RCA-Victor-Co-Inc-CV-8 电路原理图.pdf

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1、PAGE i60-B MODEL CV -8 PAK-O-POWR The RCA Victor Model CV -8 Pak-O-Powr is a compact, self-contained, power - conversion unit which operates from a 6 -volt storage battery and supplies all A and B power required to operate RCA Victor Receiver Models 85BK, 85BT, 86BK, or 86BT. Battery Required:One6 -

2、volt storage battery tapped at+4 volts(4 volts for CV -8 and 2 volts for receiver tubes). Current Drain:1.65 amperes to supply 4 ma. at 180 volts and 18 ma. at 135 volts. BROWN 3 RNIP. 1-.1L2 016A C.I +4V 0.2i MFO. 0.25 NIF-D u st3 + 4V VII cc ILJ CV -8 PAK-O-PWR Failure to Start: BLUE O BROW N VIE,

3、RFITOR UNIT ofzY acS Cs REEN YELLOW L4. IS Erratic action of the vibrator or its failure to function, after the unit has been standing idle foranextendedperiodinthe presenceof moisture or high atmospheric humidity, may be due to a temporary oxidation of a small spot on one of the primary tungsten co

4、ntacts. The con- dition can be readily and satisfactorily rectified by apply six volts (instead of normal four volts) from a fully charged battery to the vibrator in- put for approximately 80-60 seconds. To do this, connect the negative (- six voltsof six volt battery to the Brown lead, and the posi

5、- tive(plussixvolts) tothe yellow lead; disconnect seven -contact plug from receiver, and interconnectitsterminals No. 1and No.2 (yellow and white) so as to close the circuit. Filament leads, Red and Blue, should not be attached to battery during application of higher voltage tovibrator. This proced

6、ure produces momentary overheatingofthe contacts, and thoroughly cleans their surfaces so that normal operation results. STOCK No. DESCRIPTION 4289 Body - Fuse holder female body. 4288 Bushing - Fuse holder bushing and ferrule. 14423 Cable -Battery cable complete, connects bat- tery to vibrator to r

7、eceiver. 4288 Cap - Fuse holder male cap. 11854 Capacitor - 0.01 mfd (C3, C4). 4841 Capacitor - 0.1 mfd (C8). 4840Capacitor - 0.25 mfd (C1, C2)- 13048Capacitor - 8 mid (C5). 14289 Clip - Two battery clips, one marked9-1-* and one unmarked. 12819Coil - Choke coil and terminalboard assembly (L3). YELL

8、OW BLUe- RED ZOA BLRCK -3 L3 Fib.ds.1,.,;3c 8MF-D.0.IMFD .n. C5IctiT 5Co I 1C31-.0IMFD. ITR2 I50,A. 14 -GROUNDED THROUGH? BASE 2,700.1L REEK -5 OFRONTVIeN -.7 OF- PLUG Schematic Circuit Diagram MODELS 6BT, 6BK, 8BT, 8BK Operation With CV -8 Vibrator Unit: It is possible to use the standard Model CV

9、-8 vibrator unit in conjunction with the above 2 - voltbatterymodelsfor6 -voltoperationby effecting the following changes, employing the cable connector and power switch which are part of the existing 2 -volt receivers: (a) Remove connector (Stock No. 12791) from battery cable of 2 -volt set and ins

10、tallitin place of connector on CV -8cable,con- nected as shown above. (b) Remove all external connections from power switch (Stock No. 12829) and wire CV -8 cabletoswitchasshown.Jumpers on switch may be left intact, except add D. (c) Add 4 -ohmresistor(StockNo.12825) across 2 -volt circuit at switch

11、 as shown. Note that A, B and C are new leads which must be added to cable assembly. REPLACEMENT PARTS STOCK INo. 12179Coil -Choke coil (Li, L2). 5140Fuse - 5 ampere (F1). 4290Insulator - Fuse holder insulating sleeve. 14419Mounting - Rubber mounting for vibrator chas- sis. 14409Plug -7-contact fema

12、le plug for battery cable 13220 Resistor- 58ohms,carbon type, 1/4 watt (111, R2). 14421Resistor - 2700ohms, insulated,1watt(R3) 4284Spring - Fuse holder tension spring. 14420Transformer - Vibrator transformer (Ti). 14422Vibrator - Plug-in vibrator unit (L4). 4285Washer - Fuse holder insulating washe

13、r. M-81800-0 A-VUSEI +6v *-7-RED +4V BATTERY +45ZYPE3LLOW VIBRATOR CONN. (BOTTOM VIEW) POWER SWITCH STOCK.10529 SW SHOWN IN OFF POSITION (REAR VIEW) Circuitfor Using CV -8 Vibrator Unit with Models 6BT. 6BK, 8BT, 8BK. BROWN LEXB.RESISTORLE 4- OHMS STOCK *12825 WHITE C /-8 VIBRATOR UNIT L-1I BLACK GREEN CONNECTOR FROM POWER CABLE STOCK 12791 DESCRIPTION RCA VICTOR DIVISION OF RADIO CORPORATION OF AMERICA, CAMDEN N. J., U. S. A 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN