Emerson-Radio-and-Phonograph-Corp-783B 电路原理图.pdf

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1、MANUAL OF 1954 MOST-OFTEN-NEEDED RADIO DIAGRAMS EMERSON RADIO AND PHONOGRAPH M0DEL 7836 CHASSIS - 120200-B ALIGNMENT INSTRUCTIONS Use isolation transformer if available. If not, connect a .1 mfd. condenser in series with low side of signal generator and B neutral. ANTENNA .1 mfd. SIGNAL SIGNAL GENER

2、ATOR GENERATOR COUPLING FREQUENCY High side to grid (pin 7) ofVI (I2BE6). Low side to B neutral 455 KC Form loop of several turns and radiate signal into receiver 1620 KC N 1400 KC RADIO DIAL SETTING Variable condenser fully open. Tune for maximum output. OUTPUT METER ADJUST REMARKS Across voice coi

3、l. T2.T1 (A3, A4. Al, A2) Adjust for maximum output. If isolation trans former is nor used,re* duce dummy ant. to .001 mfd. to reduce hum modulation. Across voice coil. Trimmer C-4 (Osc.) Adjust for maximum output. Across voice coil. Trimmer C-2 (Ant.) Adjust for maximum output. RESISTANCE READINGS

4、FOR CHASSIS 120200-B Ai ci2 L_LAI! n. X-3 BOTTOM VIEW SW-3 COUPLATE PT. NO. 923024 INDICATES I CHABBIS 77777 INDICATES I t NEUTRAL I* AT* It BE* 12 BA* SOC9 S 4 34 34 34 HEATER9 SWITCH SW-2 SHOWN IN EXTREME COUNTER CLOCKWISE (RADIO) POSITION AND VIEWEO FROM KNOB ENO. * INOICATES COMPONENTS ARE PART OF COUPLATE (PART NO 9230S4). 0 REFERS TO TERMINAL NUMBER ON THE COUPLATE. 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