General-Electric-Co-100 电路原理图.pdf

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1、BOTTOM VEW Schematic Diagram, MoMs 100, 101, 103 and 105 (Revhad) KKM2BV AC-OC ItSAT S0U6T 1*00 +WV RECTIFIER MZKT/G Stage gain measurements by vacuum tube voltmeter or similar measuring devices may be used to check circuit per formance and isolate trouble. The gain values listed may have tolerances

2、 of 20%. Readings taken with low signal input so that AVC is not effective. (1) R-F Stage Gains. Antenna post to 12SA7 grid. 4 1000 kc 12SA7 grid to 12SG7 grid. 30 4SS kc 12SG7 grid to 12SQ7 diode plate.150 4SS kc (2) Audio Gain. 0.06 volt at 400 cycles across volume control (R8) with control set at

3、 maximum will give approximately J-watt output across speaker voice coil. H-*eli-H ALIGNMENT CHART Connect test oscillator to Test Pointer otc. setting setting on radio Adjustment for maximum output 12SG7 grid in teriet with 0.05 mf. cap. 455 kc 1,500 kc 2nd I-F Trana. Trimmers 12SA7 grid in tenet w

4、ith 0.05 mf. cap. 455 kc 1,500 kc 1st and 2nd I-P Trans. Trimmers Ant. Pott in teriet with 50 mmf. 1,500 kc 1,500 kc C3 (Ok.) Ant. Pott in teriet with 50 mmf. 1,500 kc 1,500 kc C2 (R-F) _VIEW FROM BOTTOM OF CHASSIS_ I2SA7 I2SG7 12507 50L6GT 35Z5GT CONDITION OF TEST MEASUREMENTS TAKEN ON EO.OOO OHMS

5、PER VOLT METER MEASURED FROM PIN TO S- SUS UNLESS SHOWN OTHERWISE 117 VOLTS LINE VOLUME CONTROL-CLOCKWISE NO SIGNAL INPUT MODELS 100, 101, 103 AND 105 Production changes were made to all Models 100, 101, 103 and 105 radios having serial Nos. 5000 and over. (2) The plate and screen filter (Cll, R6) i

6、s moved from the IF amplifier circuit to the converter plate and screen circuit. (SCHEMATIC DIAGRAM)A corrected sche matic is printed. Changes were made as follows: (1) C18 connects between the output plate and screen instead of between plate and ground. (3) The filament connections (Pins 2 and 7) to the 12SA7 converter tube are interchanged. GENERAL ELECTRIC COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 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