Philco-Radio-and-Television-Corp-PT-42 电路原理图.pdf

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1、MANUAL OF 1941 MOST POPULAR SERVICE DIAGRAMS H$Tt - To Ctutsat* Tim Loo* 0*tmmro* NT . TUNING G( win AWP trt LtT .ot*4 , 5 O*/ /T3v $ I - 0 S Q.ooiS/ ; (D 2oW( Vo- (g) ?Ca.: 35Z3 5QL6GT 7A8 7B7 7C6 SCHEMATIC DIAGRAM-PT-42, PT-44 oo .oroB oo I gc?gt bp i oo oJp oo Models PT-30, PT-42. PT-44. PT-49 Mo

2、del- PT-SO. PT-42, PT-44, nod PT-4D are five (5 I tube A. C. or I). ( operated Super-heterodyne compact radios employing a built-in loop aerial. These Models are similar with the ex ception of the cabinets, chassis and speaker size. In addition each Model includes a tuning band from 5-lu to 1600 K.

3、C., Automatic Volume Control; beam power pentode audio output stage and Phileo Loktal tubes. INTERMEDIATE KHKI ENt Yi 455 K. C. POWER SIPPLY: 115 Volts. A. C. or D. C. PHILCO TUBES: 7A8, converter; 7B7, I. F. Amplifier; 7C6. 2nd detector, A. V. C., 1st audio; 50L.6GT, beam power audio out put and a

4、35Z3, rectifier. AEHIAL AND GROUND: Under ordinary operating conditions an outside aerial or ground is not required. In some loca tions, however, such as steel reinforced buildings and other shielded areas, an outside aerial should be used for maxi- mum performance. For this purpose an outside aeria

5、l oon- CN nection is located on the rear lower left corner of the chassis Zs Simply remove the lug from under the screw and attach tin aerial lead to the lug. 7A8) 44HO (7S7 12 a-1 -;2a CS) GO GO 50L6&T 0 x |Q jpom (5) 7C6 COMPILED BY M. N. BEITMAN, SUPREME PUBLICATIONS 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN