Philco-Radio-and-Television-Corp-52-544 电路原理图.pdf

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1、MANUAL OF 19S2 MOST-OFTEN-NEEDED RADIO DIAGRAMS PHILCO RADIO-CLOCK MODELS 52-544, 52-544-1 AND 52-544-W NOTCt MOUND 7 CNAttlS UDOO MCfUkTION Mm W T I2AV6 per-A VC- ovTPvT tJ AUDIO .Oiuf S0L66T ir-455HC _LI IZ_11 M_U l_IJ 13_ S0L6CT I2BA8 7A6 I2AV6 ii - iH APPLIANCE 1 T , 1- r _1 .-AUTO A “n TIMER 1

2、RECEPTACLE 1 YELLOW / OFF L * J WHCEL 1 DOT 1 1 WHITE 1 BROWN lock MOTOR ON -s- CONOtNStR SYMBOLS FIXED TRIMMER VARIABLE ELECTROLYTIC fif. If. AND AUDIO SIGNAL PATH 05C SIGNAL PATH LESS than 1 OHM ALL RESISTOR VALUES IN OHMS UNLESS MARKED OTHERWISE NOTE VOLTAGES SHOWN WERE MEASURED WITH 201000 OHMS-

3、PER-VOLT METER PROM POINTS INDICATED TO B MINUS AT A LINE VOLTAGE OP 117 V AC ALIGNMENT SIGNAL GENERATOR CONNECTION TO RADIO DIAL DIAL SETTING SETTING RADIO SPECIAL INSTRUCTIONS ADIUST Connact ground lend to B; out- 455 kc. Tuning con- Adiuil tuning coroi. In order glr- TC42nd 1-1 sec. pul lead thro

4、ugh -l-iiL condenser denser iully g, maximum output. _2nd 1-1 pri. to grid (pin 6) ol 7A8. meshed. TC2iBt 1-1 tec. Radiating loop note below). 1600 kc. 1600 kc. Adliiit trimmer for maximum out- CllBOec. put Same as step 2. ISOO kc. ISOO kc. Adjust trimmer for maximum out- CIAAerial put RADIATING LOOP: Make up a 66 turn. 6-inch-diameter loop, from Insulated wire; connect to signal-generator leads and place near radio loop aerioL 111 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN