Zenith-Radio-Corp-L-505 电路原理图.pdf

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1、MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS MODEL L505 CHASSIS 5L41 (Ti IOC y 031 c3 M3J.N3AN09 QU DUMMY PLUG POSITION OF TERMINALS SWITCH S I CIB-ANT. TRIMMER CIO- DET. TRIMMER ClE-OSC. TRIMMER DN-OFF SWITCHc* B VOLUME CONTROL I I 4 2 3 6 5 ON COUPLATE, SECTION LEADS LINE UP ACCORDING TO THE PA

2、RT NUMBER AS SHOWN. USE ONLY ZENITH NON-INDUCTIVE ELECTROLYTIC CONOENSER FOR REPLACEMENT. IF ANY OTHER TYPE OF ELECTROLYTIC IS USEO IT WILL BE NECESSARY TO ADD PARTS SHOWN IN DOTTED LINES. I.F. TRANSFORMER NUMBERING STARTS WITH NO. I TERMINAL AS FIRST TERMINAL CLOCKWISE ANO ADJACENT TO MARKER AS VIE

3、WED FROM BOTTOM OF CHASSIS. ALL VOLTAGES MEASUREO FROM COMMON RETURN TO POINTS INDlCATEO WITH A D.C. VACUUM TUBE VOLTMETER. ALL RESISTORS 20% TOLERANCE UNLESS OTHERWISE SPECIFIED. i.f. Frequency 455 k.c.tuning range 535-1620 K.C. STD. BC. / BATTERY PACK NO. Z962. /-_-speaker leads PRI, BOTTOM SEC. T

4、OP T2-2ND.I.F. TRAN6.- A.C. CORO TO BE PLUMED IN HERE FOR BATTERY OPERATION Tl- 1ST I.F. TRANS.- PRI, BOTTOM - SEC. TOP-* CORD OVER SHAFT A IV2 TURNS AROUND PULLEY-, 2/S TURN AROUND PULLEY- DIAL DRIVE CORD OPERA, OONfCCT EUKMY INPUT SG. SET TION OSCILLATOR TO ANTEM4A FREQUENCY U DIAL TO 1*b FUHHJSE Cbnmrtsr aid Two buns Loosely coupled to Wavaaavist Two turns loosely coupled to Pri. &Ssc. I. F. 600 Kc. 1st. & &d. Alltyvoent I. F. Osc. Set 1600 Kc. BC 1600 Kc. Trim. Oscillator C1E to sods 1400 Kc. BC 1400 Kc. 收音机爱 好者资料库 RadioFans.CN