RCA-Victor-Co-Inc-RADIOLA-30-A 电路原理图.pdf

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1、PAGE 1_24-A RADIOLA30-A 10 DLTto I F LOOP t Er -1 Radlcla 30A is made in a.c. and d.c. types._ The receiver chassis is the Radiola 28 and uses Model 100A Loudspeaker. Refer to Radiola 28 for additional data. VETOT AS RAMOrecaucs4cv(samoCURRENT LOCAL OSCILLATOR FREQUENCY CURRENT INTERMEDIATErtcoutmcv

2、CURRENT AMA rOMOUCNCV CURRENT Radiola 30A Radiotron sequence and path of the different currents To UX-171 VOLTAGE READINGS OF RADIOLA 30A Taken at Catacomb Terminal Strip-Count Terminals from Left to Right When Facing Front of Radiola 30A Terminals 1to21 1to 10 10 to11 Correct Effect Should measure

3、31 volts, normally, with all Radiotrons lit and battery setting near Off.Positive terminal of volt- meter on No.1. Should measure 21.5 volts, normally.Positive terminal of voltmeter to No.10. Should measure 41 volts, normally.Positive terminal of voltmeter to No.11. RCA VICTOR DIVISION OF RADIO CORP

4、ORATION OF AMERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN PAGE 125-A RADIOLA 30-A Black with BlackBlack and Ye/owglue -with Green TracerI Greenand RedYe/ow Tracer TERMINAL - CATACOMB WHISKERS NEUTRALIZING CONDENSER. LOOP COMPENSATING CONDENSER. 0 0 0 00 (Del 0 COIL SYSTEM -41/4 Black -Black

5、 with Green Tracer ANTENNA COUPLER ROTOR. -/-, -STATOR - - FILAMENT CONTROL Green7 PHONE JACK- Yellowwith/ ANT Green Tracer Blue with GN D. Ye/%w Tracer 1 ROTOR. Blue with Red Tracer Yellow with -Red Tracer(Green Tracer Bide with VOLUM CONTRO Red with Yellow Tracer Cable STATOR YellowBlack and and R

6、edGreen Panel and antenna coupler assembly continuity wiring diagram 收音机爱 好者资料库 RadioFans.CN PAGE i26-A RADIOLA 30-A The allowable values in ohms for the different sections of the resistance strips in Radiola 30A are tabulated below: TerminalsLower LimitNormalUpper Limit 1-2260271 282 2-3OpenOpen Op

7、en 3-4230236.5 243 4-5191197 203 5-6176183.5 191 6-7146154.5 163 7-8137145.5 154 8-945 5055 POWER UV171 TRANSFORMER. 411IJ INPUT PLUG a a S01 12 MFD CONDENSER Internal connections of filter condensers ;12 MFD IS MID INPUT CABLETRANSFORMER. FILTER REACTOR. K:57 CABLE CABLE iOOQUJz OU PUT /RAN ROOMER

8、UWE LIR-1/1 U5.1511 ,TERMINAL STRIP Continuity wiring diagram of theunit 1 MFD. IM 1 IAFD.1 MFD. jI MFD. I MFD. 1 MFD. 4MFO. 1 MFD. 15 MFD. CONDENSER UX.261 I -POTENTIOMETER LOUDSPEAKER MODEL 100.A ,TERMINAL STRIP LOUDSPEAKER MODEL 100.A fl,CATACOMB 2222220II12INb5bMbSbDU 0911 N54 iii TERMINAL STRIP

9、 收音机爱 好者资料库 RadioFans.CN PAGE i27 -A RAD1OLA 30-A 14 14 14 1MFD 1-r-11-6 r1 MFD. 1 MFD MFG D.C. socket powered Radiola 30A is identical to the A.C. Model in all respects with the exception of the Socket Power Unit consisting of four Radiotrons UX-171A connected in a push-pull amplifying circuit. The

10、 output transformer is designed for use with RCA Loudspeaker 100A. 1 1 TERM.STRIP 1 -A +A +45 -1,0 uX- 111A 2MFD. of INPUT TRANS.111 A 234 OUTPUT- 5Y-PAS5 CONDENSERS18 Radiola 30A D.C. Socket Power Unit schematic circuit with terminal connections, plate, grid and filament voltages. CONDENSER BANK Tw

11、o condenser banks are incorporated in D.C. socket powered Radiola 30A, one 10. Mfd. and one 12 Mfd.The 12 Mfd. condenser block consists of one 6 Mfd. filter con- denser and two 2 Mfd. grid blocking condensers and two 1 Mfd. grounding condensers.The 10 Mfd. condenser block contains the extra filter c

12、ondensers normally in the A.C. package used with the eight -tube catacomb.The internal connections of each condenser bank we shown on a diagram mounted on the side of each unit. 2 .5 bac 111A . 5 ME U%111A 2 MR). 4 OUTPUT TRAN5. er ci 3c.2 1 INFIX1 MED 7 89 011 121Sra. -y- RFD05C. + C-16Yt -24 co.T FRAME