Hoffman-Radio-Corp-204 电路原理图.pdf

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1、TAN UAL OF 1951 MOST-OFTEN-NEEDED RADIO DIAGRAMS PARTS LIST Hoffman SERVICE DATA All values of capacity are microfarads unless otherwise noied. All resistors are 1/2 watt composition type with values given in ohms unless other RADIO CHASSIS 165 MODELS 204,205 NOTES: The pin voltage readings are obta

2、ined with no signal input to receiver. D.C. voltages measured with 20,000 ohm/volt meter. A.C. voltages measured with 1,000 ohm/volt meter. All voltages measured with reference to B-. Live voltage 115V A.C. Toler- Symbol Part No, Value ance C11 4401 / 0 - 388 mmf C2 J l 0 - 180 mmf C3 C4 j Part of 2

3、 Gang Variable C5 J Not used C6 4000 100 mmf 20%, C7 4102 .005 C8 4100 .05 C9 4001 270 mmf 20% CIO 4102 .005 Cll 4100 .05 02 4001 270 mmf 20% 03 4102 .005 04 .4106 .02 05 4100 .05 06 4101 .05 07 50 08 4201 30 09 4121 .1 20% R1 4501 22K 20% F2 Not used R3 Not used F4 4502 2.2 meg 20% R5 4504 47K 20% R6 4505 10 meg 20% F7 4836 500K R8 4511 100K 20% F9 4500 220K 20% RIO 4506 470K 20% Rll 4510 150 20% R12 4508 47 20% R13 4700 500 10% R14 4506 470K 20% 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN