RCA-Victor-Co-Inc-112A 电路原理图.pdf

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1、Electrical Specifications Voltage Rating 200-230 AC or DC Frequency Rating (AC) 50-60 Cycles Power Consumption AC 60 Cycles -105 Watts -DC -85 Watts Number and Types of Radintrons 1 RCA78, 1 RCA -6A7. 1 RCA77, 1 RCA -43, 1 RCA -12Z3 -Total. 5 Undistorted Output 1.5 Watts Frequency Range 540 KC -1500

2、 KC Alignment Procedure With tuning condenser fully meshed, set dial so that 530 calibration coincides with pointer. STEP 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 4 watt

3、 (114)- Packageof 5 717Cap -Contact cap -Package of 5 3700Resistor -4511,000 ohms -Carbon type -X watt (116)- 710Capacitor -.60 in in GI. (C15) Package of 5 1711Capacitor -80 ottinfil. (C0) 363211 esistor-500 ohms -Carbon type -1 watt ( 118) -Pack - 712Capacitor -400 mmfd. (C1.0 age of 5 373ICapacit

4、or -1150 ru in fd. (C8) 2963Resistor -8,000 ohms -Carbon type -1 watt t(1110)- 1701Capacitor -0.01 mid. (C19) Package of 3 1888Capacitor -(.0S turd. (C16) 6114Resistor -20,000 011111P -Carbon type -1 watt (R11)- 016Capacitor -0.03 mfd. (C21/I Package of 5 0/17Capacitor -0.25 lad. (C17) 3911.Resistor

5、 -30 ohms -Flexible type (1113) 1753Capacitor -Cprising i.0 0.1 tad. and one 0.25 tad. 47111Resistor -203 ohms -Porcelain tj pc -111151 (Cl2, C13, (:27) 3015Resistor -320 ohms -Porcelain type-(R R14) R 1.,0 win a 6621Capacitor -Comprising one 0.05 andone0.1tail. (CI, C25) 3581Ring -Antenna R. F. or

6、oscillator coil retaining ring - Package of 5 6728Capacitor -Cpr isi i ig one1.0 mfd., OM, 10.0 mfd. and two 8.0 nib!. (1.111. C26, C28, C31) 3993Screw -No. 6-32 square head set screw for condenser dial and drive assembly -Package of 10 6726Coil -Choke coil (1.0) 7065Screwdriver -Insulated screwdriv

7、er and socket wrench-. 6519Coil -Antenna coil (1.1. 1.21 For I. F., R. F. and oscillator condenser adjustment. 6521Coil-Oscillator ,nil (1.5. 1,6) 3623Shield -Antenna R. F. or oscillator coil shield 6520Coil -R. I. coil (1.3. 1.4) 3951)ShieldIt adiotron shield 6723Condenser -3-gang variabletoiling c

8、ondenser (C2, C3, 4700Socket -Dial lamp socket C4, C5, C6, C7) 3859Socket -4 -contact Radiotron socket 4701Dial -Tit tt i ii g condenser dial and drive assembly 6676Socket -6 -contact Railiotron socket 4703Escutcheon -Stuselector escutcheon 7.185Socket -6 -contact Ratliiitron socket -Second detector

9、 4119Knoli-Viiltime control or station selector knob -Package of 5 6727Transformer -Intermediate frequencytransformer(L7, 1.8. Cl(. CIO 3602Resistor - 60.000 ohms -Carbon type -Lf watt (11)- 4702Volume control (1112, SI) Package of 5 3033Resist or -1megolimCarltype - Liwait(R2)-* REFER TO SCHEMATIC

10、Package of 5 6250Resistor -4000 ohms-Carlon)type -3iwatt(117)-REPRODUCER ASSENI 111.1 ES Package of 5 6303li esio or -20.000 olltnri -Carbon type - jiwatt (1(3)-7815Coil -Field roil magnet and cone support (1.11) Package of 59192Cone -Reproducer cone (1,10) -Package of 5 :3591II esist or -50.000 ohm

11、s -Carbon type -9watt (115)-7817Reproducer complete Packatte of 57816Transformer -Output transformer (TO 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 C3 5-50 MAWS CZ .11-405 More. TD CATLINAL cows. 1:1;41f0. CM/4.3313 lr C 2 D Mr RCA ,e srf AKER

12、 FILLS c 5 coC Kt .330 .150140- 2 20 AMMO Cl P40 IMMFOC11 ,0.401 ,V.- 1 Mmr0 i13- 10 Iis art a asc 0 I I 11.1la,. / / DCA- 61.1 1410 43.3 , L C25 01 mr1) NOTE:R15 320 ohms - Mode 1 112. 205 ohms - Model 112A. 20,000 130 SECTMw sit SOC C rs 4 taro Schematic Diagram 5,sf r t.1; RADIOTRON SOCKET VOLTAG

13、ES *Measured at 220 Volts A. C., 60 cycles (Maximum Volume Control) C.6 31212 OUTPUT RCA 43 Radiotron No. Cathode to Control Grid, Volts l)C Cathode to Screen Crid, Volts DC Cathode to Plate. Volta DC Plate Current M.A. heater Volts RCA -78 R. F.3.0 100 1655.56.0 6.0 RCA -6A7 Oscillator letDetector

14、-,- 1451.7 3.0 100145 2.5 RCA -77 2nd Detector Plaeand Bias Supply 163 Volts- 6.0 RCA -43 Power21.0 140 I13035.0 25.0 RCA -12Z3Rectifier220 HMS- 12.0 *Voltages with 220 Volts D. C. supply will be approximately 10 per cent less than tabulated values - 131.1.12 4esi 1;43239 c IP - ate SEA 0 13 5a ca. 211111211- IWO e. INTERNAL CONNECTIONS OF LF. TRANSE C31 eras. C 26C 26 Owe-&m0. C16 10 P121117 4 INTERNAL CONNECTIONS OF CAPACITOR PACK 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN