RCA-Victor-Co-Inc-T4-8 电路原理图.pdf

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1、PAGE 14-B MODELS T 4-8 MODEL T 4-8 and T 4-9 MODEL T 4-9 Four -Tube, Single Band, A -C 1- IgDET.;:K Cr? .-sv WAVE TRAP 113. .DET. 18-41001 MMF.MFD. C11C12 85-11085-140 MMF.MMF.I.F. g Leto. DU. I I6 F 7 C25 5-40 MMF _7 1SCO-340 MMF. C10 4.MFD. C,5 .e .0025 MFD. C17 L7.05 MFD OUTPUT RI 100,00012- RECT

2、. 1-V LIG 1800A - T 0 8 6161)6V zso-n- FIELD *0 0 C I 5 MFD. -=- 1914 0.1 100L 160-r -1- MMF. R6 4coo-n- R 7 E500 -n - .o. 1 R10 1 MEG RB 170000- R-9 30,0o01, - C15 5MFD C .005 MFD. T -473 -Ai _IL cx sal I s/ C7L b. MFD. C73 0 DIAL LAMP -Schematic Circuit Diagram SPEAXf R Loudspeaker Wiring 收音机爱 好者资

3、料库 RadioFans.CN PAGE 1.6-B T4-8 & T4-9 DIAL CALIBRATION: With tuning condenserfully meshed, check dial calibration. STEP CONNECT HI DH SIDE OF TEST OSC. TO - TUNE TEST OSC TO - TURN RADIO DIAL TO ADJUST THE FOLLOWING FOR MAX. OUTPUT 1 1st De t . Grid in series with 0.01 mfd Pkc4_0 quiet Point near 0

4、00 kc C12, C11 let I -F Trans. 2 Antenna in series with 200 mmfd 027 Wave Trap Minimum Output 3 1400 Pre1400 kc C25,024Osc .Ant. 4000 kc000 kc C7c . (R L-F Osock Gang) Repeat Step 3 -RED 250 5-ACK- POWER TRANSFORMER Li,L5 -RED CREEK- 5.0, a cs 01 Cs -S. es-wo Co Cs 02.- Ca 21-110 MAR VELLOw VILETRAN

5、SFORMER REPLACEMENT PARTS WAVE TRAP fftt usc.jcuica .314- 13 CAPACITOR PACK Insist on genuine factory tested parts, which are readily identified and may be purchased from authorized dealers STOCNo.K DESCRIPTIONSK No. DESCRIPTION RECEIVER ASSEMBLIES3602 Resistor -60,000 ohms-Carbon type -1/4 watt (R2

6、 ) -Package of S 4244 Cap -Gridcontact cap -Package of 5. 3118 Resistor -100,000 ohms-Carbon type -%4 4000 Capacitor-Adjustable capacitor (C7). watt (F(1) -Package of S 3459 Capacitor -80 mmfd. (CS) 3869 Resistor -170,000 ohms-Carbon type -1/2 11302 Capacitor -115 mmfd. (C26) watt (R8)-Package of 5

7、3865 Capacitor -160 mmfd. (C16) 3076Resistor -1 megohm-Carbontype -1/2 5107 Capacitor -0.0025 mfd. (315) watt (R10)-Package of S 6787 Capacitor -0.005 mid. (C21) 3584 Ring-Oscillator coil shield ring-Package 4836 Capacitor -0.05 :laid.33) ofS 4886 Capacitor -0.05 mid.(317) 6665 Shield-Oscillator coi

8、lshield and bracket 4835Capacitor -0.1 mid. (C1) assembly 4885 Capacitor -0.1 mfd. (C14, C18) 3942Shield-I. P. and second detector Radiotron 4841 Capacitor-O.1 mfd. (C29) shield 6832 Capacitor -4.0 mid. (C10) 8098 Socket-Dial lamp socket 6661 Capacitor pack-Comprising two 5.0 mfd. and two 8.0 mid. c

9、apacitors (313, C19, C22, (323) 11187 6663 Transformer-First intermediatefrequency transformer (L4, L5, C11, C12) Transformer-Secondintermediate ire, 5051 Coil-Antenna coil (Li, LII, C3, RI). quency transformer (L6, L7) 3857 Coil-Choke coil (L8) 9465 Transformer-Power transformer -105.125 5050 Coil-

10、Oscillator coil (L2, L3) volts -25,50 cycles 6660 Condenser-Two-gang variable tuning con, denser (C4, C6, C24, (325) 9464 Transformer-Power transformer -105,125 volts -50-60 cycles (Ti) 6667Volume control (R6, S3) 9466 Transformer-Power transformer -200,250 11301 Dial-Station selector dial volts -50

11、.60 cycles 4340 Lamp-Dial lamp-Package of 5 11224 Trap-Wave trap (R12, L12, C27, C28). 3632 Resistor -500 ohms-Carbon type -1 watt ( Fill ) -Package of 5 REPRODUCER ASSEMBLIES 3047Resistor -1500ohms-Carbon type -1/2 watt (R7)-Package of 5 9548 Coil assembly-Comprising geld coil, mag, net and cone su

12、pport (L10) 6114Resistor -20,000ohms-Carbon type -1 watt (R3, RS)-Package of S 9588 Cone-Reproducer cone- (L9) -Package of S 3889Resistor -25,000 ohms-Carbontype -3 9547 Reproducer-Complete watt (R4) 4447Shield-Terminal board shield forrepro, 3077 Resistor -30,000 ohms-Carbon type -1/1 ducer watt (R9)-Package of 5 4803 Transformer-Output transformer (T2). 收音机爱 好者资料库 RadioFans.CN