RCA-Victor-Co-Inc-T8-18 电路原理图.pdf

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1、PAGE 161-B MODELS T 8-18, C 8-19, C 8-20and D 8-28 Eight -Tube, Three -Band, A -C, Superheterodyne Receivers andRadio -Phonograph MODEL T 8-18 MODEL D 8-28 FREQUENCY RANGES Band A Band B Band C Intermediate Frequency 540. 1,625 kc. 1,625. 5,700 kc. 5,700.18,000 kc. MODEL C 8-19 TUNING INDICATOR ANT.

2、 (4). COIL 6 C-i- 460 KC C -I2 ,rsC-18 6008C 0020 MODEL C 8-20 8000K 80 -000K C 8000Kc GET. 05C. DET. 0 COIL R. F. AMR 5 6F5 DRIVER c-9 KO04 6H6 2tvDET. y AMC IF. 2AMR 111.1.F TRANS 7RECT. 1,400K C. osc.(C -IS) ADJ. CENTER REAR OF CHASSIS 2tv TR 3 Radiotron and Coil Locations Electrical Specificatio

3、ns ALIGNMENT FREQUENCIES Band A.600 kc. (osc.), 1,400 kc. Band B Band C 18,000 kc. 51.587 (osc., det., ant.) .None required (osc., det., ant.) 460 kc RADIOTRON COMPLEMENT (1) RCA -6K7Radio -Frequency Amplifier (2) RCA -6A8.First Detector -Oscillator (3) RCA -6K7.Intermediate Amplifier (4) RCA -6H6Se

4、cond Detector-A.V.C. POWER SUPPLY KATINGS Rating A 105.125 Rating B 105.125 Rating C105.130/140-160/200-250 LOUDSPEAKER TypeElectrodynamic Voice Coil Impedance21/4 Ohms at 400 Cycles PHONOGRAPHD 8-2-8 Type Manual Turntable S eed78 R.P.M (5) RCA -6F5 Audio Voltage Amplifier (6) RCA -6F6 Audio Power A

5、mplifier (7) RCA -5Z4 Full -Wave Rectifier (8) RCA -6E5 Tuning Indicator D 8-.28R.c) to ONLY Volts, 50.60 Cycles, 135 Watts 50.60 Cycles, 100 Watts Volts,25 Cycles, 135 Watts 25.60 Cycles, 105 Watts Volts, 50.60 Cycles, 135 Watts 40-60 Cycles, 100 Watts POWER OUTPUT RATINGS Undistorted 21/4 Watts Ma

6、ximum 5Watts Type of Pickup. Improved Low -Impedance Magnetic Picku. Im .edance 7 Ohms at 1,000 Cycles RCAVICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A 收音机爱 好者资料库 RadioFans.CN 23.04 CI 75 -2TS MMl. C2 400 2121F. LL GT 400H 6K7) 0.1640CS C6 .460. x 2-10 o MT1F.MMF Mr. C3 -400

7、0 HMV ANT. COIL- INTERNAL CONNECTIONS DEL COIL -INTERNAL CONNECTIONS 5 0,1568 L OSICIOL -INTERPOL COMMrims TUNING TUBE SOLNET REAR VIEW 222 12PoEt.63-B T8-18, C8-19, C8-20 1-Neutralizing coil (L21) Cone-Reproducer cone (L22) -Package of 5 (table model) Cone-Reproducer cone (L22) -Package of 5 (conso

8、le model) Connector-Three-contactfemalecon- nector plug for reproducer cable Connector-Three-contact male connec- tor for reproducer 11610 11347 11382 11210 11381 11349 Knob-Station selector knob assembly- comprisingonesmallandonelarge knob-Package ofS Knob-Volume controlortonecontrol knob-Package o

9、f Resistor -1 megohm-Carbon type -1/10 watt-(R33)-Package ofS Screw-Chassismountingscrewassem bly-Package of 4 Socket-Tuning tube socket and cover Spring-Retainingspringforknobs, Stock No. 11347, No. 11582 and small knob in Stock No. 11610-Package of 9618Reproducer-Complete (table model)4982Spring-R

10、etaining spring for large knob 9619Reproducer-Complete (console model) in Stock No. 11610-Package of 10 11253Transformer-Output transformer-(T2) 11886Washer-Springwasherusedtohold fieldcoil securely-Package of5 3391Spring -Motorboardmountingspring assembly -comprisingonebolt,one T8-i 8c5-19c8-2.0 MI

11、SCELLANEOUS ASSEMBLIES Cwasher,twocupwashers,one bottomspring,onelockwasher,and one cap nut 11996Bracket-Tuning tube mounting bracket and clamp assembly 11949Transformer-Phonograph inputtrans- 11276Escutcheon-Tuning tube escutcheon former-(T3, R26,R33,C40,C41, 11376Escutcheon-Station selector escutc

12、heon and crystal C52) 11582Knob-Range switch knob-Package of 5 11610Knob-Station selector knob assembly- comprising one small and one large knob-Package of 5 11347Knob-Volume control or tone control knob-Package of 5 11382Resistor -1 megohm-Carbon type -1 10 watt-(R33)-Package of 5 11210Screw-Chassis mounting screw assem- bly-Console Model-Package of 4 11377Screw-Chassis mounting screw assem- bly-Table Model-Package of 4 LIST