General-Electric-Co-GD500 电路原理图.pdf

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1、MANUAL OF 1939 MOST POPULAR SERVICE DIAGRAMS want general ELECTRIC model cd-soo 6K7GT 25L6GT / /- 9 P I V 1 N. Description Symbol Description Tuning Condenser .05 mfd. Paper Capacitor .001 mfd. Paper Capacitor .005 mfd. Paper Capacitor .01 mfd., Paper Capacitor 15 mfd. Dry Electrolytic 30 mfd. Dry E

2、lectrolytic C-G C-10 R-1 R-2 R-3. -4 R-5 R-6 .02 mfd. Paper Capacitor .002 mfd. Paper Capacitor 30,000 ohm. Volume Control 15 megohm. Carbon Resistor 470,000 ohm. Carbon Resistor 3,300 ohm, Carbon Resistor 100,000 ohm. Carbon Resistor Description Tube No. Plate to B Volts 88 30* 35* 132 120. AC Scre

3、en to -B Volts 88 . 88 Cathode to B Volts 0 1.3 0 5.5 140 Filament Volts 6.4 6.3 6.2 25.0 25.0 Electrical Power Output Undistorted.X_4 watts Maximum.2.0 watts LoudspeakerPermanent Magnet Outside Cone Diameter.41. inches Voice Coil Impedance (400 cycles).3.5 ohms Voltage measured when volume control

4、is set to maximum. Line Voltage120 AC. No signal input. Measured on 500-volt scale. On DC. voltages should read approximately 10% lower. ALIGNMENT Connect the high side of the signal generator through a 250 mmf. condenser to the antenna lead. The low side of the signal g6nerator output should b6 con

5、nected to the receiver chassis through a .05 mfd. condenser. Connect a suitable output meter across the voice coil leads; then proceed as follows: 1. With gang condenser plates completely closed, the tun- mg mark should be over the last mark on the dial. 2. Tune receiver to the 1500 KC point on the

6、dial then align trimmers on the gang condenser at 1500 KC for a maxi mum output meter reading. PrecautionOne side of the power supply is connected to the chassis. Do not connect chassis to any external ground. 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