Gamble-Skogmo-Inc-678 电路原理图.pdf

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1、MANUAL OF 1939 MOST POPULAR SERVICE DIAGRAMS CONTROL HEAD IN THIS INCLOSURE I GROUNDED TO CHASSIS THRU OUTER 8RAID OF 4Q_ ch)- Icii :sp oonKin dr*r PRONG SIDE or PLUG REP OR BLUE YELLOW MODEL 678 BOTTOM VIEW OF CHASSIS VIBRATOR R1 101161 1.2 megohm volume Cll 1296 .003 Mica R2 13019 1 megohm w. C12

2、11625 .25 X 400 V. R3 130275 500 ohm w. C13 12912 .OOCS Mica R4 13079 400 ohmw. C14 Plate Trimmer on Input I.F. R5 13019 1 megohm w. CIS Grid Trimmer on Input I.F. R6 130275 500 ohm w. C16 10031 .5 X 120 V. R7 13012 50M ohm w. C17 10031 .5 X 120 V. R8 13012 SOM ohm w. C18 1009 .05 X 200 V. R9 13021

3、20M ohmw. C19 Plate Trimmer on Output I.F. RIO 130196 30M ohm1 watt C20 Tertiary Trimmer on Output I.F, Rll 130235 1500 ohm w. C21 Grid Trimmer on Output I.F. R12 1307 40M ohmw. C22 11625 .05 X 200 V. R13 13019 1 megohm w. C23 1295 .0001 Mica R14 13020 lOOM ohm w. C24 10011 .01 X 400 V. R15 130118 6

4、00M ohm w. C25 1295 .0001 Mica R16 130257 5 megohm5 w. C26 10011 .01 X 400 V. R17 13019 1 megohm w. C27 10026 .02 X 400 V. R18 130101 600 ohm w. C28 11988 20 mfd.25 w. v. lytic R19 13011 250M ohm w. C29 100101 .0055 X 1600 R20 13038 2 megohm w. C30 129114 .0003 Mica R21 1303 500M ohm w. C31 10047 .0

5、02 X 600 v. R22 130269 100 ohm w. C32 11988 15 mfd.450 w. v. lytic R23 130269 100 ohm w. C33 11988 15 mfd.450 w. v. lytic R24 13071 4M ohm w. C34 100103 .004 X 800 y. R25 13092 IM ohm w. C35 1001 .1 X 400 volt R26 101162 1 megohm tone control C36 10013 .05 X 400 V. R27 130199 1500 ohm Resistor1 w C3

6、7 12967 .00004 Mica R28 R29 R30 130231 13020 130299 75 ohm w. lOOM ohm w. 10 ohm w. T1 111118 PARTS P. B. Antenna Coil Assembly Cl 12483 CONDENSERS Antenna Shunt Trimmer T2 T3 T4 10949 110109 108120B P. B. R. F. Coal Assembly P.B. Oscillator Coil. Input I.F. Coil-465 kc. C2 12481 Antenna Series Trim

7、mer T5 108115B Output I.F. Coil465 kc. Auaio Driver Transformer C3 12480 R. F. Shunt Trimmer T6 10584 C4 100102 .15 X 400 V. T7 10583 Output Transformer C5 12480 Oscillator Shunt Trimmer T8 114155 S Dynamic Speaker C6 129137 ,0005 Mica T9 104158 Power Transformer C7 129136 .00017 Mica LI 10566 A Cho

8、ke C8 12997 .00005 Ceramicon5% L2 10519 *A Choke C9 1292 ,0005 Mica PI 10797 6-8 V. Pilot Light T51 CIO 11625 .05 X 200 V. SI Off-on Switch on volume ccmtrol 6J5GT SHi: 6SK7 VOLTAGES MEASURED WITH |000 OHM PER VOLT VOLFMETER BETWEEN SOCKET TERMINALS AND CHASSIS. I 6A8GT * -cannot be measured with vo

9、ltmeter. 1 Y Y E) B-6.V. OEPENOINO ON CAR SATTERr PCLABITY. fifl h-NEC. OSC. VOLTAGE BETWEEN 4T06V.USE| R.r. choke in series with leads 6) (7)3 OTHERWISE OSC. MAY STOP OPERATING. | 6N7G 265 0 6K7GT Bottom View of Remote aamble-Skogmo, Inc. -.r.S“ COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS YELLOW 收音机爱 好者资料库 RadioFans.CN