Zenith-Radio-Corp-B513V 电路原理图.pdf

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1、VOLUME R-19, MOST-OFTEN-NEEDED 1959 RADIO SERVICING INFORMATION ZENITH RADIO CORPORATION MODEL B513Y, L, F, V, CHASSIS 5B01 rk- 3.5X - AT 600 TO 455KC 455KC TO 400/ 400i05 WATT OUTPUT I2BE6 CONV. 400V .05 WATT OUTPUT I2AV6 DET.AMP. 50 C5 PWRAMP. mv . ii J. |80 MFO OENOTES COMMON RETURN 6- . DENOTES

2、-pCMtSSIS L2 OSCILLATOR COIL NOUS: ALL VOLTAGES MEASURED FROM COMMON RETURN TO POINTS INDICATED WITH AN A.C. D.C. OR VACUUM TIME VOLTMETER. USE ONLY ZENITH NON-INDUCTIVE ELECTROLYTIC CONDENSERS FOR REPLACEMENT. IF ANY OTHER TYPE OF ELECTROLYTIC 1$ USED IT WILL BE NECESSARY TO ADO C7 SNOW IN OOTTEO L

3、INES. I.F. TRANSFORMER NUMRERINO STARTS WITH PI TERMINAL AS FIRST TERMINAL CLOCKWISE FROM MARKER CODE TERMIRAL AS VIEWEO FROM BOTTOM OF CHASSIS. I.F. FREQUENCY KC TURING RANGE D3S-I520 KC ALL RESISTORS20i TOLERANCE. l/2 WATT, CANNON UNLESS OTNEONISE SPECIFIED. Tl 1ST I.F TRANSFORMER L3 PRI. BOTTOM L

4、4 SEC. TOP CIB ANTENNA TRIMMER CID OSCILLATOR TRIMMER -ON-OFF SWITCH 8 VOLUME CONTROL TUNING T2 2ND I.E TRANSFORMER L5 PRI. BOTTOM L6 SEC TOP ALIGNMENT PROCEDURE The I.F. transformers incorporated in this receiver are of the new permeability tuned type. The advantage af this type is its extreme stab

5、ility under various humid ity and temperature conditions. The upper coil is the secondary and the lower the primary. When ad)usting these I.F. transformers, the tuning wrench 68-19 can be inserted into the top slug, rotated until maximum output is obtained and then dropped down ta the lower slug and

6、 the same operation repeated. OPERATION CONNECT OSCILLATOR TO DUMMY ANTENNA INPUT SIG. FREQUENCY SET DIAL AT TRIMMERS PURPOSE 1 Converter Grid .5 MM. 455 Kc. 600 Kc. L3.L4.LS.L6 Align I.F. for max. output. 2 One Turn Loop Coupled Loosely to Wove Magnet. - 1600 Kc. 1600 Kc. CIO Sot Osc. to Oiol Scole. 3 - 1400 Kc. 1400 Kc. CIB Align Antenna Stoge. 173 收音机爱 好者资料库 RadioFans.CN