Sparks-Withington-Co-349 电路原理图.pdf

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1、MANUAL OF 1953 MOST-OFTEN-NEEDED RADIO DIAGRAMS STEP BY STEP ALIGNMENT PROCEDURE SPARTON RADIO ,-rwssri-1- IB DUMMY GENERATOR COMD. TRIMMER QERERATOR TUMIMO OPER- ALIGNMENT OOKNECTED DUMMY QERERATOR CORD. THE SPARKS-WITHINGTON COMPANY ATION OF TO AHTERRA FREQUENCY SETTING CHASSIS TYPE 5C3 MODELS 342

2、, 345 & 349 C2Ae * * Loop _C2B Ant. Tr. | _ 3. Repeat oporatlona 1 and 2_ 4. Cheek calibrations at 600, 1000 and 1500 KC._ * Use driver loop. * Trimmer C2D as shown on schematic is preset at factory and only on. certain conditions will have to be re-adjusted in the field. This trimmer is located on

3、side of gang. * Rock dial while adjusting for maximum output. sC2D I2BA6 I2BE6 I -1 ANTENNA SPEAKER 50C5 35 W4 O I2AU6 A.C. CORD I2BE6 CONV. C20W JCZAlt TT f :A Jc6E TOP VIEW I2AV6 2ND OET A.V.C. 50C5 P.A. -X- INDICATES CONNECTION TO B- BUSS, NOT CHASSIS. nn INDICATES CHASSIS CONNECTION. VOLTAGE CHART L5S-tI I2AV6 12 BE 6 I2BA6 50C5 RECT. 35W4- -Tso -Tac 130 rMIfflEllflWEBHWMEBPISMHSKil * AC Volt#. * Cannot b# bm#ut#4 with 20,000 ohm# p#r rolt Yoltmettr. 收音机爱 好者资料库 RadioFans.CN