RCA-Victor-Co-Inc-R-18-W 电路原理图.pdf

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1、PAGE 261-B MODEL R18 -W 115 Volt AC/DC Universal Receiver Electrical Specifications Voltage Rating.105-125 Volts, 25-133 Cycles, A. C. or D. C. Power Consumption50 Watts at 115 Volts, 60 Cycles Frequency Range540-1710 K. C. Type and Number of Radintrons- 1 RCA -78, 1 RCA -77, 1 RCA -38, 1 RCA-25Z5-T

2、otal 4 Undistorted OutputA C. 0.55 Watts D. C. 0.15 Watts i:111 Ma Figure A-Schematic Circuit a RADIOTRON SOCKET VOLTAGES Measured at Maximum Volume -115 Volts, 60 Cycles and 115 Volts D. C Rnaliotron No. Cathode to Control Grid, Volts I). C. Cathode to Screen Crid, Volta D. C. Cathode to Plate, Vol

3、ts D. C. Plate Current, M.4. Filament or Ilea:cr Volts A. C.D. C.A. C. I D. C.A. C. D. C.A. C.D. C. RCA -78, R. F. 2.51.5100 95 I50 45 200 *100 1008.05.0 0.1 6.0 11CA.77, Detector*5.0 *3.0 550.0.26.0 RCA -38, Output 18.09.0180 9517090 14.07.06.0 RCA -2525, Rectifier- 115-30.020 0 25.0 impossible to

4、measure on ordinary voltmeter. NOTE: 25 cycle voltages will be less than those obtained on 60 cycles. REPLACEMENT PARTS Insist on genuine factory tested parts, whichare readily identified and may be purchased from authorized dealers Stock No. DESCRIPTION listS tock No. DESCRIPTION List RECEIVER ASSE

5、MBLIES 3714Coil-Detector coil 2731 Resistor -10.000 obma-Carbon type -1 watt-Package 3715Coil-R. F. coil of 53720Resistor -250 ohms-Filament resistor 2747 Cap-Contact cap-Package of 53721Resistor -1.000 ohms-Carbon type -5 watt-Package 2981Capacitor -320 mmfd.of 5 3048Resistor -500,000 ohms-Carbon t

6、ype -3. watt-Package3722Capacitor-Comprising two 0.05 mfd. capacitors of 53723Capacitor0.007 mfd. 3066 Resistor -12,000 ohms-Carbon type -1 watt-Package 3724Reactor-Filter reactor of 56303Resistor -20.000 ohms-Carbon type -34 watt-Package 3076Resistor -1 megohm-Carbon type-Id watt-Packageof 5 of 564

7、51Condenser-Two gang variable tuning condenser 3472 Capacitor -0.0024 mfd6535Capacitor-Comprising two 4.0 mfd. capacitors-High 3536 Capacitor-Filter capacitor-Comprising two 5.0 mfd. voltage. capacitors7484Socket-Radiotron socket -5 contact 3538 Capacitor-Filter capacitor-Comprising two 4.0 mfd. 748

8、5Socket-Radiotron socket -4 contact capacitors10405Capacitor-Antenna aeries capacitor -0.002 mfd. 3542 Volume control-Complete with mounting nut 3567 Escutcheon-Station selector escutcheon-Package of 2REPRODUCER ASSEMBLIES-DYNAMIC TYPE 3568 Escutcheon-Volume control esatcheon-Package of 2 3610Magnet

9、 . 3569 Knob-Station selector or volume control knob-Pkge. of 5 6477Transformer-Output transfornier 3684 Switch-Single pole double throw-Toggle switch 7598 Cone-Reproducer cone complete-Package of 3701Capacitor -0.01 mfd. 7599Housing-Cone booming and cone assembly 3713Capacitor -0.05 mfd 9429Reproducer -Complete RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A. 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