Olympic-Radio-and-Television-Inc-442 电路原理图.pdf

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1、VOLTAGE RATING: 105-125 V D.C. OR 105-125 V. A.C., 50-60 CYCLES POWER CONSUMPTION: 30 WATTS R.F. CHOKE, 12 TURNS- 20 INSULATED WIRE WOUND ON CONDENSER. FOR 230VD.C. OR 230V SO-SO CYCLES A C OPE RATI ON,USE LINE AOAPTER CORO, PART LC-63Q. OSC. TRIMMERS C4(SW) TOP C3(BC) BOTTOM BROADCAST-SHORTWAVE SWI

2、TCH -POINTER DIAL SHAFT NOTES: L ALL RESISTORS 20% TOLERANCE, */| MATT, UNLESS OTHERWISE SPECIFIED. E. ALL NICA C0N0EN8EWS 20% TOLERANCE, UNLESS OTHERWISE SPECIFIED. 3. ALL VOLTMCS MEASURED SCTWEEN POINTS INDICATED ANO S-.WITH VOLUME CONTROL FULL ON, ANO WITH MHO SWITCH SET IN *00* POSITION, USIN6 2

3、0,000 OHMS-PER-VOLT METER. ALL REA0IN6 10*. MEASURED WITH INPUT VOLTASC OF 117V., SO CYCLES A.C LISENO: X CHASSIS SROURO LI UNDERSIDE 1*1 I.F OF CHASSIS 455 KC. L3 UNDERSIDE OF CHASSIS ALIGNMENT PROCEDURE CHART ANT. TRIMMER- C1(BC) CONNECT HIGH SIDE OF SIGNAL GENERATOR TO- SET SIGNAL GENERATOR TO- T

4、URN RECEIVER DIAL TO- ADJUST THE FOLLOWING FOR MAXIMUM OUTPUT. (KEEP SIGNAL FROM SIGNAL GENERATOR AS LOW AS POSSIBLE). R.F SECTION OF VARIABLE CONDENSER OR PIN 4 OF THE 12SK7 TUBE IN SERIES WITH A .1 MFD. 400 VOLT CONDENSER. 4 55 KC. FULL CLOCKWISE POSITION (CONDENSER PLATES FULLY OPEN), L4 AND L3 (

5、2ho. I.F. TRANSFORMER) R.F SECTION OF VARIABLE CONDENSER OR PIN 8 OF THE 12SA7 TUBE IN SERIES WITH A .1 MFD. 400 VOLT CONDENSER. 455 KC. FULL CLOCKWISE POSITION (CONDENSER PLATES FULLY OPEN). L2 AND LI (1st. I.F. TRANSFORMER) REPEAT STEPS 1 AND 2 USE 1500 KC. 1500KC. ON CALIBRATION LABEL (150 ON DIA

6、L) C 3 (OSCILLATOR TRIMMER) RADIATED SIGNAL (CONNECT BOTH SIDES OF SIGNAL GENERATOR TO RADIATION LOOP). 1500 KC. MAXIMUM SIGNAL 1500KC. ON CALIBRATION LABEL Cl (ANTENNA TRIMMER) 600 KC. MAXIMUM SIGNAL 600KC. ON CALIBRATION LABEL C5 (PADDER) ROCK VARIABLE FOR MAXIMUM SIGNAL REPEAT STEPS 4,5, AND 6 AN

7、TENNA WIRE ON LOOP IN SERIES WITH 15 MC. 15 MC. ON CALIBRATION LABEL C4 (OSCILLATOR TRIMMER) SECOND PEAK FROM TIGHT POSITION C2 (ANTENNA TRIMMER). WHILE ADJUSTING C2,ROCK VARIABLE FOR MAXIMUM SIGNAL. A 400 OHM CARBON RESISTOR. 5 MC. RESONANCE (APPROX. 5 MC. ON CALIBRATION LABEL) 5 MC. CALIBRATION LINE (AT RESONANCE) COINCIDES WITH ALIGNMENT LINE ON STRAP. IF NOT REPEAT STEP 8. 63 收音机爱 好者资料库 RadioFans.CN