RCA-Victor-Co-Inc-R-70 电路原理图.pdf

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1、PAGE 198-A MODEL R 70 Seven -Tube A -C, Superheterodyne Receiver Electrical Specifications Voltage Rating105-125 Volta Power Consumption85 Watts Radiotrons Required 3 RCA -58, 2 RCA -56, 1 RCA -247, 1 UX-280-Total 7 Undistorted Output2 25 Watts Intermediate Frequency175 K. C. R. F. and Oscillator Li

2、ne-up Frequency1400 K. C. Only LiLI 1 ClCI 6.1s-10 Pupa 1W RA 2 MASS1.1L4 K01A601 O ALGOMA* WO41.40110 11=0124110. tt Fla; calica 164UCU PPM ays:. C.1/ HMS 50005 PiIf 6000e 1/0000/6 Alignment Procedure With tuning condenser fully meshed, set dial so that end calibration coincides with pointer. STEP

3、CONNECT HIGH SIDE OF TEST OSC. TO - TUNE TEST OSC TO - TURN RADIO DIAL TO - ADJUST THE FOLLOWING FOR MAX. OUTPUT 1 1st Det.Grid in series with .01 mfd 175 kc quiet Point S z P of 1st I -F Trans. 2 Antenna in series with 200 mmfd 1400 kc140 Osc.,Det. and R -F Trimmers on gang condensers CI I mete poe

4、n / i.PAP04las 10566 Pt CM 160 Mitre L 10 mom W-4111 le 52e/ ala teas O U. WftWO. ,10000. 16011.1 Mee. /SSip. TtKAA7 TrLit 3 1.690e S I,II -1. 1.101116 Pa1lisJ. awes 0104 , :.a. . laSSO ISMS MOO so 11 PM WA O. all trop. .2160. al Melia WA.* PIMPWi1w .1116 MP WOO. tam -Schematic Wiring Diagram RADIOT

5、RON SOCKET VOLTAGES All Voltages Measured at Maximum Volume with No Signal Imp cued on Input.120 Volt 60 CycleA.C. Source Used Radiotron No. Cathode or Fila- ment to Control Grid Volta Cathode or Filo- went to Screen C rid Volta Cathodeor Filamentto Plate Volta Plate Current M. A. Heater or Filament

6、 Volts - 1.R. F. RCA -584.51002456.02.37 2.Oscillator RCA -56-604.52.37 3.First Detector RCA -Ml13.0902351.32.37 4.I. F.RCA -584.51002456.02.37 5.Second Detector RCA -5618.0-2301.02.37 6.Power RCA -24716.525024030.02.37 7.Rectifier UX-280370VoltsR.M. S.eachplate70.05.0 RCA VICTOR DIVISION OF RADIO C

7、ORPORATION OF AMERICA, CAMDEN N. J., U. S. A 收音机爱 好者资料库 RadioFans.CN PAGE 1.99-A R 70 -aaUM- l-11 INoUV% moo- INTERNAL CONNECTIONS Of 2.11LF TRANSFORMER 501- INTERNAL CORRECTIONS OF lo L F. TRANSFORMER -Loudspeaker Wiring am awsaav- -MEDIMOM- INTERNAL CONNECTIONS OF INTERSTALE TRANSFORMER REPLACEMEN

8、T PARTS (Replacement parts may be purchised From authorized Distributors or Dealers Only) Stock Nn. DESCRIPTION RECEIVER ASSEMBLIES 2532Capacitor -230 mmfd.-Package of 5 2746Socket-Dial lamp socket 2747Cap-Contact cap-Package of 5 2749Ca picAtor-2,400 mmfd 3048Resistor -500,000 ohms-Carbon type-IS w

9、att-Pack- age of 5 3076Resistor -1 megohm-Carboo type-s watt-Package of 5 3077Resistor -30,00 ohms-Carbon type-IS watt-Package of 5 3078Resistor -10,000 ohms-Carbon type-IS watt-Package of 5 3461Coil-Second detector plate choke coil 3462Resistor -2,500 ohms-Carbon type -1 watt-Package of 5 3463Resis

10、tor -6,500 ohms-Carbon type -1 watt- Package of 5 3464Resistor -70,000 ohms-Carbon type-IS watt-Package of 5 3469Resistor -2,500 ohms-Carbon type -1 watt-Package of 5 3470Resistor- 6.500 ohms-Carbon type -1 watt-Package of 5 3471Capacitor -0.025 mfd 3472Capacitor -0.0024 mid. 3490Screw assembly-Chas

11、sis mounting screw assembly com- prising 4 screws, 4 washers and 4 spacers -1 set 3495Capacitor -320 mmfd 6142Resistor -6,000 ohms-Carbon type-IS watt-Package of 5 6192Soling- 3 gang tuning capacitor drive cord tension spring -Package of 10 6288Knob-Station selector-Volume control or tone control kn

12、ob-Package of 5 6298Cord - 3 gang variable tuning capacitor drive cord-Packs age of 5 6300Socket- 4 prong Radiotron socket 6303Resistor -20,000 ohms-Carbon type-IS watt-Package of 5 6312Capacitor -650 mmfd.-Oscillator series-Package of 5 6318Resistor-I0,000 ohms-Porcelain type -20 watts 6372Volume c

13、ontrol 6373Coil-fl. F. coil complete. 6374Coil-Detector and oscillator coil Stock No. DESCRIPTION 6375Transformer-Second Intermediate frequency transformer. 6376Transformer-First intermediate transformer 6377 Shaft-Tuning capacitor drive shaft with one flat washer and two C washers 7484Socket-UY typ

14、e Radiotron socket 7485Socket-Radiotron 6 contact socket 7501Capacitor -3 gang variable tuning capacitor complete with mountingscrews. 7510Shield-Radiotron tube shield-Maroon finish 7522Tone control 7557Scale-Dial and dial scale 7558 Transformer-Interstage audio transformer in metal con- tainer 7559

15、 Capacitor pack-Comprising one 0.05 mfd., one 0.5 mfd., one 10.0 mid., one 8.0 mfd., one 0.3 mfd. one 1.0 mfd. and three 0.1 mfd. capacitors in metal container 7560 Transformer-Power transformer -105-125 volts -50-60 cycles 7570 Transformers-Power transformee-105-12S volts -25-40 cycles 7571Transfor

16、mer -200-250 volts -50-60 cycles REPRODUCER ASSEMBLIES 3005 Screw assembly-Comprising 4 screws, 8 nuts, 4 washers, and 4 eyelets-Package of 1 set 6184 Board-Terminal board with 3 terminals-Package of 5 6378TransformerOutput transformer 8920Ring-Cone retaining ring 8935 Cone-Reproducer cone complete

17、with voice coil-Package of 5 9422 Coil assembly -Comprising field coil, magnet and cone support CABINET ASSEMBLIES 6113 Foot-Felt foot-Package of IS 7437Escutcheon-Tuning selector escutcheon PARTS SPECIAL FOR NURSERY MODEL 3402Knob-Blue knob 3493Knob-Red knob 3494Knob-Orange knob X194Emu teheon-S tt ion selector escutcheon-Red finish 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN