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1. A a CONSTANT VOLTAGE GPS 4303 2 2V 5 2V OUTPUT CH3 GPS 3303 5V FIX OUTPUT CH3 GPS 4251 3V 6V OUTPUT CH3 GPS 4303 8V 15V OUTPUT CH4 GPS 4251 8V 15V OUTPUT CH4 METER INSULATION POWER SOURCE ACCESSORIES Order Information Load Regulation Ripple amp Noise Line Regulation Load Regulation Ripple amp Noise Current Output lt 0 01 3mV LS 2mVrms 5Hz 1MHz lt 5mV lt 15mV lt 2mVrms 5Hz 1MHz Line Regulation Load Regulation lt 5mV lt 10mV Ripple amp Noise lt 2mVrms 5Hz 1MHz Current Output 1A Digital 3 digits 0 5 LED display GPS 4303 4251 3303 Out ON Accuracy 0 Line Regulation lt 0 01 3mV OPERATION Load Regulation lt 0 01 3mvV rating current lt 3A CH1 CH2 lt 0 02 5mV rating current gt 3A Ripple amp Noise lt 1mVrms 5Hz 1MHz Recovery Time lt 100 u S 50 Load change Minimum load 0 5A CONSTANT CURRENT Line Regulation lt 0 2 3mA OPERATION Load Regulation lt 0 2 3mA CH1 CH2 Ripple amp Noise EE 3mArms TRACKING OPERATION Tracking Error lt 0 5 10mV of the CH1 CH1 CH2 Series Regulation lt 300mV GPS 4303 1A GPS 3303 3A GPS 4251 2 5A 5 rdg 2 digits GPS 4303 3303 Out OFF Accuracy 0 5 rdg 8 digits GPS 2303 Accuracy 0 5 rdg 2 dig2. terminal of the CH1 power supply The configuration is shown as Fig 5 5 Fig 5 5 Parallel Tracking Operation 17 MULTI OUTPUT POWER SUPPLY USER MANUAL 4 CH3 Power Supply Operation The CH3 supply provides 2 2 5 2V GPS 4302 4303 and 3 6V GPS 4251 DC output with 3 amps GPS 3303 amp 4302 1 amp GPS 4303 and 2 5 amp GPS 4251 current capacity The supply is ideal for us with TTL circuits GPS 3303 5V Fixed A Turn off the power supply and the equipment to be powered during hook up B Connect the positive polarity of the device being powered to the red terminal of the CH3 supply C Connect the negative polarity of the device being powered to the black terminal of the CH3 supply D If the red OVERLOAD indicator lights means exceeding load has been placed on the supply it will cause voltage and current to drop and interfere the proper operation of the CH3 supply To correct this situation the load on the supply must be decreased so that no more than 3 amps GPS 3303 amp 4302 lamp GPS 4303 and 2 5 amps GPS 4251 of current are required 5 CH4 Power Supply Operation The CH4 supply provides an 8 15V GPS 4302 4303 4251 DC output with a 1 amps current capacity A Turn off the power supply and the equipment to be powered during hook up B Connect the positive polarity of the device being powered to the red terminal of the CH4 supply C Connect the negative polarity of the device being p
3. seesesseesoesoessossoesseeseesoeee 3 2 8 CH4 Output Specification sessesseesoesoeesoesoseseeseesoese 3 2 9 Insullation cecscscccscscsccceccscscccscccscscssecesseseeees 4 THEORY OF OPERATION cccsscccscsccccecsceceeecsesssees 4 PANEL CONTROLS AND INDICATOR ccccccseeeseeees 6 A 1 Front Panel ct sccctesescsacscaaecccecvacecedcovecsssecesacteadcetecses 8 4 2 Real Panelscicscsccscvsascccwssssevcesceecsaces casscssececsccuscseces sess 10 OPERATION INSTRUCTION csscecccsscssscececescsseseeees 11 S L Preca ti i sssr css casevie sais vase ede cede ceatesiosss taeda vesesss 11 5 2 Setting Current Limit cccscececsceccscseccscecsenees 11 5 3 Constant Voltage Constant Current Characteristic 12 5 4 Operation Mod e cscscscccscccscccscscscsccscsescscsccsees 13 MAINTENANCE caninin in A E 19 6 1 Fuse Replacement ccccecsccccscsccscsccscescscsccscscees 19 6 2 Line Voltage Conversion scscccscscscscccscscececescees 19 6 3 AGJUSIMEMUS osicdsavecsdee dass dsveseeatecss ste avesssssesveeceosdenee ss 20 6 4 Cleaning ccceccceccccscccsccccccccceceseccscsesssceseseessens 24 iti SAFETY TERMS AND SYMBOLS Please take a moment to review these safety terms and symbols which may appear in this manual or on Equipment to prevent damage to the Function Generators OPP B WARNING Warning statements identify condition or practices t
4. maximum current is set by using the CH1 CURREN control Follow the instructions for Setting current Limit select CH1 or CH2 supply independently by using the CH1 CURRENT control Note Because the supplies are being used in series either CURRENT control can be used to set maximum current If desired the CH1 CURRENT control can be rotated fully clockwise and the CH2 CURRENT control can be used to 15 MULTI OUTPUT POWER SUPPLY USER MANUAL adjust the maximum current value Because current through the two supplies must be equal when they are being used in series the lowest CURRENT control setting will set the maximum output current C Adjust the output voltage to the desired level by using the CH1 VOLTAGE controls D Turn off the power supply and the equipment to be powered during hook up E If single supply operation is desired this allows the power supply to be used as twice the voltage and rating current simply by using the negative black terminal of the CH2 supply and the positive red terminal of the CH1 supply the configuration as shown in Fig 5 3 Power Supply Fig 5 3 Single Supply F If the chassis or common of the equipment being powered is separated from both the positive and negative polarity power inputs the output of the CH2 negative supply tracking the output of the CH1 positive supply the configuration as shown in Fig 5 4 Supply Fig 5 4 Positive and Negative
5. Supply 16 MULTI OUTPUT POWER SUPPLY USER MANUAL 3 Parallel Tracking Operation In the parallel tracking mode of operation both supplies are strapped together in parallel This allows for a rating voltage supply with a double rating current capability Only the CH1 output terminals are used for parallel tracking operation In the parallel tracking mode the CH2 supply output voltage and current track the CH1 supply output voltage and current A Set the power supplies to the Tracking Parallel mode by engaging both Tracking switches B Output voltage will now be read from the CH1 VOLTAGE display Output current is exactly double the value read from the CH1 CURRENT display because each supply is providing the same amount of current C Because both voltage and current of the CH2 supply track the CH1 supply the maximum current and voltage are set by using the CH1 controls Using the CH1 supply output jacks follow the instructions for Setting Current Limit 5 2 Section Remember that the actual current output at the CH1 supply output jack is double the reading on the CH2 indicator meter D Adjust the output voltage to the desired level by using the CH1 VOLTAGE controls E Turn off the power supply and the equipment to be powered during hook up F Connect the positive polarity of the device being powered to the red terminal of the CH1 power supply G Connect the negative polarity of the device being powered to the black
6. of the CH2 supply when either parallel or series tracking operation Adjust the output voltage of the CH2 supply when in independent operation Adjust the output current of the CH2 supply Adjust the output voltage of the CH3 supply invalid for GPS 2303 amp 3303 Adjust the output voltage of the CH4 supply invalid for GPS 2303 amp 3303 Select CH1 or CH3 output voltage or current invalid for GPS 2303 amp 3303 Select CH2 or CH4 output voltage or current invalid for GPS 2303 amp 3303 MULTI OUTPUT POWER SUPPLY 14 Overload Indicator 15 CV amp CC Indicator 16 CV amp CC Indicator 17 Overload Indicator 18 Output Indicator 19 output terminal 20 output terminal 21 output terminal 22 output terminal 23 GND terminal 24 output terminal 25 output terminal 26 output terminal 27 output terminal 28 Output switches USER MANUAL Lights when CH3 output load is larger than rating value invalid for GPS 2303 The CV light green light is on when the CH1 supply is in the constant voltage operation or when both the CH1 and CH2 supplies are in the constant voltage operation in either series or parallel tracking mode The CC light red light is on when the CH1 supply is in the constant current operation The CV light green light is on when the CH2 supply is in the constant voltage operation The CC light red light is on when the CH2 s
7. OUTPUT POWER SUPPLY Q O OO amp 8 lm vp Aca zR OOMOO OOW URTERA 2 N lt Q p A Z p A Z lt DN x ml Z Q ml ea a Pa AUXILIARY AC INPUT RELAY REFERENCE RECTIFIER ge VOLTAGE amp FILTER ji SNTE RL101 10 SOURCE 01821 1824 X FORMER oe U108 C103 U101 C184 T101 ij MAIN RECTIFIER amp FILTER CURRENT OR GATE AMPLIFIER SF D1 S D187 Q183 184 Figure 3 1 Block Diagram REFERENCE VOL TAGE VOL TAGE REGULATOR AMPLIFIER Q1071 U183 R1261 Fig 4 1 Front Panel MULTI OUTPUT POWER SUPPLY USER MANUAL Fig 4 2 Real Panel MULTI OUTPUT POWER SUPPLY 4 1 Front Panel 1 Power switch 2 Meter V 3 Meter A 4 Meter V 5 Meter A 6 Voltage Control 7 Current Control 8 Voltage Control 9 Current Control 10 Voltage Control 11 Voltage Control 12 CH1 CH3 selects switch 13 CH2 CH4 selects switch USER MANUAL ON OFF the power input Indicated the CH1 or CH3 output voltage Indicates the CH1 or CH3 output current Indicates the CH2 or CH4 output voltage Indicates the CH2 or CH4 output current Adjust the output voltage of the CH1 supply and as the adjustment control for the maximum output voltage of the CH2 supply when either parallel or series tracking operation Adjust the output current of the CH1 supply and as the adjustment control for the maximum output current
8. UFACTURER GOOD WILL INSTRUMENT CO LTD No 95 11 Pao Chung Road Hsin Tien City Taipei Hsien Taiwan R O C Tel 886 2 29179188 Fax 886 2 29179189 http www goodwill com tw E mail marketing goodwill com tw U S A INSTEK CORP 1205 John Reed Court Tel 1 626 3366537 Fax 1 626 3691748 http www instek com City of Industry CA 91745 U S A MALAYSIA GOOD WILL Southeast Asia Sdn Bhd No 5 3 11 Hunza Complex Jalan Gangsa Greenlane Heights 11600 Penang Malaysia Tel 60 4 6591988 Fax 60 4 6591989 CHINA GOOD WILL Instrument Suzhou Co Ltd NO 69 Lushan Road Suzhou New District Jiangsu China Tel 86 512 66617177 Fax 86 512 66617277 PS 2303GD1BH CURRENT CURRENT CURRENT 2 3 4 Multi Independent DC Outputs e Low Noise and Excellent Regulation Versatile and Safety Design GPS 4303 GPS 4251 GPS 3303 GPS 2303 CH1 CH2 cH3 CH4 chi cH2 CH3 CH4 CH1 CH2 cH3 CH4 CH2 GPS 2303 3303 4251 14303 OUTPUT MODE Voltage 0 30V 22 5 2V 8 15vV 0 25V 3 6V 8 15V o 30v 5v Fixed 0 30V Current 0 3A 1A Max 1A Max 0 0 5A 2 5A Max 1A Max O 3A_ 3A Max 0 3A Tracking Series Voltage 0 60V VA 0 50V nee 0 60V __ _ 0 60V Tracking Parallel Current lo 6A 0 1A 0 6A i 0 6A VOLTAGE GPS 2303 3303 4251 4309 series power supply otter the choices of 2 3 and 4independent cutputs respectivelywith desible output wokage ament comb
9. V GPS 4302 4303 3 6V GPS 4251 and fixed 5V GPS 3303 on the multimeter B Set the supply VOLTAGE control to maximum fully clockwise set output off by adjusting trimmer potentiometer VR203 on the CH3 voltage indicator circuit board located on the meter or A D converter board for a reading of rate voltage on the CH3 invalid for GPS 3303 C Turn VR401 on the main master circuit board located on the right side of the supply fully counterclockwise 23 MULTI OUTPUT POWER SUPPLY MULTI OUTPUT POWER SUPPLY USER MANUAL USER MANUAL D Set output on by adjusting VR702 so that the CH3 meter also reads rating amps invalid for GPS 3303 F Slowly adjust VR602 clockwise until the output voltage read from the E Connect a variable load load must be rated to handle a power of at least multimeter drops to 5nV 6mV start current limit point 30W across the output terminals and connect the multimeter to read the G Connect a variable load across the output terminals and connect the output current then adjust the load on the multimeter to show an output multimeter to read the output current then adjust the load on the current at 3 25A for GPS 3303 amp 4302 1 20A for GPS 4303 and 2 75A multimeter to show an output current at 1 10A for GPS 4251 H Adjust VR602 until the 1 10A OVERLOAD indicator first lights F Slowly adjust VR402 clockwise until the output voltage read from the multimeter drops 5mV to 6mV start current limit point 6 4 Clea
10. age modes in response to the load change The intersection of constant voltage and constant current modes is called the crossover point Fig 5 1 shows the relationship between this crossover point and the load For example if the load is such that the power supply is operating in the constant voltage mode a regulated output voltage is provided The output voltage remains constant as the load increases up until the point where the present current limit is reached At that point the output current becomes constant and the output voltage drops in proportion to further increases in load The point is indicated by the front panel LED indicators The crossover point is reached when the CV indicator goes off and the CC indicator comes on VO MAX 10 MAX CROSSOVER Q POINT CONSTANT CURRENT RANGE t OUTPUT VOLTAGE OUTOUT CURRENT Fig 5 1 Constant Voltage Constant Current Characteristic Similarly crossover from the constant current to the constant voltage mode automatically occurs from a decrease in load A good example of this would be seen when charging a 12 volt battery Initially the open circuit voltage of the power supply may be preset for 13 8 volts A low battery will place a heavy load on the supply and it will operate in the constant current mode which may be adjusted for a 1 amp charging rate As the battery becomes charged and its voltage approaches 13 8 volts its load decreases to the point whe
11. atures extend your application range up to BINIRA ees by Senesiand 3048A by Parallel without aqquining additional power supplw units GPS 4251 Seres S040 5 4 Parallel 2571A p Low Fan Acoustic H oise P Underthe Low to bad condtion GF seies atomaticallylowerthe fan speed to eliminate annoying acoustic nose though athena control cirit Compact Reliable and Affordable Price s The compact design of GPS senes adopting SiO components and ning tanstoorer has sigrificanth reduced the see and weight of a power supply The design advancement also makes high reliability and afordable price ome together with a product i iis i SEFIES E PARALLEL GHD e o EREA E European Jack Type Terminal F h addition to the general banana teminals GP series also offer an option i of European Jack Type tenmirals which Whill the market demandsin Europe Declaration of Conformity We GOOD WILL INSTRUMENT CO LTD No 7 1 Jnongsing Rd Tucheng City Taipei County 236 Taiwan GOOD WILL INSTRUMENT SUZHOU CO LTD No 69 Lushan Road Suzhou New District Jiangsu China declares that the below mentioned products GPS 2303 3303 4303 4302 are herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States relating to Electromagnetic Compatibility 89 336 EEC 92 31 EEC 93 68 EEC and Low Voltage Equipment Directive 73 23 EEC For the evaluation re
12. circuit consisting of the main rectifier and filter a series regulator a current comparator a voltage comparator a reference voltage amplifier and a relay control circuit The circuit element consists of integrated circuit U101 U102 U103 U104 U105 U108 The circuit arrangement is shown as block diagram in Fig 3 1 The circuitry is discussed with reference to the block diagram function description Single phase input power is applied to transformer through the input circuit Auxiliary rectifier D1021 1024 provides a bias voltage filtered by capacitor C103 C104 for the preregulator U101 U108 that provides a regulator voltage for elements of action The main rectifier a full wave bridge rectifier provides the power which is filtered by capacitor C1021 and then regulated via a series regulator and delivers to the output U105 acts as a current limiter When current is over predetermined rating it is activated and decreases the current U102 provides a reference voltage for U103 U105 U103 is an inverter amplifier U104 is a comparator amplifier which compares reference voltage and feedback voltage and then delivers to Q103 Q104 which then calibrates the output voltage Q113 is activated when the unit is overload It controls Q103 current magnitude which limits the output current The relay control circuit provides limited power dissipation in series regulator USER MANUAL MULTI OUTPUT POWER SUPPLY USER MANUAL MULTI
13. e CH1 SUPPLY Also in this mode of operation the positive terminal Red of the CH2 supply is connected to the negative terminal Black of the CH1 supply to allow the two supplies to be used as a 0 to double rating voltage supply When both switches are engaged in the unit is in the Tracking Parallel mode the CH1 and CH2 supplies are wired together in parallel and both the maximum current and voltage are set using the CH1 controls The CH1 and CH2 output can be used as two individual but tracking power supplies or just the CH1 output can be used as a O to rating voltage supply with a O to double rating current capability 4 2 Real Panel 31 Fuse holder 32 Power socket 33 AC selects switch Selects to permit operation from 100 120 220 or 230VAC amp 34 HI LO switch 35 Cooling Fan 50 60Hz line voltage by using 34 HI LO switch HI position selects high voltage range 120 230V AC inputs LO position selects low voltage range 100 220V AC inputs Ventilates the hot air out to prevent output stage from thermo shock and improves the temperature coefficient 11 MULTI OUTPUT POWER SUPPLY USER MANUAL 5 OPERATION INSTRUCTION 5 1 Precaution 1 AC input AC input should be within the range of line voltage 10 230V 10 6 50 60Hz protective grounding conductor must be connected to ground WARNING To avoid electrical shock the power cord cordon secteur doit imp rat
14. e output terminals and connect the multimeter to read the output current then adjust the load on the multimeter to show an output current at 1 20A 24 25 MULTI OUTPUT POWER SUPPLY USER MANUAL Fig 6 1 Adjustment Location
15. garding the Electromagnetic Compatibility and Low Voltage Equipment Directive the following standards were applied EMC EN 61326 1 Electrical equipment for measurement control and laboratory use _ EMC requirements 1997 A1 1998 Conducted and Radiated Emissions Electrostatic Discharge MULTI OUTPUT POWER SUPPLY USER MANUAL Declaration of Conformity We GOOD WILL INSTRUMENT CO LTD No 7 1 Jnongsing Rd Tucheng City Taipei County 236 Taiwan GOOD WILL INSTRUMENT SUZHOU CO LTD No 69 Lushan Road Suzhou New District Jiangsu China declares that the below mentioned products GPS 4251 GPQ 2505D are herewith confirmed to comply with the requirements set out in the Council Directive on the Approximation of the Law of Member States relating to Electromagnetic Compatibility 89 336 EEC 92 31 EEC 93 68 EEC and Low Voltage Equipment Directive 73 23 EEC For the evaluation regarding the Electromagnetic Compatibility and Low Voltage Equipment Directive the following standards were applied EMC EN 55011 1998 EN 61000 4 2 1995 A 1 1998 Current Harmonic EN 61000 3 2 1995 A1 1998 A2 1998 A14 2000 Radiated Immunity EN 61000 4 3 1996 A1 1998 EN 61326 1 Electrical equipment for measurement control and laboratory use _ EMC requirements 1997 A1 1998 Conducted and Radiated Emissions EN 55011 1991 A1 1997 A2 1998 Electrostatic Discharge EN 61000 4 2 1995 Vol
16. ght tracking switch B Set the CH2 CURRENT control to midrange and set the CH1 supply voltage controls to minimum fully counterclockwise C Connect the multimeter to the CH1 SUPPLY outputs and measure the voltage D Disconnect the multimeter from the CH1 supply outputs and connect it across the CH2 supply outputs E Adjust trimmer potentiometer VR306 on the circuit board located on the right side of the supply to obtain the exact same reading for the CH2 supply output as was preset at the CH1 supply output e g if the minimum CH1 supply output voltage is 10 00mV adjust VR306 to obtain an output voltage as close to 10 00mV at the CH2 supply as possible F Set the CH2 CURRENT control to midrange and set the CH1 supply voltage controls to maximum fully clockwise G Connect the multimeter to the CH1 supply outputs and measure the voltage H Disconnect the multimeter from the CH1 supply outputs and connect it across the CH2 supply outputs Set output on by adjusting VR501 located at the left of the lower front panel circuit board VOLTAGE CURRENT CONTROL potentiometer board until the voltage read from the multimeter is the same as it was across the CH1 output terminals Return the multimeter to the CH1 output terminals and verify that the output voltage is identical If not repeat this step Set output off by adjusting VR804 located at the left of the lower front panel circuit board VOLTAGE CURRENT CONTROL potentio
17. hat could result in injury or loss of life CAUTION Caution statements identify conditions or practices that could result in damage to this product or other property DANGER High Voltage ATTENTION refer to Manual Protective Conductor Terminal ground Earth Terminal Frame or Chassis Terminal iv FOR UNITED KINGDOM ONLY NOTE This lead appliance must only be wired by competent persons WARNING THIS APPLIANCE MUST BE EARTHED IMPORTANT The wires in this lead are coloured in accordance with the following code Green Yellow Earth Blue Neutral Brown Live Phase As the colours of the wires in main leads may not correspond with the colours marking identified in your plug appliance proceed as follows The wire which is coloured Green amp Yellow must be connected to the Earth terminal marked with the letter E or by the earth symbol D or coloured Green or Green amp Yellow The wire which is coloured Blue must be connected to the terminal which is mark with the letter N or coloured Blue or Black The wire which is coloured Brown must be connected to the terminal mark with the letter L or P or coloured Brown or Red If in doubt consult the instructions provided with the equipment or contact the supplier This cable appliance should be protected by a suitably rated and approved HBC mains fuse refer to the rating information on the equipment and or user instructions for details As a guide cable of 0 75mm sh
18. he left supply adjust the magnitudes of both the positive and negative output voltages Because the outputs are connected in a tracking configuration any internal disturbance in the master supply such as drift or ripple will cause an equal percentage change in the outputs of both the supplies Each power supply except CH3 for GPS 3303 and CH4 for GPS 4302 amp 4303 amp 4251 is a completely transistorized well regulated constant voltage constant current supply that will provide full rated output voltage at the maximum output current or can be continuously adjusted throughout the output range The front panel current controls can be used to establish the output current limit overload or short circuit when the supply is used as a constant voltage source independent or tracking modes and the voltage controls can be used to establish the voltage limit ceiling when the supply is used as a constant current source independent mode only The supply will automatically cross over from constant voltage to constant current operation current limited operation in the tracking mode Each power supply CH1 CH4 has its own front panel meter that can measure output voltage or current One power supply may be used as a CH1 supply controlling one CH2 supplies furnishing various voltage or current for a system When operate with the front panel mode switch in the tracking position the instrument is automatically internally connected in auto tracking configurat
19. he negative black terminal of the CH1 supply In the series tracking mode the maximum output voltage of both CH1 and CH2 supplies can be simultaneously varied with one control The maximum CH2 supply voltage is automatically set to the same as the CH1 supply by using the CH1 VOLTAGE controls A Set the power supplies to the Tracking series mode by engaging the left Tracking switch and release the right Tracking switch WARNING Voltage more than 60V DC has a lethal shock hazard to the user Be careful when connecting power supplies in series to achieve voltages higher than 60V DC total or 60V DC between any connection and earth ground Note Simultaneously metering of both current and voltage can be obtained in the mode of operation setting one of the displays for current metering and one for voltage metering In this case the output voltage across the two supplies is actually double the displayed value For example if the CH1 display is set for voltage metering and the CH2 display for current metering the output voltage across the CH1 positive red terminal and the CH2 negative black terminal would be double the reading on the CH1 LED Display since both supplies are putting out the same voltage The actual output current would be the value read from the CH2 LED Display since the two supplies are wired in series current flowing through each supply must be equal B Set the CH2 CURRENT control to the full clockwise position The
20. ination 0 01 highhy regulated power outputs and considerate atty design Two main outputs of SOG Allow the extended applications of BOWS and SOWA under senes and parallel modes of GPS2303 5003 4305 GPS 4251 outputs 2040 5A Seres S040 54 Parallel 354 The additional power opts ot GPS3303 45 W303 meets the increasing market demand of multiple power sources An output O MOF F switch prevents the load dewoes trom accidental damage dunng setting adustment To avoid fan acoustic noise inthe bb GPSsenes hawe been designed with tan speed contd ature to minimize the fan noise annoyance The combination of accuracy fesiblityand sa ety makes GPS Senes an all in one solution in a broad application range of P amp D Education Lab tianutactunng Service Component Test and System Power kode FEATURES e Multiple Power Outputs 2 3 and 4 independent isolated outputs with four 3 digit LED displays e Stable and Clean Power 001 load and line regulation and low nipple and noise Flexible Output Voltage and Current Tracking operation and auto Senes Parallel extend application range to GOW And S0MEAGPS 4251 Sernes 50 40 5 4 Parallel 251A Safety Design Quiput OMF F swich COA modes Overload Protection and Reverse Polanty Protection e Low Fan Acoustic Noise Fan speed control circuit to minimize Fan Moise APPEARANCE GP 4303 4241 4 Outputs Optional Europan Jack Type Terralnal tor All Waat Mu
21. ion For audio production line the continuous or dynamic load can be internally selected When the connector J111 amp J309 is connected to ON position the unit is suitable for audio power Amplifier application Normal setting to OFF position MULTI OUTPUT POWER SUPPLY USER MANUAL 2 SPECIFICATIONS 2 1 General Main Supply switch selectable Operation Environment Storage Temperature amp Humidity 100V 120V 220V 10 230V 10 6 50 60Hz Indoor use Altitude up to 2000m Ambient temperature 0 C to 40 C Relative humidity 80 maximum Installation category II Pollution degree 2 10 C to 70 C 70 maximum Accessories Operation Manual X Table 2 1 REPLACED FUSE TYPE RATES INPUT TEST LEAD MODEL n i Current 4AS Independent Series Para 100V 120V 220V 230V WATTS VA lt 3A Curent lt 10A 0 30VX 60V 30V T6A GPS 2303 0 3AX 3A 6A 250V T3A 250V 350 450 0 2 0 30VX 60V 30V T6 3A GPS 3303 0 3A 3A 6A 250V T3 15A 250V 420 550 1 2 0 30VX 60V 30V T6 3A GPS 4303 0 3A 3a 6A 250V T3 15A 250V 420 550 2 2 0 30VX 60V 30V T5A GPS 4302 0 24 2A 4A 250V T3A 250V 320 420 2 2 0 25VX SOV 25V T2 5A GPS 4251 0 0 5AX 105A liA 250V T1 25A 250V 150 185 4 0 Dimensions gt 255 W X145 H 265 D m m Weight kg 7 0 kg 2 2 Operation Mode 1 Independent 2 Series 3 Parallel 2 3 Constant Voltage Operation 1 Output
22. its g Chassis and Terminal gt DC 500V 20MQ Chassis and AC Cord gt DC 500V 30MQ AC 100V 120V 220V 10 230V 10 6 50 60Hz Power cord x 1 Instruction manual x 1 GPS 4303 Test lead GTL 104 x 2 GTL 105 x 2 or GTL 203 x 2 GTL 204 x 2 GPS 4251 Test lead GTL 105 x 4 or GTL 203 x 4 GPS 3303 Test lead GTL 104 x 2 GTL 105 x 1 or GTL 203 x 1 GTL 204 x 2 GPS 2303 Test lead GTL 104 x 2 or GTL 204 x 2 DIMENSIONS amp WEIGHT 255 W x 145 H x 265 D mm Approx 7 kg GPS 4303 3303 2303 Approx 6 3kg GPS 4251 Specifications subject to change without notice GPS 4303 4 channels 0 30V x 2 O 3A x 2 Power Supply GPS 4251 4 channels 0 25V x 2 0 0 5A x 2 Power Supply GPS 3303 3 channels 0 30V x 2 0 3A x 2 Power Supply GPS 2303 2 channels 0 30V x 2 O 3A x 2 Power Supply Standard Accessories GPS 4303 01 Including GTL 104 x 2 amp GTL 105 x 2 Type of Test Lead Set GPS 4303 02 Including GTL 203 x 2 amp GTL 204 x 2 GPS 4251 03 Including GTL 105 x 4 GPS 4251 04 Including GTL 203 x 4 GPS 3303 05 Including GTL 104 x 2 amp GTL 105 x 2 GPS 3303 06 Including GTL 203 x 2 amp GTL 204 x 2 GPS 2303 07 Including GTL 104 x 2 GPS 2303 08 Including GTL 203 x 2 Instruction manual x 1 Power cord x 1 Test Lead GTL 104 Test Lead GTL 105 Test Lead GTL 203 Test Lead GTL 204 Current 4A 10A Current 3A Current 3A Current 4A 10A ISO 9001 amp ISO 14001 CERTIFIED MAN
23. ivement tre reli la terre 2 Installation Avoid using the supply in a place where ambient temperature exceeds 40 C The heat sink located at the rear of the supply must have sufficient air space for radiation CAUTION To avoid damaging the power supply don t use it in a place where ambient temperature exceeds 40 C 3 Output voltage overshoot Voltage between output terminals never exceeds the preset value when the power is turned on or off 5 2 Setting Current Limit 1 Determine the maximum safe current for the device to be powered 2 Temporarily short the and terminals of the power supply together with a test lead 3 Rotate the VOLTAGE control away from zero sufficiently for the CC indicator to light 4 Set the meter selection switch to A position to select the current metering mode 5 Adjust the CURRENT control for the desired current limit Read the current value on the Ammeter 6 The current limit overload protection has now been preset Do not change the CURRENT control setting after this step 7 Remove the short between the and terminals and hook up for constant voltage operation MULTI OUTPUT POWER SUPPLY USER MANUAL 5 3 Constant Voltage Constant Current Characteristics The working characteristic of these series Power Supplies is called a constant voltage constant current automatic crossover type This permits continuous transition from constant current to constant volt
24. ltir Output High Quality Power Supply With Affordable Price GPS 2303 3303 4251 4303 GPS 2303 2 Outputs GPS 3303 3 Outputs GPS 4251 4 Outputs GPS 4303 4 Outputs Suffix code definition GPS X XXX EN urent Dtp ut wo tage rannel Safety Design The output load is protected tom acidertal damage duning output setting adjustment The power output coud be switched offfor seting change and Switched on once the setting is done The polarity protection is also available to avoid the damage ofmiconnecion Stable and Clean Output wil 0 01 Line Load regulation keeps power output stead yin spite of power line ductuation and load effect The dean power with low nipple and noise ensures your jobs done without any suspicion of power soume purity Front Pane Display Pe ee ee Tuo outputs of woltageQurrent dsplayoould be monitored on the font panel simuftanesusty CH1 ACH or CHS CH4 of power output wolttage Curent could be sdeged for dsplay by a font pane switch 4 4 4 k C lt U5 ew n SS RURAERT WOLT AGE A el a w Hieper Wiled a E a 3 i ii i So zi ay ee i T i SLAM 7 gt N E E UEYN ta N rat ES amma o lt a 4 7 OJJ Seeders Jo i 101i Os i a its i Frama 1 ith the choices ofmultiple output models GPS senes provide you a flee Solution to meet your job requirement within budget limit n addition the tracking Ee E and the auto SeriesPardld fe
25. meter board until the voltage read from the multimeter is the same as it was 22 MULTI OUTPUT POWER SUPPLY USER MANUAL across the CH1 output terminals Return the multimeter to the CH1 output terminals and verify that the output voltage is identical If not repeat this step invalid for GPS 2303 3 Parallel Tracking Adjustment A Disengage both Tracking mode switches both switches out so that the power supply is in the independent operating mode B Set the CH1 supply VOLTAGE and CURRENT controls to minimum fully counterclockwise C Connect the multimeter across the CH1 supply output terminals and measure the output current D Set the CH1 supply VOLTAGE control to midrange and adjust the CURRENT control to obtain an output current of rating amps read on the multimeter Do not change the CURRENT control setting after this step E Engaged both Tracking mode switches both switches in so that the power supply is in the parallel operating mode F Set the CH2 supply CURRENT control to maximum fully clockwise and set the VOLTAGE control to midrange G Set output on by adjusting the trimmer potentiometer VR502 on the circuit board located on the right side of the supply to obtain an output current of double rating amps on the multimeter 4 CH3 Supply Adjustment A Connect the multimeter across the output terminals of the CH3 supply to read output voltage and adjust the VR403 to obtain reading of 2 2 5 2
26. minal The more the temperature of the heat sink rises the more the rolling speed of the fan gets fast The fastest rolling speed is when the temperature reaches to 70 C 2 To avoid damaging the power supply if the fan fails to work when the temperature reached to the appropriate value turn off the instrument and check the cause 19 MULTI OUTPUT POWER SUPPLY USER MANUAL 6 MAINTENANCE WARNING The following instructions are for use by qualified personnel only To avoid electrical shock do no perform any servicing other than the operation instruction of the manual unless you are qualified to do so 6 1 Fuse Replacement 6 N If the fuse blows the CV or CC indicators will not light and the power supply will not operate The fuse should not normally open unless a problem has developed in the unit Try to determine and correct the cause of the blown fuse then replace only with a fuse of the correct rating and type The fuse is located on the rear panel see Fig 4 2 amp Table 2 1 WARNING For continued fire protection replace fuse only with 250V fuse of the specified type and rating and disconnect power cord before replacing fuse Line Voltage Conversion The primary winding of the power transformer is tapped to permit operation from 100 120 220 or 230VAC 50 60Hz line voltage Conversion from one line voltage to another is done by change AC selects switch as shown in Fig 4 2 The rear panel iden
27. ning G Connect a variable load across the output terminals and connect the To clean the power supply use a soft cloth dampened in a solution of mild multimeter to read the output current then adjust the load on the detergent and water Do not spray cleaner directly onto the instrument since it multimeter to show an output current at 3 15A for GPS 3303 amp 4302 may leak into the cabinet and cause damage Do not use chemicals containing 1 10A for GPS 4303 and 2 65A for GPS 4251 benzine benzene toluene xylene acetone or similar solvents Do not use H Adjust VR402 until the 3A GPS 3303 amp 4302 2 5A GPS 4251 and 1A abrasive cleaners on any portion of the instrument GPS 4303 OVERLOAD indicator light 5 CH4 Supply Adjustment A Connect the multimeter across the output terminals of the CH4 SUPPLY to read output voltage and adjust VR603 to obtain a reading of 8 15V GPS 4302 4303 4251 on the multimeter B Set the supply VOLTAGE control to maximum fully clockwise set output off by adjusting the trimmer potentiometer VR803 from the CH4 voltage indicator circuit board located on the meter or A D converter board for a reading of rate voltage on the CH4 C Turn VR601 on the main master circuit board located on the right side of the supply fully counterclockwise D Set output on by adjusting VR902 so that the CH4 meter also reads rating amps E Connect a variable load load must be rated to handle a power of at least 30W across th
28. ould be protected by a 3A or 5A fuse Larger conductors would normally require 13A types depending on the connection method used Any moulded mains connector that requires removal replacement must be destroyed by removal of any fuse amp fuse carrier and disposed of immediately as a plug with bared wires is hazardous if an engaged in live socket Any re wiring must be carried out in accordance with the information detailed on this label MULTI OUTPUT POWER SUPPLY USER MANUAL 1 INTRODUCTION The regulated DC power supply series is designed to be used in applications such as powering operational amplifier push pull stages logic circuit and definition systems where plus and minus voltages are required to track with an insignificant error To represent an operation convenience GPS 4302 GPS 4303 and GPS 4251 have four independent power supplies while GPS 2303 has two and GPS 3303 has three housed in a single package GPS 4302 GPS 4303 and GPS 4251 consist of four identical independent adjustable DC power supplies while two for GPS 2303 and three for GPS 3303 A front panel switch selects one of three operation modes of independent series and parallel In the independent mode the output voltage and current of each supply are controlled separately and each supply is isolated up to 300V from output to chassis or output to output In the tracking mode both outputs are automatically connected in series or parallel and the controls of t
29. owered to the black terminal of the CH4 supply D If the red OVERLOAD indicator lights exceeding load has been placed on the supply it will cause voltage and current to drop and interfere proper operation of the CH4 supply Under this situation the load on the supply must be decreased so that no more than amp of current is required 18 MULTI OUTPUT POWER SUPPLY USER MANUAL 6 Dynamic Load Operation amp Application A When select to dynamic load position the max peak current is at 1 7 times rating current The features are only applied for audio circuit of amplifier and audio production lines Change the position of wafer J111 of CH1 and J309 of CH2 from OFF to ON Please refer to Fig 6 1 Adjustment Location B For other application and testing Safety or CE etc must set the wafer at OFF position 7 Output ON OFF Action The output ON OFF action is controlled with a single control the output switch is pushed on a high single output is on and output LED is on while the output switch is pushed off or tracking switch is pressed output will disable CAUTION The output terminals are for use only with the equipment N which has no accessible live parts The output terminals should not be connected to any hazardous live parts 8 Fan Control 1 The fan of the power supply will not work upon power on until the temperature of the heat sink rises up to 32 C45 C after adding load to output ter
30. re it no longer demands the full 1 amp charging rate This is the crossover point where the power supply goes into the constant voltage mode 13 MULTI OUTPUT POWER SUPPLY MULTI OUTPUT POWER SUPPLY USER MANUAL USER MANUAL 5 4 Operation Mode 2 Series Tracking Operation 1 Independent Operation When the series tracking mode of operation is selected the position Red The CH1 and CH2 supplies each provide a 0 to rating volts output at up to rating amps This procedure covers the use of the CH1 and CH2 supplies only when they are used independently from each other When used in the independent operating mode the operation controls of the two power supplies are completely independent and either supply can be used individually or both can be used simultaneously A Disengage both Tracking mode switches both switches out so that the power supply is in the independent operating mode B Adjust Voltage control and Current control to the desired output voltage and current C Turn off the power supply and the equipment to be powered during hook up D Connect the positive polarity of the device being powered to the red terminal of the power supply E Connect the negative polarity of the device being powered to the black terminal of the power supply F Fig 5 2 illustrates the connection procedure Fig 5 2 Independent Operation 14 terminal of the CH2 supply output is internally connected to t
31. supply Fig 5 3 2 6 Meter A Display A Display V B Accuracy C Voltmeter D Ammeter 2 7 CH3 Output Specifications 1 Regulation 2 Ripple amp Noise 3 Outout Voltage range 4 Output current 2 8 CH4 Output Specifications 1 Regulation 2 Ripple amp Noise 3 Outout Voltage range 3 digits panel meterx2 0 5 Red LED display 3 digits panel meter x 2 0 5 Green LED display OUT ON 0 5 of rdg 2 digits OUT OFF 0 5 of rdg 8 digits When the output of the GPS 2303 is set to OFF its voltage meter and current meter can not preview 99 9V of full scale 9 99A of full scale Line regulations 5mV load regulations 15mV S2mVrms GPS 4302 4303 2 2 5 2V 48 continuous adjustment GPS 3303 fixed 5V48 continuous adjustment GPS 4251 3 6V 38 continuous adjustment 3A for GPS 3303 amp 4302 1A for GPS 4303 2 5A for GPS 4251 Line regulations 5mV load regulations 10mV iS 2mVrms GPS 4302 4303 4251 8 15V48 continuous adjustment MULTI OUTPUT POWER SUPPLY 4 Output current USER MANUAL 1A MULTI OUTPUT POWER SUPPLY USER MANUAL 2 9 Insulation Between chassis and output terminal 20MQ_ or above DC 500V Between chassis and AC cord 30MQ_ or above DC 500V 3 THEORY OF OPERATION The power supply consists of an AC input circuit and transformer a bias supply consisting of an rectifier filter pre regulator and reference voltage source a main regulator
32. tage Fluctuation EN 61000 3 3 1995 Electrical Fast Transients EN 61000 4 4 1995 Surge Immunity EN 61000 4 5 1995 Current Harmonic EN 61000 3 2 1995 A1 1998 A2 1998 A14 2000 Radiated Immunity EN 61000 4 3 1996 A 1 1998 Conducted Susceptibility EN 61000 4 6 1996 Voltage Fluctuation EN 61000 3 3 1995 Electrical Fast Transients EN 61000 4 4 1995 Voltage Dips Interrupts EN 61000 4 11 1994 Low Voltage Equipment Directive 73 23 EEC amp amended by 93 68 EEC Surge Immunity EN 61000 4 5 1995 Conducted Susceptibility EN 61000 4 6 1996 EN 61010 1 2001 TEC 61010 1 2001 Safety Voltage Dips Interrupts EN 61000 4 11 1994 Low Voltage Equipment Directive 73 23 EEC amp amended by 93 68 EEC EN 61010 1 1993 A2 1995 TEC 1010 1 1990 A2 1995 SECTION PAGE 1 2 INTRODUCTION biesssiicacesuias since tucaecs cesvsacesastaseiecesassesesstes 1 SPECIFICATIONG cscsccscsccccccscscecsccscscscssccessesssees 2 2 1 Gener all isis ver scevesegscn cece oad isu ctise ab seee case isisisi csaedes 2 2 2 Operation MOde cscscccccscccscccscscsceccscscssscseecees 2 2 3 Constant Voltage Operation scsccceecsceecscecceoees 2 2 4 Constant Current Operation c ccccccsceccececcscescsces 3 2 5 Tracking Mode ccceccccccssscscscccscsceccccscsessceecees 3 2 60 MEER E E E E 3 2 7 CH3 Output Specification
33. ter as possible E Set output on by adjusting the trimmer potentiometer VR801 CH2 VR201 CH1 from the CH1 CH2 voltage indicator circuit board located on the meter or A D converter board for a reading of rate voltage Xl 05 on the CH1 CH2 F Set output off by adjusting trimmer potentiometer VR802 CH2 VR202 CH1 from the CH1 CH2 voltage indicator circuit board located on the meter or A D converter board for a reading of rate voltage on the CH1 CH2 invalid for GPS 2303 G Connect the external multimeter across the CH1 CH2 SUPPLY output terminals to read the output current so that the meter causes a short circuit across the terminals and adjust the CH1 CH2 CURRENT control so that rating amps is read on the multimeter H Set output on by adjusting the trimmer potentiometer VR901 CH2 VR701 CH1 so that the CH1 CH2 meter also reads rating amps I Rotate the CH1 CH2 current control fully clockwise maximum J Adjust VR103 on the CH1 VR303 CH2 supply circuit board located on the right side of the supply to obtain an output current of rating amps x1 05 read on the meter or LED display 21 MULTI OUTPUT POWER SUPPLY USER MANUAL K Set output off by adjusting the trimmer potentiometer VR903 CH2 VR703 CH1 so that the CH1 CH2 meter also reads rating amps invalid for GPS 2303 2 Series Tracking Adjustment A Set the supply to Tracking series mode by engaging the left Tracking switch and releasing the ri
34. tifies the line voltage to which the unit was factory set To convert to a different line voltage perform the following procedure 1 Make sure the power cord is unplugged 2 Change the AC selects switch to the desired line voltage position 3 A change in line voltage may also require a corresponding change of fuse value Install the correct fuse value as listed on rear panel MULTI OUTPUT POWER SUPPLY USER MANUAL 6 3 Adjustments This unit was accurately adjusted at the factory before shipment Readjustment is recommended only if repairs have been made in a circuit affecting adjustment accuracy or if you have a reason to believe the unit is out of adjustment The recommended calibration device is a multimeter with an accuracy of 0 1 DCV or better GOOD WILL model GDM 8145 or equivalent If readjustment is required use the following procedure The location of the adjustments is shown in Fig 6 1 1 Independent Adjustment A Disengage both Tracking mode switches both switches out so that the power supply is in the independent operating mode B Connect a 4 1 2 digital multimeter with an accuracy of 9 1 DCV to measure the DC voltage at the output terminals of the CH1 CH2 supply C Set the CH1 CH2 VOLTAGE control to maximum fully clockwise D Adjust trimmer potentiometer VR101 CH1 VR301 CH2 on the circuit board located on the right side of the supply for a reading as close to rating voltage 1 05 on the multime
35. upply is in the constant current operation or in parallel tracking mode Lights when CH4 output load is larger than rating value invalid for GPS 2303 amp 3303 Switch the light on Positive polarity output terminal for the CH3 supply invalid for GPS 2303 Negative polarity output terminal for the CH3 supply invalid for GPS 2303 Positive polarity output terminal for the CH1 supply Negative polarity output terminal for the CH1 supply Earth and chassis ground Positive polarity output terminal for the CH2 supply Negative polarity output terminal for the CH2 supply Positive polarity output terminal for the CH4 supply invalid for GPS 2303 amp 3303 Negative polarity output terminal for the CH4 supply invalid for GPS 2303 amp 3303 ON OFF the output 10 MULTI OUTPUT POWER SUPPLY 29 TRACKING amp Mode Switch 30 USER MANUAL Two push button switches that select Independent mode series tracking mode or parallel tracking mode as follows a When both switches are disengaged out the unit is in the Independent mode and the CH1 and CH2 power supplies are completely independent from each other When the left switch is engaged in and the right switch is disengaged out the unit is in the Tracking series mode maximum voltage of both supplies is set using the CH1 VOLTAGE controls voltage at output terminals of the CH2 supply tracks the voltage at the output terminals of th
36. voltage range 2 Regulation Two independent outputs and CH3 2 2 5 2V output for GPS 4302 4303 3 6V output for GPS 4251 Fixed 5V for GPS 3303 CH4 8 15V output for GPS 4302 4303 4251 Output from 0 to rating volts and 0 to rating amperes Output from 0 to rating volts at rating amperes each Output from 0 to double rating volts at rating amperes Output from O to double rating amperes at rating volts 0 to rating voltage continuously adjustable Line regulations 0 01 3mV Load regulation 0 01 3mV rating currentS 3A Load regulation 0 02 5mvV rating current gt 3A MULTI OUTPUT POWER SUPPLY USER MANUAL 3 Recovery time 4 Ripple amp Noise 5 Temperature coefficient 2 4 Constant Current Operation 1 Output current range 2 Regulation 3 Ripple current 2 5 Tracing Operation 1 Parallel Operation Regulation 2 Series Operation Regulation lt 100u s 50 load change minimum load 0 5A lmVrms 5Hz 1MHz S 300ppm C 0 to rating current continuously adjustable Line regulations 0 2 3mA Load regulations 0 2 3mA iS 3mArms Line regulations 0 01 3mV Load regulation 0 01 3mV rating currentS 3A lt 0 02 5mV rating current gt 3A Line regulations 0 01 5mV Load regulation 300mV A Positive and Negative supply Fig 5 4 CH2 tracking error 0 5 10mV of the CH1 No load with load add load regulationS 300mV B Single
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