RCA-Victor-Co-Inc-RC-462-C 电路原理图.pdf

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1、收音机爱 好者资料库 RadioFans.CN PAGE 355-C Specifications FREQUENCY RANGE 535-1,720 kc Intermediate Frequency 455 kc LOUDSPEAKER 5 inch permanent -magnet dynamic POWER OUTPUT (125 volt, 60 cycle Supply) Undistorted 0.9 watts Maximum 1.4 watts POWER SUPPLY RATINGS AC Rating.105-125 volts, direct current, or

2、50-60 cycles 30 watts Alignment Procedure Output Meter Alignment.-If this method is used connect the meter across the voice coil and turn the receiver volume control to maximum. Electronic Voltmeter.-The electronic voltmeter in the Chanalyst or VoltOhmyst provides an unexcelled output indicator. It

3、should be connected to the AVC bus. Test Oscillator.-Connect the low side of the test oscillator to the receiver chassis through a .01 mfd. capacitor. When the electronic voltmeter is used as an alignment indicator the output of the test oscillator should be adjusted to produce several volts of AVC.

4、 With the output meter alignment method the oscillator output should be kept as low as possible. Calibration Scale.-The glass tuning dial may be easily removed from the cabinet and temporarily attached to the dial backing plate for quick reference during alignment. Push Button Adjustment: 1. Make a

5、list of the six desired stations, arranged in order from low to high frequencies, and manually tune -in the first station on this list. 2. Push in station button No. 1 (extreme left) and adjust No. 1 oscillator core to receive the station. 3. Adjust antenna trimmer for maximum output. Clockwise core

6、 and trimmer adjustment tunes circuits to lower frequencies. 4. Adjust for each of the four remaining stations in a similar manner. 5. Make a final careful re -adjustment of oscillator cores and antenna trimmers. MODEI. 16X-4 Chassis No. RC -462-C Steps Connect the high side of test-osc. to- Tune te

7、st- usc. to- Turn radio to- Adjust the follow - ing for maximum peak output 1 12SK7 I -F grid, in series with 0.1 mfd. 455 kc Quiet Point at 1,700 kc end of dial C23, C22 2nd I -F transformer 2 12SA7 1st del. grid, in series with 0.1 mfd. C21, C20 1st I -F transformer 3 12SK7 R -F grid, in series wi

8、th 0.1 mfd. 1,720 kc 1,720 kc C18 (osc.) 4 Radiation Loop 1,300 kt Resonance on signal C16 (ant.) 5 Repeat steps 3 and 4 Replacement Parts Insist on genuine factory -tested parts, which are readily identified and may be purchased from authorized dealers. STOCK No. DESCRIPTION STOCK No. DESCRIPTION 3

9、6239 36238 36871 37509 12724 31435 36679 34506 33584 4937 11315 5196 32787 4839 34505 36301 35096 36872 35803 37638 36226 36228 36242 34662 35871 36237 36236 36869 36868 36230 30189 6134 12955 13998 12412 CHASSIS ASSEMBLIES (RC -462C) Board-Terminal and receptacle board Bracket-Lamp bracket Capacito

10、r-Mica trimmer comprising 1 section of 10-160 mmfd., 2 sections of 25-25G mmfd. each, 1 section of 50-400 mmfd., and 3 section of 100-540 mmfd. Capacitor -56 mmfd. Capacitor -120 mmfd. Capacitor -750 mmfd. Capacitor -5,100 mmfd. Capacitor-.0018 mfd. Capacitor-.005 mfd. Capacitor-.01 mfd. Capacitor-.

11、015 mfd. Capacitor-.035 mfd. Capacitor-.05 mfd. Capacitor -0.1 mfd. Capacitor -0.2 mfd. Capacitor-Electrolytic comprising 1 section of 30 mfd. 150 volts, and 1 section of 50 mfd. 150 volts Coil-Loop primary coil Coil-Oscillator coil Coil-P.B. oscillator coil Coil-P.B. oscillator coil Condenser-Varia

12、ble tuning condenser Control-Tone control Control-Volume control and power switch Cord-Drive cord (approx. 52 -in, overall lg.) Core-Adjustable core and stud for P.B. oscillator coils Drum-Drive drum Indicator-Station selector indicator Loop-Antenna loop complete Plate-Dial back plate and pulley ass

13、embly com- plete . Pulley-Drive cord pulley Resistor -120 ohms, watt Resistor -1,200 ohrsss, 1 watt Resistor -3,900 ohms, watt Resistor -22,000 ohms, watt Resistor -47,000 ohms. watt 12264 30648 12928 30271 30992 30886 36235 34449 31251 31418 36870 36232 36233 36800 33726 32907 35570 38352 37115 368

14、74 36873 31095 36308 37831 36722 11765 34610 30900 36875 Resistor -220,000 ohms, watt Resistor -470,000 ohms, j watt Resistor -3.3 meg., ; watt Resistor -4.7 meg., watt Resistor -10 meg., j watt Screw-No. 8 x j self -tapping screw for adjust- ing lamp bracket Shaft-Tuning shaft Socket-Dial lamp sock

15、et Socket-Tube socket Spring-Drive cord spring Switch-Selector switch Transformer-First I.F. transformer Transformer-Second I.F. transformer Transformer-Output transformer Washer-C washer for tuning shaft SPEAKER ASSEMBLIES SPEAKERS STAMPED RL -81-A5 or RL -81-B2 Cap-Dust cap . Cone-Cone complete wi

16、th voice coil SPEAKERS STAMPED 92161-1 or 92161-3 Cone-Cone complete with voice coil MISCELLANEOUS ASSEMBLIES Back-Cabinet back Button-Push button Clamp-Dial clamp Cover-Station selector cover Dial-Glass dial scale. Fastener-Set of 4 push fasteners for cabinet back (2 sets required) Knob-Control kno

17、b Lamp-Dial lamp Marker-Station selector marker Spring-Retaining spring for knob Spring-Retaining spring for push button 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 PAGE 356-C 16xu H u= T 8 a O N Vb N U W ae na me RF Plate Load Resistor: In som

18、e production, the load resistor in the plate circuit of the RF tube is changed from 3.900 to 2,200 ohms. p -_ l. W t _w ,P wvv r aLLT NF rc m n a 4 e CN m ap a -.911F. n Mpll3A JI a 0 a C p $a + I V 1 dirW 1N mi 7I uds Ua 4479. T /V/ m N33L9 I- W trJitr N I-O J4 000 Mpl,3A 3nl a ax Ux J4 wr ryi 1.133.110 UNS firtri . it-,Q,gi+ H t ,6t 2 , Z- r: bt r l z: .t g z -k , %-%SIA/ iu +c - =-Je sWnJ-5,- 12 y Z i, a mF * - - 7 xY FY - iy I-1,2 T( =0, iD ii tp J i W mON O Z tlIW SO NW Ya R, o /u mF aia- p W jg_.r d .0 o . I J L v m 4 收音机爱 好者资料库 RadioFans.CN