Philco-Radio-and-Television-Corp-N-727 电路原理图.pdf

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1、VOLUME R-25, MOST-OFTEN-NEEDED 1965 RADIO SERVICING II FORMAT I N PHILCO Models N-725 and N-727 to these models) dtT AVC 1st AUDIO Bottom View Perma-Circuit Panel DESCRIPTION Resistor, 22K ohms, osc. grid Resistor, 68 ohms, I-F cathode Resistor, 2.2M ohms, AVC Control, volume Resistor, 10M ohms, 1st

2、 audio grid Resistor, 470K, 1st audio plate Resistor, 470K, 1st output grid Resistor, ISO ohms, output cathod Resistor, 220 ohms 1W. B+ filter Transformer, oscil lator Transformer, 1st I-F Transformer, 2nd I-F Capacitor, variable tuning Capacitor, 5 pf, temp. comp. Capacitor, .047 mf, AVC Capacitor,

3、 220 pf, diode filter Capacitor, .0039 mf, 1st audio Capacitor, .01 mf, out. grid Capacitor, 220 pf, out. grid Capacitor, .01 mf, out. plate Capacitor, electro lytic 30/25/20 Capacitor, .047 line bypass Part of T1 Capacitor, .01 mf, B- to gnd. A rt a mti / !* H - SYM- L0CA- SERVICE B0L TI0N DESCRIPTION PART NO. 30-1283-69 106 收音机爱 好者资料库 RadioFans.CN