空気時吸器の拡声装置の改良lこついて
Contents
1. 2 81 6 FM F M2. 2 5 2 4 1 2 3
3. 57 2 48 ON NIME
4. 3 4 8 80 40dB 50
5. 84
6. 3 SD E 1 54 RP 3280E 5cm 73 FRECUENCY COUNTER SOUNO LEVEL METER MCROPHONES CSCWLATOR AMPLPER 5 AC VOLTME
7. 8 83 7 1 500Hz 3000Hz 2
8. 10 5 SM401 W401 SW401 ee 1 gt eb SW402 NEC FR500 5P 10
9. DPM 57 15 cm 80dB 2 500Hz 1 KHz 3 KHz 16 8dB 8 4dB 8 4dB 5 4dB 22 2dB 13 8dB 2 KHz 2 5KHz 5 KHz 6KHz gt
10. dBy DECIBEL DECIBEL OUTPUT dBy 10 20 30 40 50 60 100 10mV 100mV 1 V 10V INPUT VOLTAGE 3 ET TIIIITT PA OF EE ID p 1 LIIIHI 1 II 2 MM a THU 1 ER ON _ 1 100 1K 10K FREQUENCY Hz 4 76 100dB CONDENSER MIC AIRLINE MIC DYNAMIC TYPE dBv 1V 0dB 5 DECIBEL dBy OH 4 11 LT 4 TH EL 100 1 1 KK FREQUENCY Hz 5 3 KHz 5 KHz 15dB 500Hz
11. 5 dB 2 5 KHz 9 50 40 30 20 20 dBy 30 Ce 40 DECIBEL 50 70 80 90 100 10dB 100Hz 3 5KHz FREQUENCY Hz 9 6 1 OO
12. 1 N 150g 200mW 2 5V 75mW 7 5mW 1KHz 0 5KHz 14 5 dB 3KHz 8 5dB 75mW 120mA Ni Cd DC2 5V 60 23mm 8 4 1 5 3 3 O Oo O o 4 75
13. FR 500 5P 6 dBv 4000Hz 4000 NO OE MM RN DECIBEL dBv NA TAN VA HR UA EE VN FREQUENCY Hz 6 Hz 4 7
14. 6 30cm 11 2 5V Ni Cd 4mW 76 90MHz FM 7
15. 78 ma ut i e a 1 2 EE ri 2 a 0 2 1 3 dBv 1 3
16. 12V e L9 LEDG G 26mm2 9 OMT ECF 8 r x 1 5 9 AF 1 Ss GE 1 ge Men 75Q 1 1 Le go J OHHOR CCP ST 23 12 FM 1 FM 2 3 54 8
17. 2 KHz 200Hz 1 KHz 3 KHz 500Hz 1000Hz 2000Hz 200 77 Hz 10000Hz 500Hz 5000Hz
18. 1 4 6 7 4 8 9 10 LA BS 1 gt Ei 12 1 3 6 cm 7 50 40 30 EE 20 10 ee 0 10 0 20 1 30 5 3 7 i hh 60 vw k 70 1 80 7 90 My 100 10 100 1K 10K FREQUENCY Hz 8 79
19. 1 3 WM 34 100dB 35dBy 1 8mV 1 KHz 10Q 3 65mV i We 10Hz 10KHz 4 2KHz 15cm I i Mi HHH HH L_ TI THIN OE RN NN gl 100 DECIBEL dB FREQUENCY Hz i aN 2
20. FM 12 7V F M 7 12 M 2SC 394 Li 0 82Cu 5mm 4 5 001 11 FM 82 cv SW 1 3 ER ak ae ee pil sd 1 2 ei et 6 5 5 TS 260 KG RM 4 0 KK NE 3 V 00K RV ss _ Amr Tm cg 1 TE OUT We 1 FN TUNER UNIT RE
21. HHHHHHHH HHH HHHHH The Improvements of The Face Mask Accessary of Air Breathing Apparatus The face masks of air breathing apparatus ristrect operating the hand held FM two way ra dio in smoke and poisonous gases behavior We have examined and improved the face mask accessary that enables two way radio com munication while wearing breathing apparatus In result a electret condenser type microphone has wide frequency band and high output It shows better performance in voice communication than other types microphone The best setting place of rmicrophone in acoustics is the near side of mouth on the breathing mask So we made and tested a few trial productions of the face mask accessary for practical use 1
22. TER ARECHOWC AMOER 1 2 2 418B 10 10KHz TR 5104G 1633A SC 7501 500X500X 500mm B 74 3
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