Noblitt-Sparks-Industries-Inc-147200 电路原理图.pdf

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1、VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION ARVIN Industries Model 7595, Chassis 1.47200 2NI086 TRI iXtAs L2 ? SIGNAL TEST POINT TEST FREQUENCY SERIES CAPACITY TO GENERATOR INPUT FOR 5MW OUTPUT (0.25 V ACROSS 12 OHMS) 1 455 KC 5 m* 3500a V 2 455 KC .05,*./ 200a V 3 455 KC .05,* f

2、 8a-V 4 1000 KC STANDARD LOOP 500/4 V/M O . Ui =j h J o-ffc TRANSISTOR TRI.TR2.TR3 EMITTER TRANSISTOR TR4 (BOTTOM VIEWS) RESISTANCE VALUES ARE IN OHMS; K|000 g) EXTERNAL CONNECTIONS TO PRINTED CIRCUIT CAPACITANCE VALUES LESS THAN 1.0 ARE IN MICROFARADS (a/), AND VALUES GREATER THAN 1.0 ARE |N MICRO-

3、 MICROFARADS (mm?) EXCEPT WHERE NOTED. VOLTAGE READINGS TO COMMON GROUND ARE MEASURED WITH VACUUM TUBE VOLTMETER UNDER NO SIGNAL CONDITIONS WITH TUNING CAPACITOR CLOSED AND VOLUME CONTROL AT MAXIMUM CLOCKWISE ROTATION. (0 CD O 2N448 0-2N449 IN 295 VOLUME CONTROL ALIGNMENT PROCEDURE Output meter conn

4、ected across voice coil. Generator ground to common ground. Generator modulation 30% at 400 cycles. Volume control in fully clockwise position. Position of V ariable Generator Frequency Dummy Antenna Generator Connections Trimmers Adj. in order shown for Max. Output Function of T rimme r Open 455 Kc

5、 . 05 pf CIA A1 (Top of Td) I.F. A2 (Top of T2) I.F. A3 (Top of Tl) I.F. Open 1670 Kc Test Loop A5 Oscillator 1400 Kc 1400 Kc Test Loop A6 Ante nna 600 Kc 600 Kc Test Loop Check Point Standard Hazeltine Test Loop Model 1150 or 3 turns of wire about 6 in diameter placed about one foot from the set loop. 20 收音机爱 好者资料库 RadioFans.CN