User manual Viewer illumination 05-13C-LA For the
Contents
1. aoLy g 2 L SPLO 1 Electronic design explanation Power 12 Volts ac should be connected to the light attachment The circuit holds a rectifier and voltage stabilizer to 9 Volts dc Battery The 6 Volts lead acid battery 1 3 Ah Is able to provide about 6 hours of light when full charged The choice for this battery is because it does not need a difficult charging circuit the battery is one unit with solid connections easy to replace Charging The charging curve of the lead acid battery is a little slope climbing up to about 7 45 Volts In the circuit a operational amplifier is checking the battery voltage and a pre set cut off voltage P2 Around this pre set voltage a hysteresis of about 0 5 Volts is added So this pre set voltage is set to 7 Volts The charging starts at 6 75 Volts and stops at 7 25 Volts You can check the pre set voltage at TP1 The hysteresis compensated battery voltage can be checked on TP2 Both with respect to ground The charging current is limited by LM317 and R9 to about 125mA Even when the battery is short circuited defect Power for the LED backlight The relais in the circuit play s an active role for the change of battery powered or adapter powered use It prohibits the battery to be discharged by the charging circuit2. when not in use and prohibits the battery to be discharged when the slide switch is set to continuous light in mobile use and not turned off The feature of dimming the light is realized around opamp U3 A zener diode D7 provides a stable 5 1 volts reference for the driver circuit of the LED panel
3. ckli ht es Vil EP T LARS A es g bao Eres Zar Mei y e At the underside remove the four M3 bolts and remove the cover Now carefully remove the 2 small white connectors at the rear of the housing with red and black leads Pull them straight out of the socket don t tilt them it might break the socket Take the battery unit at the sides and pull it out of the housing The LED panel comes free as well Now unplug the connector on the battery and replace it on the new battery Warning Pay attention to the polarity of the battery red lead to black to Warning Take notice of the position of the small white connectors at the rear when you replace them replace the battery plug to the correct socket Adding color filters to the back light The 5000K color temperature of the LED backlight pure white is considered as base to change to light color temperatures of your choice To reduce the color temperature to about 4600K which is a warmer tint can be achieved by for example Lee filter type 443 This filter is already inserted between the front colorless plexi glass plate and the LED panel To replace the filter you need to take the battery out first See the previous chapter for directions how to do this Then the LED panel and the plexi glass plate are coming out as well Be careful with the leads to the LED panel they are vulnerable Do not bend the contact points of the LED panel they break otherwise Techn
4. de Wijs Account number 129079073 Vleugelboot 68 Swiftcode BIC RABONL2U 3991 CL Houten DE WEIJS IBAN NL78RABO0129079073 the Netherlands al Bank Rabobank Houten Street Hofspoor 1 Tel 31 0 30 6364928 Postal code 3994VZ Fax 31 0 30 6361723 a3 a City Houten e mail info dewijs 3d com Design and production of stereoscopic instruments Tax number NL 1899 16 084 B01 Website www dewijs 3d com K v K Reg N 23071201 Utrecht User manual Viewer illumination 05 13C LA modification 2012 For the Combi 3D slide viewer The content of this document is subject of change without notice November 2012 General This viewer illumination is designed to couple with the Combi 3D viewer models of 1994 2000 and 2003 Model 1997 is to narrow In 2012 the light source and the electronics have been modified The light source is now based on LED back light and operates on a lead acid gel battery as well as a mains adapter The 5000 Kelvin color white illumination will present your images with the original colors even when the lamp is dimmed Mount the viewer illumination on the Combi viewer e Put the illumination upside down on the table e At the front underside you see a small metal strip as shown in the right image lt can be pushed away inside the housing e Take a pen and push with the tip the metal strip aside at the underside in the hole e Now take the viewer and let it shift in the grooves at bo
5. ical information Type of illumination LED back light 5000K 130x60 mm 5Vdc 160 mA External and internal Voltage 12 Vac 500mA external and 9 Vdc stabilized internal Power consumption 160 mA for the lamp in total 3 5 Watts with charging plug 5 5 mm outer 2 1 mm inner Charge current of the batteries lt 125mA Illuminated area 109 x 47 5 mm Width of the coupled viewer 120 mm x 55 mm Height Expected lifespan of the lamp 30 000 hours given by the lamp factory With full batteries expected usage 6 hours depending on the type of battery and condition time Electronic schematics 1 3 Vin Vout COM 2 R8 5 1 2 as 8 Nn Pi TPI in l TP J J 1 a 7 1N4004 De Vin Vout wy ZU es 2 1 fe Ld j a ADJ 5 J a 2 S 7 nh A 3 y S TE a l DO Dil L D3 wo y R7 DSS Wa wo 1N4148 1N4148 Q1 3 1N 2 RN TP2 u2 6 1 2 2 T a IN ee 3 6 2eN jt eit 1N4004 TP LM741 BCS57B g l LM741 1 A 1N4004 Ci 1 3 i V 1K i Y D4 2 if in 1 Su L z mer eas a 2 A SN SZ 2 RFP8P05 D8 ES En LS k L m N w A fo 1N4004 R5 1 2 J 10K on a he J4 HEADER 2 P R6 m 7K R10 330R G JOQ HEADER Bes aS Ss Wei ee u oO 1 av
6. th sides of the illumination housing e lf you mount it for the first time you have to adjust the steel clamps at the left and right side to fit properly with your model of Combi viewer e When the viewer fits release the metal strip as soon as the viewer is totally dropped in its slot Normal use of the viewer illumination Pushing the red button turns on the light Releasing it turns it off When the viewer illumination is connected to the external adapter the battery is charged anytime With the connected adapter and the black slide switch is moved the lamp turns on and stays on This only applies when the external adapter is used Brightness can be adjusted by turning the knob at the rear Battery In mobile use the viewer illumination runs on a single lead acid battery of 6 Volts 1 3Ah During tests it appeared that the illumination runs for about 6 hours The LED back light uses about 160 mA at 5 Volts dc As soon as the external adapter is connected the battery is charged until a certain voltage level is reached then it stops A small red LED at the power plug indicates charging This is a low charging current so from empty to full takes about 1 day Exchanging the battery After a significant time it appears that the battery does not have enough power for good operation even when charged It has to be replaced H LED panel connector Battery connector Battery a 3 e gt gt t ba
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