RCA-Victor-Co-Inc-15BP 电路原理图.pdf

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1、MANUAL OF 1941 MOST POPULAR SERVICE DIAGRAMS mt MODEL 15BP Alignment Procedure Output Meter Alignment.If this method is used, connect the meter across the voice coil, and turn the receiver volume control to maximum, Test-oscillator.For all alignment operations, keep the output as low as possible to

2、avoid a-v-c action. Connect the high Tune Turn Adjust the follow side of test- test-osc. radio dial ing for max. peak oscillator to to to output 1N5GT I-F grid cap, in series with L8, L7 (2nd.transformer) .01 mfd. Quiet point 455 kc at 1,600 kc end of dial 1A7GT lst-Det. L4, L3 grid cap, in series w

3、ith .01 mfd. (1st I-F transformer) radiated signal C22 1,720 kc (Osc. Trimmer) radiated signal signal C20 1,400 kc frequency (Ant. Trimmer) radiated signal L6 near 600 kc (Rock in) Repeat steps 3, 4 and 5 until aligned. Frequency Range. 540-1,720 kc Intermediate Frequency. 455 kc RCA Tube Complement

4、 (1) RCA-1A7-GT. lst.-Det.Osc. (2) RCA-1N5-GT. I-F Amplifier (3) RCA-1H5-GT. 2nd-Det., A-F, and A.V.C. (4) RCA-3Q5 GT. Output (5) RCA-35Z5-GT. Rectifier Line Current Supply 110 to 125 volts, AC 50 or 60 cycles, or DC Batteries Required A one 1.5 volt dry plug-in type “A,” (Eveready No. 743 or equiva

5、lent) *B” two 45 volt dry plug-in type “B,n (Eveready No. 482 or equivalent) Current Consumption “A” 0.25 amperes i . “B” 11.5 milliamperes j* Battery Operation B*rt| INDICATOR WINDOW POWER LINE V _ BATTERY AgjL. SOFTTlL.LOUD VOLUME CONTROL POWER CONTROL TUNING CONTROL . CONVERSION SAiN 600 TO 45S KC , -4-4x 6wc vsoeuNQ -4- tax (AVC GBOUNDED) , APPROX -GAIN DATA J using cca cider 1 CHANALYST 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN