Philco-Radio-and-Television-Corp-K-778 电路原理图.pdf

《Philco-Radio-and-Television-Corp-K-778 电路原理图.pdf》由会员分享，可在线阅读，更多相关《Philco-Radio-and-Television-Corp-K-778 电路原理图.pdf（2页珍藏版）》请在收音机爱好者资料库上搜索。

1、收音机爱 好者资料库 RadioFans.CN S3 DET AVC 1 AUDIO VOLUME R-22, MOST-OFTEN-NEEDED 1962 RADIO SERVICING INFORMATION TO T. TO TIMER TO T MOTOR Figure 3. Bottom View o! Perma Circuit Panel Component Layout Model K-778 SIEEP SWITCHModel K-778 employs a sleep” switch which is set to turn the radio off after a de

2、sired length of time (up to 60 minutes). LULLAWAYAll clock radio models except K-777 have the on-off switch in the filament return line. When the switch is opened, the set fades out rather than cuts off. Model K-777 has a conventional switching arrangement located in the B line. MODELS K-777 and K-7

3、78 have similar circuitry with slight variations as shown i-1;i ii;i ic-ic. i !_L_I I_ Model Switch K-777 B K-778 A TIMES SWITCHES Figure 4, Schematic Diagram Models K-777, K-778 Figure 5. Bottom View. Partial Printed Panel Showing Model K-777. Foil Difference in B-Circuit (Figure 3) 81 收音机爱 好者资料库 RadioFans.CN