Crosley-Corp-171 电路原理图.pdf

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1、MANUAL OF MOST - OFTEN - NEEDED RADIO DIAGRAMS The Crosley Radio Corporation, Cincinnati, Ohio Model 171 Specifications Model 171 is a twelve tube dual band su perheterodyne designed for operation from A.C. electric circuits. The intermediate fre quency is 181.5 Kc. Voltages and Tube Limits The foll

2、owing are the tubes and voltages measured with the receiver in operating con Tube Position Plate 58 R. F. Amplifier 267 56 Oscillator 60 58 Modulator 267 58 I. F. Amplifier 267 2B7 A. V. C. Tube 267 56 QAVC Tube 70 56 Detector 0 56 Phase Shifter 58 56 A. F. Amplifier 170 2-2A5 Output 260 80 Rectifie

3、r 355 dition but with no signal to the antenna cir cuit, and with a line voltage of 117.5 volts (235 volts for 220 volt receivers). All volt ages, except filament are measured with a 500 volt D.C. voltmeter (1000 ohms per volt) from tube contact to chassis. Filament volt ages are measured with a low

4、 range A.C. voltmeter. Screen Grid Cathode Suppressor Grid Filament 115 3.0 3.0 2.5 7.0 2.5 115 5.5 5.5 2.5 115 4.5 4.5 2.5 115 4.5 4.5 2.5 0-20.0* 2.5 0 2.5 2.5 2.5 115 2.5 267 17.5 2.5 4.9 Voltage limits are plus or minus 10% of values given. * Voltage depends on position of “Q” control. 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN