RCA-Victor-Co-Inc-8BK 电路原理图.pdf

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1、11:4GE6360ELS8BT, 8BK, 8BT6, and 8BK6 Eight -Tube, Three -Band, Battery -Operated, Superheterodyne Receivers MODELS 8BT dl 8BT6 LitCS4 4110U.te.000AL,E,000A.C.EAU., WAVE MakWitANTMR SEC.1.104 4404.4. SEC. API 440 PG -Radiotron, Coil, and Trimmer Locations Electrical Specifications FREQUENCY RANGES S

2、tandard Broadcast (A)530.1,780 kc Medium Wave (B)1,780.6,300 kc Short Wave (C)6,300.22,000 kc MODELS 8BK d 8BK6 ALIGNMENT FREQUENCIES Standard Broadcast (A) 600 kc (osc.), 1,500 Medium Wave (B).6,000 Short Wave (C)20,000 kc (osc., ant.) kc (osc., ant.) kc (osc., ant.) Intermediate Frequency 460 kc R

3、ADIOTRON COMPLEMENT (1) RCA -1A6First Detector(5) RCA -1F6 Second Detector-A.F.-A.V.0 (2) RCA -1B4Heterodyne Oscillator(6) RCA -30 Audio Driver (3) RCA -1A4First Intermediate Amplifier(7) RCA -49. Power Output (4) RCA -1A4Second Intermediate Amplifier(8) RCA -49. Power Output Pilot Lamps8BT or 8BK (

4、1); 8BT6 or 8BK6 (2) ; 2.0 volts, .06 ampere, miniature screw base, T-31/4 clear BATTERIES REQUIRED 8BT or 8BK A, tine plug-in 21/2 -volt Air -cell (Eveready A-600 or equivalent), or one 2 -volt storage battery; B, three 45 -volt, heavy duty, plug-in type B batteries; C, one 71/2 -volt C battery tap

5、ped at -3 volts; and four bias cells (Stock No. 12681). 8BT6 or 8BK6A, one 6 -volt storage battery;B,none required; C, one 71/2 -volt C battery tapped at -3 volts; and four bias cells (Stock No. 12681). CURRENT CONSUMPTION8BT or 8BK 8BT6 or 8BK6 A at 2 volts0.58 amp. (pilot lamp A at 2 volts0.64 amp

6、. (pilot lamp A at 6.0 volts ,1.35 amps. A at 6.3 volts 1.40 amps. B at 135 volts 19 ma.(Supplied from vibrator) Fuse Rating I/2 amp3 amp. POWER OUTPUT Undistorted. 1.2 watts Maximum 2.2 watts Models 8Br V Ds Battery Cable (8BT and 8BK) (Stock No. 12938) RCA VICTOR DIVISION OF RADIO CORPORATIONOF AM

7、ERICA, CAMDEN N. J., U. S. A. 收音机爱 好者资料库 RadioFans.CN .6 1WDET. Momm. t -e 40A. more-SELECTOR SHOWN INBRNO POSITION ANT COIL CONNECTIONS IA4Jr X 2201.1. IA4 V. JltlY DET. A.F. IFA A.V.C. TitE4.0 TEMP RS C. 2. 4 CELLS SERVICE HINTS cam POSAoro II Rio tO PAut g),.7_, ._,2,-i0, _, Li_.c)16.-ov.- 2,14._

8、,.m 7)_1Lv:.1.0 8)r9-* -iL-0 2Qr-Fi-5) i 4 460 K. . i(*-11 I ,.M.)-.2E.G.,.0.)j 111D j. _.) .1 I.=- DRIVER- OSC.T- 14.1/.i1.-, .-, i44 II L I134v.-2v.J L2,._ J rd, DET.-4FA 1 j.c,.3TZAHL5F.); iESC-c.L -2V. -I Wit- 1F4 iOUTPUTOUTPUT . I I30 184 1 9V.dv. I Ov.Ov. 1 COIL 1 CO 0-.:( 0-ET4T;E:A;LI)R -E j

9、- . . - I t II II CAUTION: Do not attempt to measure voltages on control grids of RCA -1A6 or RCA -1A4, with any con. veruional voltmeter, due to presence of bias cells. P-74916-0 BOTTOM FRONT OF CHASSIS. (-5v.) -0.2v. (-al.V.) (00 NOT MEASUR SEE TEXT CAUTION:- DO NOT MEASURE - SEE TEXT 4 o.sv. tv.

10、ov I_ G.I r DET. I A Ov. 0 PRI. Si. 134v. BIAS CELLS ROJ. 440X.Cy 22 I.F. TRANSF. C.G. & .:2- 03 I.F. -1, /A4 r -135v.- 1 17w Q). i2v.3 4:,I.F.I L .41:11044., TRANSF.e 4. 19 sT_I (DO NOT MEASURE) I i_ (45.v. )y SEE TEXT/iZSv. i V. -Radiotron Socket Voltages, Coil, and Trimmer Locations Measured with

11、 allbatteries at normal voltage -Tuned to approximately 1,000 kc (Standard broadcast)-No signal being received-Volume control optional Note: Two voltage values are shown for some read- ings. The higher value shown in parenthesis with asterisk (*) indicates operating conditions without voltmeter load

12、- ing. TX VIBRATOR TRANSF. To. FUSE TOCNNo. 11021-B811 SLAM 1.123- IRKS INWIZNAL CONNECTIONS OP VIBRATOR an. WILL REACTOR TR 1000., AL YELLOW.Luc - VIBRATOR TRANAF. CONNECTIONS to Rao -SHIELD ou&REM EXT. POWERI SUPPLY 1. SWITCH YELLOW BLACK-YELLOWBLACK e-NEoC37 BLACK LLCM SM.ELOEKT. TO RECEIVER IRO

13、CABLE SLACK000e0 STOCKI3.1.7 Y 000.01 E LOW -Power Unit Wiring (8BT6 atrcl 8BK6) Alignment Procedure With tuning condenser fully meshed set point- er to coincide with 530 calibration at low frequency end of BC Band. STEP CONNECT HIGH SIDE OF TEST OSC. TO - TUNE TEST OSC TO - TURN RADIO DIAL TO ADJUS

14、T THE FOLLOWING FOR MAX. OUTPUT 1 2nd I -F Grid In series with 0.0 imfd 480 Kc Quiet Point near 600 Kc ITC Band L12L10 3rd I -F Trans. 2 1stI -F Grid in series with 0.01mfd LipL9 2nd I -F Trans. 3 1st De t. Grid in series with 0.01mfd L24L23 1st I -F Trans. 4 Antenna in series with 200 ohms L22Wave

15、Trap Minimum Output 5 Antenna In series with 300 ohms 20000 Kc 20 Mc NSW! Band C44fC3A Osc.Ant. 66000 Kc 6 Mc IIMEDu Band C48tC4 Osc.Ant. 7 Antenna in series with 200 mmfd 1500 Kc 1500 Kc NBC Band C47C5 Osc.Ant. 8800 Kc 800 Kc PBC, Band L20L -F Osc. Rock Gang 9Repeat Step 7 Osc. tracks 460 lc above

16、signal on all bands. tUse minium capacity peak. Use%axial capacity Peak -ROCS GANG. 收音机爱 好者资料库 RadioFans.CN Power Supply (Models 8BT6 and 8BK6) A 6 -volt storage battery supplies power for the vibrator and for the tube filaments. Four connections are required to the 6 -volt battery.The + 6 -volt (bl

17、ack) lead and the + 4 -volt(blue)lead supply filament voltage to the receiver, while the + 4 -volt (red) lead and - volt (yellow) lead supply voltage to the vibrator power unit.The two 4 -volt leads (blue and red) should make separate connections to the same battery strap to avoid against vibrator b

18、uzz which might otherwise result if these two leads are joined together or touch each other.The 71/2 -volt C battery is located on the top -side of the receiver chassis and securely held in place by a metal cover (see figure 3). The four bias cells are located under- neath the receiver chassis PAGE

19、137-B 8BT, 8BK, 8BT6 & 8BK6 Radiotron Plate Current Readings Measured with Milliammeter Connected at Tube Socket Plate Terminals under Conditions Similar to Those of Voltage Measurements (1) RCA -1A6 -1st Det.1.2ma. (2) RCA-1B4-Osc.3.8ma. (3) RCA -1A4 -1st I.F.0.9ma. (4) RCA-IA4-2nd I.F.0.9ma. (5) R

20、CA- IF6 -2nd Det.-A.F.-A.V.C0.25 ma. (6) RCA -30 -Driver3.2ma. (7) RCA -49. -Output1.5ma. (8) RCA -49 -Output1.5ma. REPLACEMENT PARTS Insist on genuine factory tested parts, which are readily identified and may be purchased fromauthorized dealers. STOCK . DESCRIPTION LIST SNoTOCK . DESCRIPTION LIST

21、RECEIVER ASSEMBLIES12681Cell -Bias cell 12806Board -3 -contact antenna and ground ter- minal board and bracket assembly 12940 12702 Dial -Station selector dial Drive -Vernier drive complete for variable 12717Board -3 -contactphonograph terminal tuning condenser board 12808Holder -Bias cell holder 52

22、37Bushing -Variablecondenser mounting bushing assembly -Package of3 12712Indicator -Stationselectorindicator pointer 12118Cap -Grid contact cap -Package of 5. 4348Lamp -Dial lamp, 2 -volt 12714Capacitor -Adjustable trimmer (C3, C4, 12941Mask -Dial light diffuser C5, C44, C46, C47) 5112Resistor -1,00

23、0ohm -carbontype -1/4 12814Capacitor -5.6 Mmfd. (C51) watt -Package of 5 (R15, R20) 12896Capacitor -15 Mmfd. (C59) 11305Resistor -22,000 ohm -carbon type -t/4 12948Capacitor -33 Mmfd. (C52) watt -Package of 5 (R24) 12723Capacitor -56 Mmfd. (C2) 11364Resistor -33,000 ohm -carbon type -1/4 12950Capaci

24、tor -120 Mmfd. (C50) watt -Package of5(R22) 12404Capacitor -120 Mmfd. (C18, C19, C20). 12454Resistor -33,000 ohm -insulated type -1/4 12724Capacitor -120 Mmfd. (C24) watt -Package of 5 (R14) 12946Capacitor -130 Mmfd. (C11, C12, C15, C16) 11282Resistor -56,000 ohm -carbon type -1/10 watt -Package of5

25、(R4) 12725Capacitor -150 Mmfd. (CI) 5029Resistor -56,000 ohm -carbon type -1/4 12952Capacitor -330 Mmfd. (C49) watt -Package of5(R26) 12727Capacitor -555 Mmfd. (C48) 5145Resistor -100,000 ohm -carbon type -I/4 12537Capacitor -560 Mmfd. (C6) watt -Package of 5 (R16, R18) 12947Capacitor -1,800 Mmfd. (

26、C45) 12478Resistor -150,000 ohm -carbontype - 12951Capacitor -2,200 Mmfd. (C42) 1/10 watt -Package of 5 (R23) 5107Capacitor -.0025 Mfd. (C21, C27, C28) 5158Resistor -220,000 ohm -carbon type -1/4 5005Capacitor -.0035 Mfd. (C25) watt -Package of 5(R17, R19) 4868Capacitor -.005 Mfd. (C30) 11323Resisto

27、r -270,000 ohm -carbon type -1/4 4858Capacitor -.01 Mfd. (C9, C10, C13, C14, watt -Package of5 (R9) C40, C41, C55, C56) 11452Resistor -470,000ohm -carbontype - 5196Capacitor -.035 Mfd. (C29) . . 1/10 watt -Package of 5 (R1) 4841Capacitor -0.1 Mfd. (C17, C57) 3033Resistor -1 meg.-carbon type -1/4 wat

28、t 4840Capacitor -0.25. Mfd.(C8,C23,C39, -Package of 5 (R2, R6) C58) 12200Resistor -1 meg.-insulated type -1/4 watt 12804Capacitor -Pack, comprising 2 sections 8 -Package of 5 (RIO) Mfd. each (C43, C54) 11626Resistor -2.2 meg.-carbon type -1/4 watt 12179Coil -Choke coil (L25) , -Package of 5 (R3, R8)

29、 12708Coil -Antenna coil and shield complete 12651Shield -Coil shield for Stock No. 12708 (LI, L2, L3, L4) 12710Shield -Coil shield for Stock No. 12943. 12943Coil -Oscillator coil and shield complete 12008Shield-I.F. transformer shield for Stock 12701 5119 (L5, L6, L7, L8, L19, L20, L21) Condenser -

30、2 -gangvariable tuning con - denser (C7, C53) Connectol-3-contact female connector for speaker cable. 12581 12607 No. 12945 and 12949 Shield-I.F.transformershieldtopfor Stock No. 12949 Shield-I.F. transformershieldtopfor Stock No. 12945 12805Connector - 5 -contactmalereceptacle 4236Shield -Front 1A4

31、 Radiotron shield located on rear of receiver chassis for power cable. 3682Shield -1A4, 1B4, 1A6 or 1F6 Radiotron shield 12800Core -Adjustable core and stud for Stock No. 12943 4794Socket -4 -contact 1A4, 1B4 or 30 Radio - tron socket 12006Core -Adjustable core and stud for Stock4814Socket -5 -conta

32、ct 49 Radiotron socket No. 12945 and 129494786Socket -6 -contact 1A6 or 1F6 Radiotron 12664Core -Adjustable core and stud for Stocksocket No. 1265411199Socket -Dial lamp socket PAGE i 38-B 8BT, 8BK, 8BT6 & 8BK6 REPLACEMENT PARTS-Continued STOCK No. DESCRIPTION LISTSTOCK No. DESCRIPTION LIST 12007Spr

33、ing-Retaining spring for core Stock 12824Switch-Power switch (S3, S4) Nos. 12800, 12006 and 12664-Pack-12816 Transformer-Vibrator transformer (T3) age of 1012817 Vibrator-Complete (L16). 12942Switch-Range switch (SI, S2) 4285Washer-Fuse connector insulating washer 11219Tone Control-(R21) .-Package o

34、f 10 12944Transformer-Audiotransformerpack (T1, T2) MISCELLANEOUS ASSEMBLIES 12945Transformer-First I.F. transformer corn plete (L23, L24, C11, C12) 4289Body-Fuseconnectorfemalebody- -Package of 10 (8BT-8BK). 12945Transformer - Second I.F.transformer complete (L9, L10, C15, C16) 12938Cable-Power cab

35、le(set end)approxi- mately 60 -in. long complete with four 12949Transformer-Third I.F. transformer com plete (L11, L12, C18, C19, C20, R4) 2 -contact male connectors and one5- contactfemaleconnector-less power 12654Trap-Wave trap (L22) switch (8BT-8BK) 11589Volume Control-(R5) REPRODUCER ASSEMBLIES

36、Console Model 8BK-8BK6 12786Cable-Power cable (battery section) corn - plete with battery connectors and female section of 4contact connector (8BT6- 12667Cone-Reproducer cone anddustcap 8BK6) (L13) 4288Cap-Fus. connector male cap-Package 5118Plug -3 -contact male connector for repro- of 10 (8BT-8BK)

37、 ducer 12827Connector -2 -contact and guide pin male 9713Reproducer-Complete connector and cover for power cable REPRODUCER ASSEMBLIES Stock No. 12938 (8BT-8BK) Table Model 8BT-8BT6 12828Connector-2contact male connector for 12642Cone-Reproducercone anddustcap power cable Stock No. 12938 (8BT- (L13)

38、 8BK) 5118Plug-3contact male connector for repro- ducer 12788Connector -4 -voltbattery connectorfor Stock No. 12786-Package of 2 (8BT6 9712Reproducer-Complete -8BK6) VIBRATOR ASSEMBLIES 8BT6-8BK6 12790Connector -4 -contact female connector for cable Stock No. 12786 (8BT6-8BK6) 4289Body-Fuseconnector

39、femalebody- Package of 10 12791Connector -5 -contactfemale connector and cover for power cable for StOck No. 12822Cable-Power cable(set end) approxi- 12938 (8BT-8BK) mately 63 -in.long complete with one 12787Connector -6 -voltbattery connectorfor 5 -contact female connector and one 4- contactmalecon

40、nector-lesspower Stock No. 12786-Package of 2 (8BT6 -8BK6) switch-used in 8BT6 Model only. 12698Crystal-Stationselectordialescutcheon 12823Cable-Power cable(setend) approxi- and crystal mately 44 -in. long complete with one 5 -contact female connector and one 4- 4286Ferrule-Fuse connector ferrule an

41、d bush - ing-Package of 10 (8BT-8BK) contactmaleconnector-lesspower switch-used in 8BK6 Model only. 3748Fuse -1/2 ampere-Packageof 5(F1) (8BT-8BK) 4288Cap-Fuse connector male cap-Package of 10 4290Insulator-Fuse connector body insulatoi -Package of 10 (8BT-8BK) 4937Capacitor-.01 Mfd. (2 used in para

42、llel)12699Knob-Stationselectorknob(large)- (C31, C32)Package of5 4836Capacitor-.05 Mfd. (C36)12700Knob - Stationselectorvernierknob 4841Capacitor -0.1 Mfd. (C35)(small)-Package of 5 12821Capacitor -0.1 Mfd. (C38) 11347 Knob-Volume control, range switch, tone 12820Capacitor -0.25 Mfd. (C34)switch or

43、power switch knob-Package 4840Capacitor -0.25 Mfd. (C33) of 5 11387Capacitor -10 Mfd. (C37) . , 12939 type-Pack.it esistor-0.36 ohm-flexible age of 5 (R25) (811T-8BK) 12819Coil-Vibrator chokecoilandterminal board assembly (L17) 11377Screw-Chassis mounting screw assembly 12179Coil-Vibrator choke coil

44、 (L15) fortablemodel only-Package of 4 12793Connector -4 -contact male connector for (8BT-8BT6) 12791 4286 power cable.,. Connector -5 -contactfemaleconnector and cover for power cable Ferrule-Fuse connector ferrule and bush - ing-Package of 10 11210 12789 Screw-Chassis mounting screw assembly for c

45、onsole model only-Package of 4 (8BK-8BK6) Screw-Cone point set screw for connector 10907 Fuse-3-ampere-Package of 5 (F1). Stock No. 12788-Package of 10 4290Insulator-Fuse connector body insulator (8BT6-8BK6) -Package of 10 4284Spring-Fuse connector spring-Package 12815Reactor-Air core reactor (L14)

46、of 10 (8BT-8BK) 12818Reactor-Iron core (L18) 11349 Spring-Retaining spring for knob Stock 12825 Resistor -4 ohm-flexible type- (R13 ) No. 11347 and 12700-Package of 5. 5034Resistor -56 ohm-carbon type -1/2 watt 4982 Spring-Retaining spring for knob Stock -Package of 5 (R11, R12) No. 12699-Package of 10 4814Socket -5 -contact vibrator socket 12829Switch-Power switch (S3) (8BT-8BK) 4284Spring-Fuse connector spring-Package 4285 Washer-Fuse connector insulating washer -Package of 10 (8BT-8BK) of 10