Crosley-Corp-303 电路原理图.pdf

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1、MANUAL OF 1951 MOST-OFTEN-NEEDED RADIO DIAGRAMS /T T /I MODELS 11-301U, 11-302U, 11-303U, 11-304U, 11-305U (Chassis 303) H2 TS2 /SEE NOTE 9 i K.IO00 2 I-F-455KC n 5 ALL CAPACITANCE VALUES IN MMF AND ALL RESISTANCE VALUES IN OHMS LWLESS OTHERWISE NOTED A NUMBER ONE TERMINAL ON I F TRANSFORMERS COOED

2、WITH GREEN DOT NUMBERS PROGRESS CLOCKWISE NUMBER THREE TERMINAL CODED BLUE 6 4et DENOTES COMMON WIRING 6 fh DENOTES CHASSIS - 7 3NSERT THE POWER R_UG INTO THE RECEPTACLE ON CHASSIS TO ACTUATE SWITCH SW2 FOR BATTERY OPERATION 8 SWITCH SW2 SHOWN IN UNE OPERATION position slider contacts move one POSIT

3、ION DOWN FOR BATTERY OPERATION 9 EARLY PRODUCTION SETS WERE BUILT AS SHOWN BY DOTTED L*S TERMINAL 4 OF T I WAS NOT CONNECTED TO COMMON WlhlNG IT WAS CONNECTED TO LUG I Of V2 SOCKET R2 WAS A 1.0 MEGOHM, 1/2 WATT RESISTOR (PART NO. 3937392). CONNECTED FROM I TERMINAL! TO 3 OF T2 R 19 WAS CONNECTED FRO

4、M THE JUNCTION OF R8. R9. C7B AND LUG I 3 OF SOCKET V4 TO THE JUNCTION OF R 3 fT| AND LUG 3 OF SOCKET V2 Cll WAS A 05 S MFD PAPER CAPACITOR IRART NO 39001-IT) I CONNECTED FROM THE JUNCTION OF R3, - R19. AND LUG 3 OF SOCKET V2 TO COMMON j 0 D | WIRING LUG 3 OF SOCKET V2 AND LUG S OF SOCKET V4 WERE CO

5、NNECTED TO SW2 AS INDICATED IN FILAMENT CIRCUIT R17 WAS NOT CONNECTED TO I OF V2 IT WAS CONNECTED TO T V2 WAS V3 AND V3 WAS V2 V l ALSO MAD A SH*LD (PART NO W-I447B4), THE SAME AS V2 REVISING AN EARLY PROOuCTlON SET TO A LATER PRODUCTION SET. AS SHOWN BY THE SOLID LINES IN SCHEMATIC WIRING DIAGRAM,

6、IMPROVES ITS SENSITIVITY AND STABILITY INSERT POWER CORD PLUG FOR BATTERY OPERATION d TSEE NOTE 9 INTERMEDIATE FREQUENCY: 455 kc, CONNECT HIGH SIDE OF LOOP TO ANTENNA TRIMMER (RED WIRE) CONNECT LOW SIDE DF (LOOP TOLUG0N15NG F1?AMt (YELLOW WIRE) OSC TRIMMER X 1620 KC BOTTOM VIEW OF TUBE SOCKETS VOLTA

7、GES MEASUREO WITH AN ELECTRONIC VOLTMETER FROM SOCKET LUG TO ( B) W J = WIRING JUNCTION N C = NO CONNECTION A = VOLTAGES MEASURED WITH RADIO PLUGED INTO 117 V 60 CYCLE LINE ALL OTHER VOLTAGES MEASURED IN BATTERY POSITION WITH A =1.45 VOLTS. B = 67l/2 VOLTS r * ANT TRIMMER , 1400 KC CONTACT v A BATTERY CLIP A + CONTACT OUTPUT 1 45.4 W J -v A 90_ 3 V4 Y B BATTERY CONNECTOR 455 KC CONVERTER A 0 8 Tab . Ist l-FTRAN 455 KC l-F AMPLIFIER 4 O TO a c DET.AVC ISTaudiq am PL. 4 23 GANG 4-16 CLOSED -11 收音机爱 好者资料库 RadioFans.CN