Stewart-Warner-Corp-205A 电路原理图.pdf

《Stewart-Warner-Corp-205A 电路原理图.pdf》由会员分享，可在线阅读，更多相关《Stewart-Warner-Corp-205A 电路原理图.pdf（1页珍藏版）》请在收音机爱好者资料库上搜索。

1、| MANUAL OF 1942 MOST POPULAR SERVICE DIAGRAMS STEWART-WARNER 205A POINTS MARKED ARE CONNECTED DIRECTLY TO THE | CHASSIS._ Description Condensermica, 260 mmfd. Condensermica, 110 mmfd. Condensermica. 510 mmfd. Resistorcarbon, 220,000 ohms Resistorcarbon, 470,000 ohms I. F.= 455 K.C 35Z5GT RECT. V4 w

2、att. watt. Resistorcarbon, 100 ohms 1/4 watt. Resistorcarbon, 2.2 meg. 4 watt. Resistorcarbon, 3.3 meg. 4 watt. Resistorcarbon, 18,000 ohms 1/4 watt. . Resistorcarbon, 10 meg. 1/4 watt. Resistorcarbon, 680 ohms 4 watt. Resistor140 ohms 1 watt W.W. Condenser.2 mfd. 600 volt (205B only). Resistor33 oh

3、ms 1 watt W.W. Condenser.05 mfd. 600 volt. Resistorcarbon, 1500 ohms V2 watt . Lamp- Dial (Mazda No. 47). Condenser.01 mfd. 600 volt. CondenserTrimmer . Condenser.02 mfd. 600 volt. Condenser.006 mfd. 600 volt. Condenser,004 mfd. 600 volt. Transformer1st I.F. SOCKET VOLTAGES VOLUME ON FULL WITH NO SI

4、GNAL DIAL TUNED TO S40 KC. ALL D.C. POTENTIAL MEASURED TO B- bottom yiw or chassis. LINE VOLTAGE - 117 VOLTS REAR OF CHASSIS Use a voltmeter of 1000 ohms per volt. ALIGNMENT PROCEDURE 1. Connect output meter across the voice coil; or from 50L6GT plate to B as shown on voltage chart. 2. Connect the g

5、round lead of the signal generator to the chassis through a .25 mfd. condenser. 3. Set the volume control to the maximum volume position. 4. Set dial pointer to lowest frequency point on dial scale with gang in full mesh. 5. Connect the antenna lead of the signal generator to the lug on the top of t

6、he rear section of the gang, using a 200 mmfd. mica condenser in series. Diagram Part Number Number Description 26 .500232 27 . 500236 28A-28B .500256 29 .C-500329 30A-30B .500443 31A-31B 500480 I 500566 32 . 500567 l500576 33 . C-500594 34 . . . . C-500615 35 . 83783 36 .119193 CoilOscillator . Tra

7、nsformer- 2nd I.F. CondenserElectrolytic A40 mfd.150 volt B- 20 mfd.-150 volt J . Cone and voice coil for C-500594 speaker. Condenser- variable tuning, with drum. Volume Control-1 meg, (with switch). Loop Antenna & Cabinet Back (205AA & 205BA). Loop Antenna & Cabinet Back (205AB & 205BB). Loop Anten

8、na & Cabinet Back (205AC &205BC). . SpeakerP.M. (4*) . Transformeroutput for C-500594 speaker. Condensermica, 110 mmfd. Condenser -.01 mfd. 600 voll (205A only) . 6. Set the signal generator to 455 KC. Set receiver dial to a point where it does not affect signal. Adjust the trimmer screws on the top

9、 of each I.F. Transformer for maximum output. 7. Connect the output of the signal generator in series with a 200 mmfd. mica condenser to the antenna terminal on the cabinet back. Set the receiver dial to 1500 KC. 8. Set the signal generator to 1500 KC and adjust the trimmer on the front section of t

10、he gang condenser for maximum out put of the oscillator signal. 9. Place the loop antenna in its correct position at the rear of the cabinet and adjust the trimmer screw on the back of the chassis for maximum output at 1500 KC. 140 MISCELLANEOUS PARTS Part Number Description 116467 Base for mounting

11、 electrolytic condenser. 114955 Clamp for dial cord. 112745 Clipcoil mounting . 117057 Cord -drive supplied in 3* lengths. 500562 Dial Scale . 500422 Knob (for 205AA & 205AC) (205BA & 205BC) 500428 Knob (for 205AB & 205BB) . 500527 Pointer . 81145 Retaining ring for tuning shaft. 116690 Socketoctal base . 160392 Socketoctal (rectifier) . 500499 Socketpilot lamp (with leads). 161384 Springdial cord tension. 500497 Stud dial scale retaining. 111456 Washer-spring washer for tuning shaft. COMPILED BY M. N. BEITMAN. SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN