RCA-Victor-Co-Inc-241-B 电路原理图.pdf

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1、8 -Tube Battery -Operated SuperheterodyneReceivers MODEL 241 B Models 142-B and2AAG1:1 TRANSFORMER Ps . ITLYISFORMER e 10 1 CI0 0 OSS. SUES kik Location of Line-up Capacitor MODEL 142 B Total A Battery Current 048 Ampere Average B Battery Current15 M. A. Type and Number of Radiotrons: 2 RCA -34, 1 R

2、CA -32, 5 RCA -30 -Total, 8 Tuning Range540-1500 K. C. Maximum Undistorted Output1.0 Watt Alignment Procedure DIAL CALIBRATION: With tuning condenser fully meshed set dial so that pointer coincides with small arrow on edge of dial. STEP CONNECT HIGH OSC.TO - TUNE TO - TURN DIAL TO ADJUST THE MAX. OU

3、TPUT I 1st Dot. Grid thru 0.05 laidfd KS Quiet point S of 2nd I -F Trans. 2 SE 5 4=. mmE-19 c17 0.1 WO. C15 D3111 -O. CNA3913 0R001.0 55 .4 iRs.I.D4E.T324.104 34 So 2.D, DET. La 7. R.C11,30 ssAV5A 50000 FOR AIR -CELL BATT. OPERATION ,-DOR STORAGE 44- 19AT1. OpERALioN *A+A RII R 100001* RI 3500006.39

4、00001*230000 El R11 MEG R ib 60019. /53 MEG C t noro DRIVER R.E A.30 6 C25 0.3 5 Rib 10001* 5953 -B 5+A 1322i .50Bri50 - Schematic Diagram Note-Some models have additional fuse in 90 -volt lead OUTPUT 2= R.C.A.30 T DO INTERNAL CONNECTIONS. OF BOARD - GREEN / 20-4-.1me.6- 135e -YELLOW 111 30.4- INTER

5、NALCONNECTIONS OF RYER TRANSF. INTERNAL CONNECTIONS OF OUTPUT TRANSF. 15. ,1 GREEN CI. sil /4 3 .n. .0 -CO mt-91 RED-MLLE.,/ INTERNAL CONNECTIONS OF lEr IF. TRANSF. cneEN INTERNAL CONNECTIONS OF 2.2-9 LE TRANSF. 1.?.;tg C 21 10 - 70 14615 0. 收音机爱 好者资料库 RadioFans.CN PAGE 519-5 142B & 241 B REPLACEMEN

6、T PARTS Insist on genuine factory tested parts, which are readily identified and may be purchased from authorized dealers Stock No. DESCRIPTION ListStock No. DESCRIPTION List RECEIVER ASSEMBLIES3932Capacitor -2,400 mmfd. (C28, C29) 2012Capacitor -1,200 mmfd. (C22, C23) 3946Resistor -230,000 ohms-Car

7、bon type -3i 2734Capacitor -745 mmfd. (C11)-Package of 5. watt (R12)-Package of 5 2737Escutcheon-Local-Distant switch escutch- eon-Package of 5 3947Resistor -390,000 ohms-Carbon type -3 watt (R11)-Package of 5 2747Cap-Contact cap-Package of 53948Resistor -350,000 ohms-Carbon type-M 2816Resistor - 1,

8、000 ohms - Carbon type -M watt (R10)-Package of 5 watt (R16)-Package of 5 3950Shield-Radiotron shield 2966Resistor - 28,000 ohms - Carbon type - 1 watt (R4)-Package of 5 6176Escutcheon-Operating switch escutcheon- Package of 5 3048Resistor -500,000 ohms-Carbon type-k watt (RI, R5)-Package of 5 6300S

9、ocket -4 -contact Radiotron socket 3056Shield-Radiotron shield-R. F. or oscillator -Package of 2 6303Resistor -20,000 ohms-Carbon type-s watt (R7)-Package of 5 3076Resistor -1 megohm-Carbon type -3/2 watt 6489Coil-Antenna coil (LI, L2, L3) (R13, R14)-Package of 5 3078Resistor - 10,000 ohms - Carbon

10、type- 6512Capacitor -0.005 mfd. (C26) watt (R9)-Package of 56516Connector -Fuse connector 3088Knob-Operating switch knob-Package of 5. 6548Capacitor -8.0 mfd. (C27) 3238Screw-Set screw for switch knob-Package of 10 6604Capacitor -0.5 mfd. (CI5) 3472Capacitor -2,400 mmfd. (C24) 6709Transformer-Output

11、 transformer (T2) 3584Ring-R. F.,oscillatororantennacoil retaining ring-Package of 5 6710 6711 Transformer-Audio driver transformer (Ti). Coil-Choke coil (L14) 3592Knob-Station selector, tone or volume con- trol knob-Package of 5 6712Transformer-First intermediate frequency 3623Shield-R. F.,oscillat

12、oror antenna coil transformer (LIO, L11, C17, C18) shield6713Transformer-Second intermediate frequency 3639Capacitor -0.02 mfd. (C2) transformer (L12, L13, C21) 3702Capacitor -0.25 mfd. (C3) 6714Volume control (R8) 3711Capacitor -80 mmfd. (C13) 6715Dial-Volume indicator dial assembly 3748Fuse-J4 amp

13、ere fuse (Fl)-Package of 5. 3765Capacitor -0.025 mfd. (C25) 6716Switch-Tone control switch 3768Screw-Volume indicator or station selector dial scale set screw-Package of 10 6717Condenser -3 -gangvariabletuningcon - denser (C4, C5, C6, C7, C10, C12) 3859Socket -4 -contact Radiotron socket-Audio 6718S

14、cale-Station selector dial scale assembly driver and output Radiotrons 6719Coil-R. F. coil (IA, L5, L6) 3877Capacitor -0.1 mfd. (C1, C14, C16, C19, C20) 6720Coil-Oscillator coil (L7, L8, L9) 3881Escutcheon-Station selector escutcheon . . 6721Cable-Main cable-For table models 3892Resistor -600 ohms-C

15、arbon type-i2 watt 6737Resistor -0.62 ohms-Wire wound (R17) (R15)-Package of 5 3899Escutcheon-Volume control escutcheon7062 Capacitor-Adjustable capacitor -15 to 70 3908Switch-Local-Distantswitch-Fortable mmfd. (C9) models,7065 Screw-driver-For R. F. and I. F. adjust - 3909Switch-Local-Distant switc

16、h-For console models ments 3910Screw assembly-Chassis mounting screw assembly-Comprising 4 screws, 4 washers and 4 spacers REPRODUCER ASSEMBLIES 3911Resistor -40,000 ohms-Carbon type -3 watt (R2)-Pack age of 5 3949Magnet 3912Resistor -90,000 ohms-Carbon type -1A watt (R6)-Package of 5 9428Cone-Reproducer cone-Package of 5 3913Switch-Operatingswitch -4 -pole,single 9453Reproducer complete throw9454 Housing-Cone housing and core assembly. 收音机爱 好者资料库 RadioFans.CN