RCA-Victor-Co-Inc-86BT 电路原理图.pdf

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1、PAGE GbELS86BK and 86BT Six -Tube, Three -Band, Battery Operated, Superheterodyne Receivers A,T.aC 10 PETC35 OSCCO 0000 KC.20000.,470 000A. PANE OUTPUT OREFN PUPt0 TRPN -AA 7 0PRTT. rte-1,8 Rt FOR PAR -0 PC37 OSC.G39 0Sr OPERATION, ONNECTGnoon.016001, GREEN LEAD TO -4 VT V TERMINAI Le0 400 KC. -SECI

2、a. PDJ- Radiotron, Coil, and Trimmer Locations Model 66iiK Electrical Specifications FREQUENCY RANGES Standard Broadcast (A)530-1,720 kcShort Wave (C)20,000 kc (osc.,det.,ant.) Medium Wave (B)2,100-6,800 kcMedium Wave (B)6,000 kc (osc.) Short Wave (C)6,800-22,000 kcStandard Broadcast (A). 600 kc (os

3、c.), 1,500 kc (osc.) Intermediate Frequency 460 kc RADIOTRON COMPLEMENT (1) RCA -1A4R -F Amplifier(4) RCA -1F6Second Det., A -F Amp., and A.V.C. (2) RCA- 106First Detector-Oscillator(5) RCA -30Audio Driver (3) RCA -1A4Intermediate Amplifier(6) RCA -19Push -Pull Power Output Pilot Lamps (2) Mazda 2.0

4、 volts, .06 ampere BATTERIES REQUIRED A, one plug-in, 21/2 -volt Air Cell, or one 2 -volt storage battery; B, three 45 -volt, heavy-duty, plug-in type B batteries; C, one 71/2 -volt C battery tapped at -11/2, -3, and -41/2 volts, and three bias cells (Stock No. 12681). CURRENT CONSUMPTION A at 2 vol

5、ts (pilot lamps off) 0.62 ampere A at 2 volts (pilot lamps on) 0.74 ampere B at 135 volts 21 milliamperes Fuse Rating Permanent-Magnet1/2Dyamnapmeriec POWER OUTPUT LOUDSPEAKER Undistorted1.2 wattsType Maximum2.2 wattsVoice Coil Impedance 2.2 ohms at 400 cycles Model 86BT Operation With CV -8 Pak-O-P

6、owr.-These receivers may readily be operated from an RCA CV -8 Pak-O-Powr, in which case,asix -volt storage battery replaces the A and B batterieslistedunderBatteriesrequired.When using the CV -8, one cell(2 volts) of the storage battery supplies filamentvoltagetothetubes,whiletheother twocells (4 v

7、olts)supplies power for the CV -8.When installing, the seven prong CV -8 receptacle plugs into the seven prong plug on the rear apron of the receiver chassis and the four batteryleadsclipon terminals of the storage batteryas follows: Red to + 6 V.; Blue to + 4 V.; Yellow to + 4 V:; and brown (fused

8、lead)to -V.The two four -volt leads (Blue and Yellow)should make separateconnectionsto the same battery strap to avoid vibrator buzz which might otherwise resultifthese two leads are joined together or touch each other.Observe extreme care that proper con- nections arc made to the battery, as a wron

9、g connection will burn out the tubes.The green lead (originally connected to - 3v. on the C battery) should be shifted to the -4.5 volttap.The otherCbatteryconnectionsremain unchanged. R -F ALIGNMENT FREQUENCIES The followingchanges under Electricalspecifications become effective when employing the

10、CV -8; A battery currentdrainat6volts,1.65amperes.Fuserating, 5 amperes.Undistorted output,1.3 watts.Maximum output, 1.8watts.Under Servicedata,the following voltages apply to the RCA -19 power -output tube.Either plate to chassis,180volts.Eithergridtochassis, - 41/2volts. Plate current (either plat

11、e),1.6 ma. When servicing,the CV -8chassisshould beinsulated from the receiver chassis to avoid vibrator buzz. Precautionary Lead Dress.-(1) Twisted leads fromfila- ment switch to power plug must be dressed against bottom of end shield and fastened with tape. (2) Lead from term. No. 6 -of S3 to chas

12、sis must be as short as possible and to same chassis lance as C15 -C34. (3) Keep lead from term. No. 9 of S3 to L7 -L8 as short as possible.(4) Keep lead from L7 to CI Ias short as possible.(5) Keep lead from C10 to C11 as short as possible.(6) Keep leads of C41 as short as possible.(7) Keep lead fr

13、om term. No. 20 of S2 to C13 as short as .ossible. AwnRCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN NJ USA 收音机爱 好者资料库 RadioFans.CN GA Cl 0.1 MED. SWITCH PROGRESSES IN TN IS DIRECTION N CS C311-490 4.7 MMF. Fl CS I 470 MMF. k - C4 2-20MNiF, Si Ri -A-pa 470,13004 L4 MOVABLE SEGMENTS (ROT

14、OR) RANGE SELECTOR SHOWN N A SAND POSITION. FOR -15- ANDSANDS, ROTATE KNOB CLOG /4 Wise . LI1 0.38 ACC 0.87a. 112 1.13 A C40 .01 MFD. LI4-.03.- 2-8IIBr MMF 19 -.-,7,O3frzsoomnir C37-3-3olow SZ CSCU 4.711-490 MMF.MMF. CIO; CIE IsTDET.3, OSC. RP:1LSz-iz.470 1A4tit L7 MWIFMMF.1C8 C7 .01 MR/ 0 = 0 LS -1

15、.4n OC (C:)./ uAr 51 o Ivga sir- R4 (56,000A C 821V. 680 aRCI9P1 CBEAL.Sq_4;07,1m3. - :050,000A -/- CTI 1 MMF. SECTION J C22-o.1MFDC23-.oiwo 31111111111111111MMIIIII R14 C16 110 MMF. CiT 56 MMF I,F. 1A4 Lt7L18 7.2n114. C14 82 MMF. - 0.05 MFD. PHONO. TERM. BRD. Linn CLOSED 1C26 FOR RADIO -1-1;0025MFD

16、 -,/2*DET.,A.VC. C28 4A.F-1F6 7110F C20 120 MMF. R.5 22000A 111-41, R7-* 22,000 A YI C24 C29 0035 MFD. RI3 1 MEG DRIVER rso OUTPUT 30Ti. .0025MFD 9 310 120,0004 CZ7 0.1 MFD. R11 )MEG. C31 .035 L16 4.3A C38.- 555-=- MME. C41 4500 w6.MMF. /6 MOVABLE SEGMENT,. (ROTOR) TIr -C39 ANT COIL CONNECTIONSDET.

17、COIL CONNECTIONS T-70787-0 =7-Cri 0.1 MFD. -Schematic Circuit Diagram OSC. COIL CONNECTIONS w IC R9 21.000 2700n. _.1) DIAL LAMPS , DIAL LAMP SWITCH (UN RANGE SELECTOR, 51.0.71) R17 0.33n USED ONLY FOR AIR -CELL OPERATION L.F. TRANS. CONNECTIONS C33C34 0.258MFD. MFD. I I q S4 ry.U(CCulT R15 .24 ONLY

18、 wHeN PAH- 0-POwPC IS USED POWER. PLUG CONNECTIONS 0.SAMP FUSE Fl Ell 45V 2/zv. 45V45V. BO/ 70470P E. F. TRANS. CONNECTIONS 32 0025 MFD. T2 POWER_ SSSW. a6 016A 1;11 r ,BASS 1. si ;TREBLE dfTONE. riq- CONTROL -TT, O SWITCH N SAME I SHAFT 253 DRIVER TRANS T1 - YELLOW 370R. - GREEN RL 630n -RED-BLACK

19、CONNECTIONS IlLuE 3IB, BLUE YOLOW- BLACK -REDBLACK - OUTPUT TRANS. CONNECTIONS 收音机爱 好者资料库 RadioFans.CN PAGE 344-B 86BK & 86BT 1/44ttt t (35V.)I c2V. 4V AC20V.!6V1F OV. 20. DET., L_Ic C.C.! A.F., ,1.5V. A.V. . 1F6t_132y._J C.G. ADJ. DET. COIL 2-I.F. TRANS. C.G. 15T DET.- OSC. -135V.7 561 A4V. 12L. OV

20、. c. d. - 2V. 115V. ADJ. 1.5.1.1.F. TRANS. I 106 1- t I2V(II I II IANT.I I DRIVER COILI II 30 II II 1L134v.-re /4 ) 6 L _ OUTPUT -0.1V. 19 07-h - .7 V.*)L _ _ 2120Y.MEASURE. _ 134y- _ SEE TEAT PLATE CURRENT lama. (4) N2 -P0134)4 N2 OP3.5M 56V, I N.4 -o.3ma. N. 5 _. 3 5f114. IN6 P. OR P. 1.2ma I1 t B

21、OTTOM VIEW- REAR OF CHASSIS.M-81817-0 Figure 4-Radiotron Socket Voltages, Coil, and Trimmer Locations Measured with all batteries at normal voltage-Tuned to approximately 1,000 kc- No signal being received-Volume control minimum *CAUTION: Do not attempt to measure voltage on control grid of the 106

22、with any conventional voltmeter due to presence of bias cells. Note: Two voltage values are shown for some read- ings.The higher value shown in parenthesis with as- terisk (*)indicates operating conditions without volt- meter loading. Alignment Procedure Calibrate the tuning dial by adjusting main d

23、ialpointer to the low -frequency (end) calibration mark on dial with the gangtuning -condenserplates infull -meshposition: then adjustthesmall(vernier) pointertoThese are friction adjustments. Order of Alignment Test Oscillator Receiver Dial Setting Circuit to Adjust Adjustment Symbols Adjust to Obt

24、ain Connection to Receiver Dummy Antenna Frequency Setting 1 1A4 I -F Grid Cap .001 Mfd.460 kc No Signal 550-750 kc 2nd I -F Trans. L19 and L20Max. (peak) 2 106 Det Grid Cap .001 Mfd4(10 kc No Signal 550-750 kc 1st I -F Trans. L17 and L18Max. (peak) 3Ant. Term.300 Ohms 20,000 kc20,000 kc C Osc. C35M

25、ax. (peak) * 4Ant. Term.300 Ohms 20,000 kc20,000 kcC Det. C10 Max. (peak) i 5Ant. Term.300 Ohms20,000 kc 20,000 kcC Ant. C4Max. (peak) t 6Ant. Term. 300 Ohms6,000 kc Rock Thru 6,000 kc -, 4, bi Osc. C37Max. (peak) * 7Ant. Term. 200 Mmfd.600 kc 600 kcA L -F Osc.L16 Max. (peak) 8Ant. Term. 200 Mmfd.1,

26、500 kc 1,500 kcA H -F Osc.C39 Max. (peak) 9Ant: Term.200 Mmfd. 600 kc Rock ThruA L -F Osc. 600 kc L16Max. (peak) 10Ant. Term. 200 Mmfd.1,500 kc Rock ThruA H -F Osc. 1,500 kc C39Max. (peak) * Use minimum capacity peak if two peaks can be obtained. t Use maximum capacity peak if two peaks can be obtained. After this adjustment, check for image signal by shifting receiver dialto 19,080 kc. 收音机爱 好者资料库 RadioFans.CN