RCA-Victor-Co-Inc-95T 电路原理图.pdf

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1、iAH,E. 595-C MODELS 95T and 95T1 Five -Tube, Single -Band, A -C, Superheterodyne Receiver MODEL 95T1 Technical Information and Service Data: Model 95TI is identical to Model 95T ex- cept for cabinet styling. All Service Data for Model 95T apply to Model 95T1. Fidelity Change: Capacitor C-15, connect

2、ed across the output transformer primary circuit, may be increased from .015 mfd. to .025 mfd. if accentuation of the lower audio frequency range is desired. Some production instruments will have this change already applied, therefore, circuit -note diagrams should be revised accordingly. The .025 m

3、fd. capacitor is available as Stock No. 4870. Microphonic Howl: In order to minimize any howl that may occur at high volume, on very strong stations, the blue lead which runs from the 6A8 oscilla- tor plate terminal to the oscillator coil should be cut as short as possible and kept separated from th

4、e chassis, tuning condenser and other leads. Replacement Cone for Loudspeaker: The replacement cone No. 30940 being sup- plied for the 95T and 95T1 loudspeaker has a modified type (circular) of center suspension providing 360 degrees of support as compared to the original two point spider. When usin

5、g the present cone on original speaker, it will be Electrical and Mecha Frequency Range 540 to 1.750 kc R -F Alignment Frequency 1,500 kc (ose., ant.) Intermediate Frequency 455 kc RADIOTRON COMPLEMENT (1) RCA -6A8 First-Det., Ose. (2) RCA -6K7 Intermediate Amp. (3) RCA -607-G Second-Det., A -F, A.V

6、.C. (4) RCA -6K6 -ti Power Output (5) RCA -5Y3 -G Rectifier Dial lamp Mazda No. 46, 6.3 volts, 0.25 amps. POWER OUTPUT (125 -volt, a -C supply) Undistorted 1.0 watt Maximum 2.0 watts Alignment Cathode-ray Alignment is the preferable method. Connections for the oscillograph are shown in the chassis d

7、rawing. Output meter alignment. If this method is used, connect the meter across the voice coil, and turn the receiver volume control to maximum. Test -oscillator. For all alignment operations, connect the low side of the test -oscillator to the receiver chassis, and keep the output as low as possib

8、le to avoid a -v -c action. For additional details, refer to booklet RCA Victor eceiver Alignment. Pre-setting dial. With gang condenser in full mesh, move dial pointer to coincide with horizontal lines. This is a friction adjust- ment. Model 95T necessary to add a metal center suspension plate with

9、 a felt washer between it and the speaker frame. The metal suspension plate and the felt washer are provided with the No. 30940 cone. nical Specifications LOUDSPEAKER Type 5 -inch Electrodynamic Voice -coil Impedance 3.4 ohms at 400 cycles POWER SUPPLY RATINGS Rating A Rating B Rating C 105-125 volt

10、s, 50.60 cycles, 50 watts 105-125 volts, 25-60 cycles, 50 watts 105-125/200-250 volts, 50-60 cycles, 50 watts Cabinet Dimensions Chassis Base Over-all Chassis Height Weight (net) Weight (shipping) Operating Controls Procedure Height Width Depth 8 inches . 11 inches . 5-15/16 in. 2t inches . 10.1/16

11、in. . 411 inches 6j inches 9j pounds 10j pounds (1) Power Switch-Volume, (2) Tuning Steps Connect the high side of test-oscil- lator to- Tune tent- ose. to- Turn radio dial to- Adjust the follow - mg for max. peak output No. 1 6K7 IF grid cap, in series with .01 mfd. 455 kc Quiet point between 550-7

12、50 kc L7 and LB (2nd I -F Transformer) No. 2 6A8 1st -de. grid cap, in series with .01 mfd. 455 kc L5 and L6 (1st I -F Transformer) No. 3 Antenna lead, in series with 200 mmfd. 1,500 kc 1,500 kc (Top of 1 in 150) C6* (oscillator) C3 (antenna) * Trimmer C18 on gang condenser should be screwed clockwi

13、se for maximum, capacity before adjusting C6. Replacement Parts Insist on genuine factory -tested parts, which are readily identified and may be purchased from authorized dealers. STNo.OCK DESCRIPTION STOCK DESCRIPTION RECEIVER ASSEMBLIES 5029 Resistor -56,000 ohms, watt (R2) 30892 Bracket-Station s

14、elector dial scale holder with 12199 Resistor -270,000 ohms, watt (R7) ohms, Resistor -2.2 11350 12723 indicator shaft and drive bearingassembly.12179 Ca rid connector cap14114 Capacitor-56G Mmfd. (C4) 14114 11196 Resistor -2.2 assembly RB) Meg., watt (R4,watt Socket-Dial lamp socket Socket-Radiotro

15、n socket 30904 Capacitor -100 Mmfd. (C7, C8, C9, C1t). 30631 Spring-Indicator drive cord tension spring 13003 Capacitor -180 Mmfd. (C12) 30902 Transformer-First I.F. transformer (L5, L6, 5107 Capacitor-.0025 Mid. (C14) C7, C8) 4858 Capacitor-.01 Mfd. (C1S) 30903 Transformer-Second I.F. transformer (

16、L7, L8, 11315 Capacitor-.015 Mfd. (C15) C9, C10) 4886 Capacitor-.05 Mfd: (C11) 30889 Transformer-Power .transformer 105-125 volts, 30899 Capacitor -0.1 Mfd. (C1) 25-60 cycle (T1) 30898 Capacitor-Comprises two 5 Mfd. sections (C16, Coil-Antenna L2) 30888 Transformer-Power transformer 110 and 220 volt

17、s, 50-60 cycle (T1) 30894 30895 30891 Volume Control and power switch (R5, Si) coil (L1, Coil-Oscillator coil (L3, L4) 30890 Condenser -2 -gang variable tuning condenser REPRODUCER ASSEMBLIES (Speaker 84202-2) 30877 30905 (C2,dndi C5, Cr, C10)30940 Cord-Indicator drive cord Core-Adjustable core for

18、I.F. trans- 30939 Cone-Reproducer cone and voice coil L9 eP ( ) Reproducer complete formers 30941 Transformer-Output transformer (T2) 30893 Dial-Station selector dial scale and lamp bracket assembly MISCELLANEOUS ASSEMBLIES 30896 Indicator-Station selector indicator pointer 30901 Crystal-Station sel

19、ector crystal 5226 Lamp-Dial lamp 30863 Knob-Station selector or power switch knob. 11361 Resistor -68 ohms, I watt (R10) 30886 Screw-Chassis mounting screw and washer. 5164 Resistor -560 ohms, .1 watt (R9) 30900 Spring-Retaining spring for knob Stock No. 8072 Resistor -33,000 ohms, watt (R3) 30863

20、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 rA L 596-C 95T, 9511 n o LB SEC ADJ 455 KC ANT,-_T_ 1/2+POETA.E COIL T T 1/ I T2 12 I m 1 I TRANSY tt F I U ITRANSI Q 3 L1 t L6 IV DET. S n EC. ADJRECO en 05C. SsC I.F. Figure 1-Radiotron and Trimmer

21、Locations VOL- CONTROL POWER SWITCH 6( 3V AC1 OUTPUT 6K6 G )4v-3 95T P e.n2D o -210V. -OV. 6 3V 16V.- (A C1 CATHODE CURRENTS NO. 1. SOMA. NO. 2. 9.0 M.A. NO. 3. .0.36M A. N0. 4 . 23.0M A. NO 3. 42.0M.A. . CANNOT BE MEASURED AT TUBE SOCKET VERTKAL.HI TO -F415 TER OSCILLOGORISH CATHODE RAY VERTICAL -0

22、 TO CHASSIS CON 2N -DET AF Q AVG. v 212D f.F TRANS. 3 z - -100V SV (ACl 290V_- _ RECT 5Y3 -G ELPT - r I. 6K7 CG z _3 uwV 15tL Fr- TRANS . C17 L16n 1111 1111 U7 L5 PRI. BPS. 455 K.C. C18.4 ADJUST IOR MA%, CAR Yg DET-OSC. 6A8 73v. - C2 CS S.C3 ANT 15001C GANG CONDENSER c 115001t. 210V. - (95T) 6Q1G 3

23、C2 C3 1 -400 3-15 M MMF. RE 2 C5 1 10-190 MMF Cl I ele 15 rem F. / 8 - h1FD. / ADJUST FOR MAX. CAP. OUTPUT BOTTOM VIEW - REAR OF CHASSIS Figure E-Radiotron Socket Voltages and Location of Parts * Note: Values with star (*) are operating voltages. Values not starred are actual measured voltages. Meas

24、urements made to chassis unless otherwise indicated. Measurements made with set tuned to quiet point, volume con- trol at minimum, using 1,000 -ohm -per -volt meter, having ranges of 10, 50, 250, and 500 volts. (Use nearest range above the specified measured voltage.) Values should hold within appro

25、ximately 20% for 117 -volt 60 - cycle supply. Precautionary Lead Dress 1. Keep lead from high side of volume control (contact 3) away from capacitor in plate circuit of output tube. 2. Keep dial lamp leads away from 6Q7 -G grid lead. 3. Keep a -c leads away from volume -control wiring. 1s- CET. gr O

26、SC 6A8 G C8 MMF. L5 L6 le* 18n R3 33,000 I.F. BOTTOM VIEW 6K7 OF SOCKETS F ll - c C9 a ; C10 C12 IOU T p 100 MMF.180 MMF D 11= MMF. 1 VOL. CONTR. R9 R10 56On 694 7.l CI1 .05 MFO. R4 2.2 MEG. T _J O 18.4A-6Os0 25.B4-25ti= 13B04- 6OA. /18604.-25. GREEN ED GREEN BROWN/ BLACK BROWN RED C BLUE TO HEATERS

27、 i.451 DIAL LAMP BLL.BLUE 5 BROWN FIELD BROWN L;1 BROWN) 190On CI6 5MFD. RECT. 5V3 -G 3 B 2 RB 22.0,0004 C13 .01 M FD. 22DET.,A.F.,kA.V.0 6QT-G S 2 MEG. R7 C14 .0025 MOD. / OUTPUT 6 K 6-G BLUE C15 .015 L9 MFD. TZ A 47O 270,000n ,000n 95 T P-84201-3 C17 5MFO. RED 34.8. S I b 3 DiRcf roer filament N PmarA 1 C n,an VOltay RED SLACK cK A A.n TOtOtWMiOW In Pmary 2 a- I D dVolt-Rcorrnuttn r, ! Ku .KAR BLUE Universal Power Transformer Primary Connections for 110 and EEO volts j4. Z,Vat A 11 ,:3412,12 Figure 3 -Schematic Circuit Diagram 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN