RCA-Victor-Co-Inc-R-71-B 电路原理图.pdf

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1、PAGE 307-B MODELR71 B Eight -Tube, Battery -Operated, Superheterodyne Receiver ELECTRICAL SPECIFICATIONS A Batteries Required Eveready Aircell A Battery B Batteries Required Four 45 Volt Blocks, Preferably of Heavy Duty Type A Battery Current 0 48 Amperes Average B Battery Current 18 M. A. Type of C

2、ircuit Super -Heterodyne with A. V. C., Class B Output Stage and Compensated Volume Control Type and Number of Radiotrons 3 RCA -234, 1 RCA -232, 4 RCA -230 -Total 8 Number of R. F. Stages One Number of I. F. Stages One Type of Second Detector Pentode, Combining Detector, A. V. C. and Audio Amplific

3、ation Number of Audio Stages Two Undistorted Output 1.00 Watt -Her FC -Th4 17:1111 RICA I WI- I 1111311- -14/711- -11-Vikfl:FFNO II r/V11114 -i611ME. .0-1-4.-1111 - INTERNAL CONNECTIONS OF BY.PASS CAPACITOR 1-114 11,44 INTERNAL CONNECTIONS OF hi I. F. TRANSFORMER 1-111-10 46,II INTERNAL CONNECTIONS

4、OF TINI.F.TRANSFORMER 1111113 1-13 IKTERSTAGE AUTO-TRU SFORMIER CONNECTIONS C-73 1011 C-71 1115 WI. 1-3 IN, 1-4 IN 1-7 INN I1-1-11 IryW 1-13 a 1-2 ./1. ii i 1-1411111111116. RESISTOR BOARD CONNECTIONS -1111111- NOE 11 nurr- ILK - INTERSTAGE TRANSFORMER CONNECTIONS -10 7-3 NICK- Rltl- ROUND i C=11 4M

5、 11-1- 500r500 WW1 In OCT. 4CAt32-Iry C-3 C-10 15-75670 WIT 111,11. 7-.- 8=3 2 11 -V ; C-3C-7C-11C-12 1 111114-504-5013-325 010F1LOWL104171 03C. ICI -230 E.L 6 I? riAtAL ICA-234 C-14C 15 L5-75 110-230 60430. 131070., 11-14 506300 C-16 .05 r17 140-720 0.111170. 0. 4 ASY C-18. 15-75 WM. 0 C-19 400 Mew

6、l. OCT A ANC tot A FOAM RCA -134 r -8-2-X/ C-23R-18zla. C-4 .75 N70. wr zit Ku- -.I I iLz TO A I I.8 A fiLANC1173 WPM J 111-4 I C-80 -II-113 25 AWL3000A401/20.if.000A I R-3R-5 500-% MOM R-4 760 1%tc,. 2-15 A 8-16 -Ca VI CLiar6 ,cse71 3/TNg,-10 5 0 L-13 / -C-2t 1200 m ._._kMM/IIr I C-22 12-47 1200 10

7、.0004 W10 R-9 !AEG. C-20 JOS WV. C-24 225 INP s 200000n 511-71011 1 C C-13 IO.M13. 11-7 65000 .5 11311. C 005 WO. Ivr4.10.3 273 230 C-26 125 WL -mar, 4 -Schematic Wiring Diagram of R -71-B 7-2 .4.c=r1 6 - 137%, 005 bs(1.1,4. A w 收音机爱 好者资料库 RadioFans.CN PAGE 309-B R71 B REPLACEMENT PARTS Insist on ge

8、nuine Factory tested parts, which are readily dentified and may be purchased From authorized dealers Stock No. DESCRIPTION ListStock No. DESCRIPTION List RECEIVER ASSEMBLIES6312Capacitor - 650 mmfd. capacitor - 2012Capacitor -1200 mmfd. capacitor Package of 5 2747Contact cap-Package of 5 6317Capacit

9、or -0.05 mkt. capacitor 2749Capacitor -2400 mmfd. 6323Shaft-Tuning condenser drive shaft 2962Capacitor -0.005 mfd. capacitor with one flat washer and two C washers-Package of 2 3003Cushion-Sponge rubber chassis sup- port cushions-Package of 4 6326Transformer - 1st intermediate fre- quency transforme

10、r 3033Resistor -1 megohm-Ri watt-Car- bon type-Package of 5 6327Transformer - 2nd intermediate fre- quency transformer 3043Resistor -0.8 ohm-Wire wound 6328Volume control -Complete with mount - 3085Capacitor -400 mmfd. capacitor ing nut 3088Knob-Operating switch knob-Pack- age of 5 6329Tone control

11、-Complete with mount - ing nut 3238Screw-Set screw for switch knob No. 6330Scale-Tuning dial scale 3088-Package of 10 6331Shield-Radiotron shield 3252Resistor - 100,000 ohms - t4 watt - Carbon type-Package of 5. 6332Switch-Operating switch 3358Resistor -3,000 ohms-,14 watt-Car- 6333Cable-Battery con

12、necting cable bon type-Package of 5 7062Capacitor-Adjustable trimming capac- itor -15 to 70 mmfd. 3381Resistor -10,000 ohms -3d watt-Car- bon type-Package of 5 7439Drum-Dial drum with set screws 7501Capacitor -3 gang variable capacitor, 3382Resistor -750 ohms-watt-Carbon type-Package of 5 7524 less

13、drive shaft and drum Coil-Detector and oscillator coil corn - 3383Resistor -500 ohms -34 watt-Carbon plete with mounting bracket type-Package of 5 7525Capacitor pack-Comprising one 8.0 6176Escutcheon-Operating switch escutch- eon-Engraved OFF-ON-Pack- age of 5 mfd., one 0.05 mfd., one 0.1 mfd., one

14、0.5 mfd., one 0.25 mfd., one 0.75 mfd., two 0.005 mfd. and one 0.025 6186Resistor - 500,000 ohms -Ri watt - mfd. capacitors in metal container. Carbon type-Package of 5 7526Transformer-Audio input transformer. 6192Spring-Condenser drive cord tension spring-Package of 10 7527Transformer-Audio transfo

15、rmer pack comprisinginterstage andoutput transformers in metal container 6241Resistor - 140,000 ohms - 34 watt - Carbon type-Package of 5 CABINET ASSEMBLIES 6212Resistor -2 megohm-X watt-Car- (Prices furnished upon request) bon type-Package of 5 6113 Felt-Cabinet felt foot-Package of 15 62 44Resisto

16、r - 700,000 ohms - 34 watt - Carbon type-Package of 5 7523Escutcheon-Station selector escutch- eon 6245Resistor - 65,000 ohms -14 watt - Carbon type-Package of 5 6279Resistor - 15,000 ohms - 34 watt - Carbon type-Package of 5 REPRODUCER ASSEMBLIES 6285Choke coil -2nd detector plate choke coil 2975Ri

17、vet-Eyelet rivet for mounting cone -Package of 100 6288Knob-Station selector, volume control or tone control knob-Package of 5. 6166Board-Terminal board with two ter - minals-Package of 5 6298Cord-Tuning condenser drive cord-8702Ring-Cone retaining ring Package of 5 8828Bracket-Cone bracketand magnet 6300Socket -4 prong Radiotron socketassembly 6308Coil-R. F. coil complete with mount- ing bracket 8921Cone-Reproducer cone complete with voice coil-Package of 5 收音机爱 好者资料库 RadioFans.CN