RCA-Victor-Co-Inc-6K1 电路原理图.pdf

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1、MODECGE66ki Thisreceiver issimilarto Model 6K exceptfor minor changes which include: :1; An RCA -5W4 rectifier used in place of the RCA -5Z4. (2) The .063 -ohm heater resistor (R15) isomitted. (3)Athree-point tone control (S3)used in place of the variable tone control(R14). (4) Different power trans

2、formers. The tone control (S3) is connected as follows: Viewing tone con- trol from rear and starting from counter-clockwise lug, lug 1 connects to a .017 mfd. capacitor (C30), the other side of this capacitor(C30) connects to chassis. Lug 2 connects to the junction of capacitor (C20) and resistor (

3、R9).Lug 3isnot used. Lug4connects direct to the plate contact of socket No. 5. The d -c resistance of the power transformers are: No. 12644, Pri. 8.6 ohms, Sec.745 ohms.No.12645, Pri.12.9 ohms, Sec1120 ohms. No. 12646, Pri. 24.5 ohms, Sec. 760 ohms. The voltages for the RCA -5W4 rectifier are:Plate

4、to plate,692 volts. Either plate to chassis - ground, 346 volts. All other voltages remain the same. All Service Data for Model 6K are directly applicable to these re- ceivers except the changes stated above Replacement Parts listed below. Stock No. Description 12930 Board -Antenna and ground termin

5、al board 12717 Board -Phonograph terminal board 11451 Capacitor -.017 Mfd.(C30) 13918 Dial -Station Selector dial 5145 Resistor -100,000 ohms, carbon type, 1/4 watt (B10) 11195 Socket-5-contact 5W4 Radiotron socket 13681 Tone control and power switch (S1, S3) 12644 Transformer -Power transformer, 10

6、5-125 volts, 50-60 cycles (T1) 12645 Transformer -Power transformer, 105-125 volts, 25-60 cycles (T1) 12646 Transformer -Power transformer, 100-130/140-160/ 195-250 volts, 40-60 cycles (T1) 11347 Knob -Tone control knob Stock Nos. 11315, 12670, 12658, 12669, 3118, 12668, 11999, 12132, 12133, and 11582 are not used in Model 6K1. 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