Noblitt-Sparks-Industries-Inc-9595 电路原理图.pdf

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1、VOLUME R-20, MOST-OFTEN-NEEDED 1960 RADIO SERVICING INFORMATION 2 N I lOt CP-I A 6 |CI8 TOP _A_4_JCIA BOTTOM 2NtlOI RESISTANCE VALUES ARE IN OHMS; K* 1000. i , CI5A CAPACITANCE VALUES LESS THAN 1.0 ARE IN MlCROFARADS(/*), 1 BOMf 8 VALUES GREATER THAN 1.0 ARE IN MtCRO-MlCROFARADSU*/*) EXCEPT WHERE NO

2、TED. VOLTAGE READINGS TO COMMON GROUND ARE MEASURED WITH VACUUM TUBE VOLTMETER UNDER NO SIGNAL CONDITIONS WITH TUNING CAPACITOR CLOSED 8 VOLUME CONTROL AT JfO OYi MAXIMUM CLOCKWISE ROTATION. K JJ COMMON GROUND SYMBOL. IS-EXTERNAL CONNECTION TO PRINTED CIRCUIT, 4 CI5B 80Mf i T4rV (jj) 3 2N233A Iris;

3、2N 194 A. R2- - tCP-S1 C2-* pT y. - C5A,8 ,-,-1 C8A,B Signal test nr TEST POINT FREQUENCY SERIES INPUT FOR CAPACITOR 5 MW OUTPUT TO GENERATOR (.475 V. ACROSS 45A) IF TRANSFORMER BASE (BOTTOM VIEWS) 5. 455 KC .05Mf 455 KC .05Mf L7vUvT2yUv3A C7 CIO I I * 2 | | A I 455 KC .05Mf 000 KC I s 900 MV 30 MV

4、5 MV 200 MV/m OSCILLATOR COIL COLLECTOR-(o OjEMITTER TRANSISTOR iL L!_l ALIGNMENT PROCEDURE Output meter reading to indicate 5 milliwatts .475V Output meter connection.Across speaker voice coil Connection of generator ground lead.Common Ground Generator Modulation. 30% 400 Cycles Position of volume

5、control.Fully Clockwise Position of Variable I Generator Frequency Dummy Antenna Generator Connections Trimmers Adj. in order shown for Max. Output Function of T rimme r Open 455 Kc . 05 pf C IB A1 (Top of T3) I.F. A2 (Top of T2) I. F. A3 (Top of Tl) I.F. Open 1670 Kc Test Loop A4 Oscillator 1400 Kc

6、 1400 Kc Test Loop A6 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. The alignment procedure should be repeated in the original order for greatest ac curacy. Always keep the output from the signal generator at its lowest possible value to make the AVC action of the receiver ineffective. 23 收音机爱 好者资料库 RadioFans.CN