Noblitt-Sparks-Industries-Inc-9574 电路原理图.pdf

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1、VOLUME K-18, MOST-OFTEN-NEEDED 1958 RADIO SERVICING INFORMATION ARVIN INDUSTRIES RADIO MODEL 9574, CHASSIS 1.43000 SIGNAL TEST PONT TEST FREOUENCY SERIES CARACIT0R TO GENERATOR INPUT FOR .05 WATT OUTPUT (0.4V ACROSS VC) O 45S KC .03 UF lOOOUV 49SKC .03 U F JS UV 435 KC .03 UF 3 UV 000 KC STANDARD LO

2、OP |2S UV / M RESISTANCE VALUES ARE IN OHMS ; K IOOO CAPACITANCE VALUES LESS THAN 1.0 ARE IN MICROFARADS (aoI.AND VALUES GREATER THAN 1.0 ARE IN micro - microfarads (W) except where noted. VOLTAGE READINGS TO COMMON GROUND ARE MEASURED WITH VACUUM TUBE UXTMETER UNDER NO SIGNAL CONDITIONS WITH TUNING

3、 CAPACITOR CLOSEO AND VOLUME CONTROL AT MAXIMUM CLOCKWISE ROTATION Te? - COMMON GROUND SYMBOL. - EXTERNAL CONNECTION TO PRINTED CIRCUIT 2N24IA MMW 2-9 VOLT BATTERIES = IB) BASE “i- TRANSISTOR LAYOUT (BOTTOM VIEW) OSCILLATOR COIL (BOTTOM VIEW! 6-jo O of 5 I.P TRANSFORMER (BOTTOM VIEW ) 0-0-0 Output m

4、eter reading to indicate 50 milliwatts Output meter connection. Connection of generator ground lead . Generator Modulation. Position of volume control. .0.4V Across speaker voice coil .Common Ground .30% 400 cycles .Fully Clockwise Generator Frequency Dummy Antenna Generator Connections Trimmers Adj

5、. in order shown for Max. Output Function of Trimmer Open 455 Kc . 05 pf CIA A1 (.Top of T3) I.F. A2( Top of T2) I.F. A3 (Bottom of Tl) I.F. A4 (Top of Tl) I.F. Open 1670 Kc Test Loop A6 Oscillator 1400 Kc 1400 Kc Test Loop A7 Antenna 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. 26 收音机爱 好者资料库 RadioFans.CN