Emerson-Radio-and-Phonograph-Corp-CV289 电路原理图.pdf

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1、MANUAL OF 1940 MOST POPULAR SERVICE DIAGRAMS Emerson Radio ITEM Part No, T1 6MW-171B T1 6VW-188A T4 7BT-486A T2 7BT-488C T3 7BT-489A or 7FT-513D R1 2CR-193 R2 KR-53 R3 3FR-293 R4 NNR-220 R5 6VR-364 R6, R15 4XR-327 R7, R8, 1 Rll, R18 j KR-56 R9, R10 KR-57 R12 6VR-366 R13 6RR-375 R14 4XR-334 R19 LR-60

2、 R16, R20 LR-61 R17 KR-54 Cl, C2 6RC-436 C3, C16 3HC-274 C4, C15, C26 4XC-394A fC5, Cll fC6, C7, C8, C9 CIO, C13, C23 BC-12 C12 3CC-302 C14 LC-64 C17 6JC-425 C18 4XC-404 C19 LC-65 C20, C21 6JC-426B C22 3LC-297A C24 IC-47A C25 KC-59 C27 CCC-127 C28 NC-70A 6JS-368U 6JS-386 DESCRIPTION Loop antenna ass

3、embly (for CV-289, CV-291 and CV1-291) (see prod. ch. No. 4) Loop antenna assembly (for CV-290 and CV1-290) (see production change No. 4) Oscillator coil (see production change No. 2). . Double-tuned 455 kc first i-f transformer . Double-tuned 455 kc second i-f transformer. Double-tuned 455 kc secon

4、d i-f transformer 30,000 ohm Vz watt carbon resistor. 50,000 ohm 4 watt carbon resistor. 140 ohm Vz watt wire-wound resistor. 3 megohm J4 watt carbon resistor. . Volume control .5 megohm with line switch. 15 megohm J4 watt carbon resistor. 500,000 ohm (4 watt carbon resistor 1 megohm J4 watt carbon

5、resistor Tone control, 75,000 ohm, with motor line switch. 170 ohm 1 watt wire-wound resistor. . 2,500 ohm 1 watt carbon resistor. 20,000 ohm (4 watt carbon resistor . 200,000 ohm (4 watt carbon resistor. . 100,000 ohm 14 watt carbon resistor. Two-gang variable condenser. 0.002 mf, 600 volt tubular

6、condenser. 0.00022 mf mica condenser. Trimmers, part of variable condenser. Trimmers, part of i-f transformers. 0.05 mf, 200 volt tubular condenser. 0.15 mf, 200 volt tubular condenser. 0.05 mf, 400 volt tubular condenser. 0.024 mf. 400 volt tubular condenser. 20 mf, 150 volt dry electrolytic conden

7、ser. 0.02 mf, 400 volt tubular condenser . Dual 20 mf, 150 volt dry electrolytic condenser. 0.01 mf, 400 volt tubular condenser (used only with a.c.-d.c. motors) 0.0005 mf mica condenser. 0.006 mf, 400 volt tubular condenser (see production change No. b) 0.01 mf, 200 volt tubular condenser. . . 0.0002 mf mica condenser . .- . 4 dynamic speaker (not used on CV-291 or CV1-191). 6Y2 permanent magnet dynamic speaker COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN