RCA-Victor-Co-Inc-RC-455 电路原理图.pdf

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1、PACT 522-C MODELS BP -55, BP -56, and BP -85 Chassis No. RC -455 Five -Tube, Single -Band, Battery or House Current Superheterodyne Receiver Electrical and Mechanical Specifications Frequency Range 540-1,600 kc Intermediate Frequency RCA TUBE COMPLEMENT (1) RCA -1A7 -GT lst.-Det.-Osc. (2) RCA -1N5 -

2、GT I -F Amplifier (3) RCA -1H5 -GT 2nd-Det., A -F, and A.V.C. (4) RCA -1T5 -GT Output (5) RCA -117Z6 -G or 3525 -CT Rectifier LINE CURRENT SUPPLY 110 to 125 volts, AC 50 or 60 cycles, or DC BATTERIES REQUIRED A one 6 volt dry plug-in type (Eveready No. 747 or equivalent) B two 45 volt dry plug-in ty

3、pe (Eveready No. 482 or equivalent) CURRENT CONSUMPTION A, 0.05 ampere-B, 10.5 milliamperes full power; 6.0 milliamperes save power POWER OUTPUT Undistorted Maximum 0.17 watt LOUDSPEAKER Type 5 -inch permanent -magnet dynamic Voice -coil Impedance 4.5 ohms at 400 cycles 455 kc 0.125 watt Height Widt

4、h Depth Cabinet Dimensions (inches) 10 13 5 Weight-(Net) less batteries 8b pounds With batteries 15 pounds Tuning Drive Ratib 6 to 1 The following models comprise the B P-55 series. All contain the RC -455 chassis. B P-55 Light Cloth BP -56 Dark Cloth BP -85 Leatherette Replacement Parts Insist on g

5、enuine factory -tested parts, which are readily identified and may be purchased from authorized dealers STOCK DESCRIPTION STOCK DESCRIPTION CHASSIS ASSEMBLIES 34473 Resistor -2,000 ohms, 10 watts (R12) (RC -456) 12312 Resistor -3,300 ohms, watt (R11) 12412 Resistor -47,000 ohms, watt (R2) 13001 Capa

6、citor -8.2 rnrnfd. (C25) 12264 Resistor -220,000 ohms j watt (Rl) 30949 Capacitor -58 mmfd. (C8, C9, C11, C12) 13730 Resistor -1 meg., watt (R7) 13057 Capacitor -80 mmfd. (C8) 12679 Resistor -2.2 meg., j watt (R5, R8, R15). 12720 Capacitor -100 mmfd. (C13, C14, C24) 14681 Resistor -6.8 meg., watt (R

7、3. R4, R8) 12635 Capacitor -1,000 mrpfd. (C16) 31319 Socket-Tube socket 34459 Capacitor-.0025 mfd. (C17) 34487 Switch-Power selector switch (S1) 33584 Capacitor-.005 mad. (C23) 34486 Transformer-First i -f transformer (L2, L3, C8, 4937 Capacitor-.01 mfd. (C7, C15) C9) 32787 Capacitor-.05 mfd. (Cl, C

8、10, C18) 34466 Transformer-Second i -f transformer (L6, L7, 4839 Capacitor -0.1 mfd. (C22) C11, C12) 34472 Capacitor-Electrolytic comprising 2 sections of 20 mfd. each, and 1 of 200 mfd. (C19, C20, C21 SPEAKER ASSEMBLIES (RL -85-1) 34965 Capacitor-Electrolytic 20 mfd. (C26) 34468 Coil-Loop loading c

9、oil (L1) 32907 Cap-Cone renter dust cap 34877 Coil-Oscillator coil (L4, L5) 34554 Cone-Speaker cone, voice coil, and center sus - 34464 Condenser-Variable tuning condenser (C2, C3, pension, (L8) C4, C5) 34555 Transformer-Output transformer (Ti) 34465 Cohtrol-Volume control and power switch (R13, S2)

10、 MISCELLANEOUS ASSEMBLIES 34469 Indicator-On-Off indicator 34471 Indicator-Station selector indicator 34476 Dial-Dial scale and mounting plate 5133 Pin-Pin on loop leads 34611 Handle-Carrying handle for Model BP -55 and 34470 Plate-Power selector switch indicator plate BP -85 34689 Plug -2 -contact

11、male plug for battery cable.: 34812 Handle-Carrying handle for Model BP -58 32641 Plug -3 -contact male plug for battery cable . 34015 Knob-Tuning, volume control or voltage switch 12414 Resistor -560 ohms, I watt (R14) knob 30499 Resistor -470 ohms, j watt (R10) 31193 Lead-Antenna lead-approximatel

12、y 25 ft. long 14720 Resistor -1,000 ohms, e watt (R9) 34556 Loop-Complete loop and support Resistance Power Cord: In Models BP -55, -56, -85 that use a 35ZSGT rectifier, the 545 -ohm resistance power cord is Stock No. 35311. Distortion or Low Volume: Distortion or low output on these models may be r

13、elated to premature loss of emission of the 1T5GT output tube. This condition de- velops when the receiver is used on an AC or DC power supply, particularly where the line voltage is comparatively low. The 1T56a now incorporates an over -sized filament that elimi- nates the trouble. Chassis and Spea

14、ker Mounting: Add Stock No. 85297 Mounting - Chassis and speaker mounting screw and cap Hum: Hum in Models BP -55, -58, -85 is generally due to an intermittent or open common connec- tion between the electrolytic and chassis. Solder securely or add a jumper from the electrolytic ground lug to lance

15、on chassis. 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 PAG. 5 23-C BP55, BP56, BP85 BOTTOM VIEW OF TUBE SOCKETS LOOP /1 GREEN Cif 3 LI CI YELLOW 05 1F 512K- G b C23- .0051 MFD. R15 2-z MEG. lA7GT 15T DET-O5C. 1 N5GT I. 1H5GT. 2N DE T. -A.F. -A

16、V. C. CZ2 0.1 MFD. 90V. L2 U I Cl Cfj= .01 56MM6 MFD F _ C(o R2 60 47.000 MM. BLUE L4 LS C25 65 o9.5 aM #4 CS p T L3 27 tAaA 90V. 56 NNE C 1T C15 F # MFD. R4 6.5-NVM EG RS 2.2 MEG. R9 68 MEG. D 12 90V WANE CII 56 MME. 1 C13 = 100 MMF C15 + .01 tiFD. R IS I M EG - VOL. CONTROL iT5GT OUTPUT y czr MFOD

17、. Re 2.2 MEG. RE:D 117Z6G_ 25v. RECT CONNECTIONS FOR RESISTOR. POWER CORD IN MODELS USING 35 85 GT RECT. C18 .05 MFA lily. A. C C 191p 20 W R DRAWN IN PO5!1 POS.1 - AG -DC. POS2 -GATT. CORR. SAVER POS.3 -BATT. MAX. OUTPUT R II 3300.n. WHITE R C20 1000 RIO 470 n SOME SETS HAVE CONNECTIONS SHOWN BROWN

18、 I AHD NO CONNECTIONS MARKED x To 6V ? 9g0V. 1 P 84744-5 SWITCN L R9. BATTERY BATTERY 20 MFQ 1C21 ZOO MFO. lOFr, ODn TO 11.5G-7 FILAMENT 1 ON- OFF SW. SZi ON VOLUME CONTROL YELLOW I RED Schematic Ciri nit Diagram Measurements are made to chassis unless otherwise indicated, with set tuned to quiet po

19、int. Values should hold within approximately t 20/c with rated battery voltage. 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. Test-oscillator.-For all alignment operations, keep the output

20、 as low as possible to avoid a -v -c action. Steps Connect the high side of test- oscillator to- Tune test-osc. to- Turn radio dial to- Adjust the follow - ing for max. peak output- 1 1A7GT 1st-Det. grid cap, in series with .01 mfd. 455 kc Quiet point at 1,600 kc end of dial L2, LS, L6, L7 (1st and

21、2nd I -F transformers) 2 1,600 kc .1,600 kc C4 osc. 3 radiated signal near 600 kc signal frequency L1 4 radiated signal near 1,400 kc signal frequency C3 5 radiated signal near 600 kc signal frequency L1 For steps 3, 4, and 5 the chassis must be in the cabinet and the batteries in place and connecte

22、d. L-1 is then reached through the small hole in the cabinet which is normally covered with a small plug located farthest away from C-3 and C-3 is reached through an eyelet in the speaker grille. If a broadcast signal is used it should be weak to avoid a -v -c action. Turning loop to minimum pickup

23、position will sometimes be helpful. If no broadcast signal is available connect test oscillator output to a suitable radiation loop located several feet away from receiver. L -i DOTTOM)45sKC L-TTOD) 455KC L-1(50TTOM)4ss KC C5 C-4 L -i L-5 (TOP) 455 KC 1400KC 1400 KC 4500 KC BATTERY - INSTALLATION 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN