RCA-Victor-Co-Inc-RADIOLA-48 电路原理图.pdf

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1、4-GANG CONDENSER RCA RADIOLA 48 View showing method of checking position Can a condenser adjustment positions, of dtai. y 收音机爱 好者资料库 RadioFans.CN PAGE 60-A MODELS R-14, R-15, RE -17, 42 &48 VICTOR MODELSRADIOLA VOLUME CONTROLDIAL RADIOLA 42 STATION SELECTOR OPERATING SWITCH TONE CONTROL VOLUMEDIALST

2、ATION CONTROLSELECTOR ElectricalSpecifications RADIOLA 48 OPERATING SWITCH Voltage rating105 - 125 Volts Frequency rating25/40 and 50/60 cycles Power consumption Radio only) Power consumption (Model RE -17) Type of circuit Type and Number of tubes4 UY 224, 2 UX 245,1 UX 280 Loudspeaker Wattage dissi

3、pation In L.S.Field 115 Watts 170 Watts ACScreen-grid, T.R.F. Elec tro-dynamic 10 Watts,(110 V. 85 M.A.) Undistorted output2.5 Watts Victor Model R-14 is Victor Model R-15 is Victor Model RE -17 is equipment. identical to Radiola 42. identical to Radiola 48. Victor Model R-15 combined with Electrola

4、 record blaying RCA Radiola 42 is a four circuit, tuned radio frequency radio receiver utilizing the chassis and reproducer unit of Radiola 48 together with a tone control. The tone control is mounted on the side directly under the operating switch. It will be noted that a new volume control is used

5、. The antenna section of this unit has a value of 25,000 ohms instead of 50,000 ohms as used in the Radiola 48. This volume con- trol is also being used as a replacement in Radiola 48. The screen grid voltage section has a value of 10,000 ohms and the 12,000 ohm shunt resistor is not used. The 0.005

6、 mfd. con- denser across the plates of Radiotrons UX-245 has been omitted due to the connection of the tone control in the same position.When making replacements of the condenser and reactor unit it will be necessary to clip the two leads that are connected to the .005 mfd. condenser close to the co

7、ntainer.The reason for this is that the replacement unit supplied is suitable for either the Radiola 42or 48. 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 PAGE 61-A R-14, R-15, RE -17, 42 & 48 3.0 SHIELD 4 -GANG CONDENSER., I4-224UY 224U3Y-282.4

8、F. IM029. R.F.N 47- -t4on g Co e2 .11F -30A GROUND ./LEAD ALE GROUNDS ARE TO FRAME AND TO GROUND LEAD .75 MFD. N. IF-. 3.04 -,t 1 MF11 3.011. u9-224 9.DETECTOR 404= 0.1.74 -lira ,=. -1r 17,000 .164FD N. 25425n. 3 4 INTERNAL CONNECTIONS OFINTERNAL CONNECTIONS OF SY. PASS CONDENSERS s.V-MED. NECTIONS

9、OF SY-PASS CONDENSERS 251). 25/1. R. F. CHOKE MOUNTING BOARD CONNECTIONS BY-PASS CONDENSERS ,430,0004 C197v i A Kt=Pa 430,000/1. WRITE AND GREEN 3200 It BLACK .1640.041 LACI, AND GREY RESISTOR MOUNTING BOARD CONNECTIONS RtO TR&CEI IlE ESA VIIOw TAKER INTERNAL CONNECTIONS OF FILTER REACTOR Schematic

10、wiring diagram UY- 224 DETECTOR fr000n d-0010 V 3 4 3 0 2541. 113011. 4 2 MFD. 1_065 9011. -.25 UFO. 200,00011. TOTAL -35 MFD. A25 WV -.1 MFD. 904 9041. 320 IFMFD. - 75 164D. -200,00 ftA 15.000 / TOT -75 MF -.1 LIFO .025 MFD .025 MFD 32004 NYAA TOIMO -GO-, 0 MAI -25- TO ALL FILAMENTS mEATERS AND DIA

11、L LAMP 00.245 POLOWLIEFRi RFIELD COIL CONE COIL j.,1330 .11, 2.5 IL I T3034 AL 1, 4:.)41 PS -Air . i pt 0.1 M 1.5 MFD 211. 1.AFL.11-.1512 .soon 1r IIf ssonToym. 0.1 UFO.JF OPERATING SITCN .-715.11. R-14 IL RADIOLA 42 .025 LIFO. 3 200 it 1.0 MF0.-60 MFD.-25-9 TO ALL FILAMENTS 1204 AVTDT LAMP 0 tt UN.

12、 245 POWER IAMPLIFIER FIELD COIL 1330 IL , 330.11. TOTAL .4 I.5 MFD. ll 11-.N.15n 2.0 54fD.11.2%- .=.30041. V 0 530ILTOTAL O O 105125 VOLT 50.60. A.C. V. 1200. PONER TRANSFORMER CONE COIL 2.5111, :005 MFD. .2.CL 0.1 MFD. OPERATING SWITCH 715A 105-125 VOLT 50.6x A.C. POWER TRANSFORMER Schematic circu

13、it diagram. R-158 RADIOLA 48 .005 MFD., .025 MEP L.6 IUD. 4 .1 MFD. MFD. SIAFD.26- t 1_02 315,000. I HOLE .020 LIFO. ISOMER PRIMARY 4TOTAL -s., EawcW M EN Mel 10104 REEMILVER IllAOL1114 IENE TRACER UM- 280 FILAMENTS NIGH VOLTAGE MErao.an530 II TOTAL KKR WITOI B oNNEORCIR RATERS. FILAMENTS AND re- DI

14、AL LAMP INTERNAL CONNECTIONS OF OUTPUT TRANSFORMER. INTERNAL CONNECTIONS OF CAPACITOR AND COUPLING REACTOR PACK INTERNAL CONNECTIONS OF POWER TRANSFORMER 收音机爱 好者资料库 RadioFans.CN PAGE 6 2 -A R-14 R-15 RE -17 42 & 48 MAGNETIC PICK-UP TERMINAL STRIP FILTER REACTOR POWER. TRANSFORMER OUTPUT TRANSFORMER.

15、 DETECTOR STAGE TO ANTENNA 4-BLAcoe TO GROUNDow DIAL SCALE VOLUME CONTROL A.C. INPUT CORD 25,000.5. SECTION.svOLuhit CONTROL TPA. 10,000.N. -SECTION BRAIDED SHIELD REVISED VOLUME CONTROL WIRING 3.R. F. STAGE 2_ R.F. STAGE - Is! R.F.STAGE CAPACITOR -AND COUPLING REACTOR UNIT -REPRODUCER UNIT Rear int

16、erior cabinet view with shields removed. The Victor Radio with Electrola RE -17 is a combina- tion of the four circuit radio equipment in the R -I5, with the Electrola equipment, less home recording, of the RE -57. A transfer switch controls the change- over from radio to record operation.When the s

17、witch is in the Electrola position, the power detector Radiotron becomes a first stage audio amplifier, transformer coupled, by a change in the grid bias of this tube when a 600 ohm resistor is connected into the grid bias circuit.The screen grid voltage supply to the R. F. tubes is opened during re

18、cord reproduction to prevent the possibility of obtaining both radio and record reproduction simultaneously. Electrola Terminal Strip Radio Chassis Terminal Board, showing Additional Connections for Motor ROO A TIMPIIRAL STRIP MOTS: IT HAT SI !OSAUDCRS/AMY TO PIACI A 1111OLPIORDMR OA OROS N MONO PIS

19、MO SOCIAARION DOOM PORS MOO TAMP stmcn -VNO Al RADIO-11/CR soros! PIER -VP !SPOT TRAAISPORPOR OP ROMA RATIO MR PICIVIJO DIM POOP PROOTORRAIO/1 VOlufAll CONTRA.PICK-UP MAGNETIC PICKUP CONNECTIONS PAGE 63-A Stock No. 2722 DESCRIPTION 2723 2737 2741 2747 2786 2792 2793 2794 279 5 2796 2797 2798 2799 28

20、00 2801 2802 2803 2804 280 5 2808 2807 7054 7066 7 10 5 7106 7 107 7108 710 9 7 110 7 111 Resistor - 55 ohm Mid -tapped filament resis- tor. Switch -Power line operating switch - Toggle type - Package of 5. Escutcheon- Operating switch escutcheon - Package of 5. Idler - For Condenser drive cord - Pa

21、ckage of 5. Cap-Contact cap for Radiotron UY-224 - Package of 5. Spring - Holding spring for Control Switch - Package of 10. Cable- Shielded twin conductor cable - 72 long - Shield 7 long (Antenna and ground leads). Cord -Shielded connector cord - 18-3/4 long. Resistor - 3200 ohms - Carbon type - Bl

22、eeder resistor - Package of 5. Resistor -12,000 ohms - Carbon type - Vol- ume control shunt resistor - Package of 5. Resistor - 16,000 ohms - Carbon type - Radio frequency screen grid series resistor- Package of 5. Resistor-17,000 ohms- Carbon type - De- tector bias resistor - Package of 5. Resistor

23、 - 200,000 ohms - Carbon type - De- tector screen grid resistor -Package of 5. Resistor - 430,000 ohms - Carbon type - Out- put tube grid resistor - Package of 5. Spring-Tuningcondenser shield contact spring - Makes contact with motor shaft - Package of 10. Cord - Condenser drive cord - Package of 5

24、. Clip - Contact clip - For maintaining con- tact between tuning condenser shield and cast portion of tuning condenser - Pack- age of 10. Screw - Special hex. head - No. 4-40 machine screw -Used to adjust line-up condensers - Knob- stationselector or Volume control knob - Package of 5. Screen - Stat

25、ion selector screen- Package of 5. Support - Metal escutcheon for dial panel. Contact spring-Tuning condenser contact spring - Located on cast partition of tun- ing condenser - Package of 5. Power Cord-Flexibletwin conductor cord with male connector. Wrench- Special end wrench for tuning con- denser

26、 line-up adjusting screw. Cable - Receiver wiring cable. Capacitor Pack-Detector by-pass capacitor pack-Comprising one 0.75 mfd. and one 0.27 mfd. capacitorsin metal containers. Capacitor Pack - Detector screen grid supply and heater busby-pass capacitor pack - Comprising two 0.1 mfd. capacitor in m

27、etal container. Capacitor Pack - Radiofrequency,cathode, screen grid and plate by-passcapacitor pack -Comprising three 0.1 mfd. capacitors in metal containers. Clamp bar - Clamping bar for tuning conden- ser shield. Coil - R.F. plate supply filter coil mounted micarta strip. Coil - R.F. interstage f

28、ilter coil assembly. R-14, R-15, RE -17, 42 & 48 Stock No. DESCRIPTION 7112 7 113 7 114 7 115 7 116 7117 7 118 7 119 7 120 7 12 1 7122 7 123 7 124 7 125 7 126 7127 7128 7129 7130 7 150 7153 8571 8602 8604 8605 8606 8607 8608 8809 Transformer - Antenna transformer. Transformer - Interstage R.F. trans

29、former. Condenser - Adjustableline-up condenser - Capacity 5 to 15 mmfd. Filter assembly- Detector plate filter- Comprising 2 coils and 2 capacitors mount- ed on micarta strip. Resistor board assembly - Comprising micarta board with two 430,000 ohms, one 3200 ohm andone18,000 ohm resistors, with mou

30、nt- ing screws, lockwashers and nuts. Resistor-Procelaintype voltage divider resistor - Comprising one 3200 ohm section and one 1665 ohm section tapped at 8.0.0 and 950 ohms. Shield - Metal shield for 1st,2,3d R.F. or Detector radiotrons - 2 sections - Cap anc sleeve. Shield- Metal shield for antenn

31、a or R.F. interstage transformers - 2 sections - Cap and sleeve. Shield- Metal shieldfor phonograph input terminal board. Socket-Diallamp socketwithbracket, mounting screw, washer and nut. Socket - Single socket for Radiotron UX-280. Socket - Double socket for Radiotron UX-245. Socket - Single socke

32、t for Radiotron UY-224. Terminal strip - Distribution terminal strip for A.C. line and tapped filter inductor - Comprising micarta strip with 8 terminals, mounting screws lockwashers and nuts. Terminal strip-Heaterbusdistribution terminal strip- Comprising micarta strip with 2 terminals, mounting sc

33、rews,lock - washers and nuts. Terminal strip - Phonographinput terminal strip- Comprising micarta strip with 4 terminals, mounting brackets, screws, wash- ers and nuts. Scale - Dial scale - Package of 5. Volume control- Two units- With mounting washersand nuts(For 60 cyclel Grille cloth and baffle b

34、oard - Assembled. Wrench - Special combination open end wrench and screw driver - For adjusting line-up condensers. Volume control- With mounting washers and nut (For 25 cycle). Transformer - Power transformer - 220 volt - 60 cycle. Condenser - Tuning condenser assembly - Com- prising 4 condensers,

35、drive,drive cord, spring dial drum,dial lamp, socket and bracket and 4adjustableline-upCondensers. Inductor - Tapped filter inductorin metal container - Used as Filter reactor. Shield- Metal shield for tuning condenser assembly. Shield -Metal shield for (7106 and 7107) De- tector by-pass capacitors.

36、 Shield - Metal shield for R.F. Filter coil and by-pass capacitor packs. Transformer and Capacitorassembly -Compris- inginterstage transformer one 2 mfd. and 0.1 mfd., one 1.5 mfd., one 1 mfd., two0.025 mfd. and one 0.005 mfd. capacitors in metal container - For 60 cycle. Transformer- Power transfor

37、mer - 105-125 volts - 60 cycles. PAGE 64-A R-14, R-15, RE -17, 42 & 48 Stock No.DESCRIPTION Stock No.DESCRIPTION 2804 2825 2827 2828 2829 2872 2873 2947 3,218 3052 7077 7078 7085 7088 7087 70 88 7093 7147 7148 7151 8582 10174 10181 10184 10196 10289 10378 10688 10695 10879 10882 7092 10901 10904 109

38、05 10906 10922 10923 10924 10946 11057 Knob - Transfer switch or Pickup volume con- trol knob - package of 5. Connector block - pickup connector block and wire. Resistor- Motor resistor- 38 ohms for 25 cycles. Screw assembly -pickup mounting screw, washer and nut - package of 10 sets. Knob - Motor b

39、oard lifting knob with screw - Package of 2. Governor Balls-Governor balls and spring with mounting washers and screws - Screw assembly - Top plate, screws, washer, nut and ball bearing - Package of 5 sets. Leather -Brake frictionleather -package of 20 Resistor- Carbon type - 600 ohms - Screw assemb

40、ly - Pickup pole piece mounting screw, washer and nut -package of 10 sets. Regulator-Speed regulator escutcheon and screw, with mounting screws -Package of 2. Volume control-Pickup volume control- Complete less knob. Pickup - pickup unit complete. Lever - Regulator lever - package of2. Gear-Turntabl

41、e spindlegovernor driving gear with set screw. Disc - Rotor disc with set screw. Cover - pickup unit cover. Inductor - motor inductor- 110 volts - 25 cycles. Capacitor - Motor capacitor for 25 cycles. Back - Pickup unit back. Turntable - Turntable with cover. Springs - Brake springs - Set of 4 sprin

42、gs Package of 2 sets. Brake - Complete - Less switch with mounting screws. Plate -Brakelatch plate and 2 mounting screws - package of 5. Spring - Regulator shaft spring - package of 10. Governor-Complete- Comprising spindle, collar, friction Disc, balls and springs - Assembled. Top plate. Screw and

43、washer - Motor board mounting screw and finishing washer - package of 10. Cup - Needle cup - package of 2. panel - Cabinet front panel. Escutcheon - Tuning escutcheon. Arm - Pickup arm and base (less unit) with mounting screws. Spring - Lid support spring - package of 2. Cushion - Lid cushion - pack

44、age of 20. Ratchet - Lid support ratchet and bracket. Support - Lid support - Complete. Switch -Radio -Record transfer switch -Complete - Less knob. Transformer - pickup input transformer. Inductor - Motor inductor- 110 volts, 60 cycles. Foot - Cabinet foot. Dial Screen 8814 8615 10778 10834 10863 1

45、0884 10887 2791 7103 7104 8559 8599 8600 8801 10885 10887 10888 10890 10885 10887 10888 10889 10891 11057 2814 2820 2749 2759 2762 2763 2784 2765 2788 2767 2768 2789 2771 27 73 2774 2778 2781 2785 27 86 Transformer and Capacitor assembly -Compris- ing interstage transformer, one 3mfd., one 1.15 mfd.

46、, one 2. mfd., one 0.1 mfd., two 0.025 mfd. and one 0.005 mfd. in metal con- tainer (For 25 cycle). Transformer- power transformer - 105-125 volt - 25 cycle. Shield - Detector plate filter shield. Clip - Tube socket clip - Package of 10. Shaft - Drive shaft - Package of 2. Shaft - Idler shaft - Pack

47、age of 5. Spring - Drive cord spring - Package of 5. LOUDSPEAKER ASSEMBLY Ring -Field coil spacing ring -One set of 2. Bolt - Nut and lockwasher assembly - One set of 4. Transformer -Output transformer with spacers, lockwashers and nuts. Ring - Cone retaining ring. Coil - Field coil. Support - Metal

48、 cone support with terminal board. Cone -Complete with Voice coil -package of 5. SPECIAL PARTS FOR RCA RADIOLA Condenser -Tone controlcondenser -0.05mfd. Knob - Tone control knob - package of 5. Control - Tone control - Less knob. Grille - Grille cloth and baffle board. SPECIAL PARTSFOR VICTOR RADIO

49、 R-14 Condenser - Tone control condenser 0.05 mfd. Knob - Tone control knob - package of 5. - Tone control - Complete less knob. Escutcheon - Tuning escutcheon. Scale - Tuning dial scale. Screen - Dial screen. SPECIAL PARTS FOR RE -17 Switch - Brake motor switch. Cushion - pickup rubber cushions- Set of damper and 2 pivot cushions - package of set. Capacitor-pickup transformer condenser 2400 mmfd. Box - Needle box with lid - package of 2. Bearing assembly - Governor bearing assembly Comprising 2 bearings, 2 set screws and 2 ball bearings - Package of