McMurdo-Silver-Inc-VOMAX 电路原理图.pdf

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1、MANUAL OF 1947 MOST-OFTEN-NEEDED RADIO DIAGRAMS D.C volts 3, 12, 30, 120, 300 and 1200 at 51 megohms con stant input resistance (1 megohm in capacity-isolating test prod). Same six ranges in reverse polarity by shift of FUNCTION knob. Accuracy 3%. D.C. volts 7.5, 30, 75, 300, 750 and 3000 at 126 moh

2、nis constont input resistance (obtained at Vx2.5 and COM- GND jacks). Same six ranges in reverse polarity by- shift of FUNCTION knob. Accuracy =*=3%, A.C. volts 3, 12, 30, 120, 300 and 1200 volts at circuit loading equivalent to 6.6 megohms shunted by 50 njmfd. (diode probe plugged into panel socket

3、). Accuracy 5%. R.F. volts same as A.C. volts but Ot circuit looding eiyjivqlent to 6.6 megohms shunted by 8 mmfd. (diode probe with drawn for direct contacting to circuit to be. measured). Accuracy *5%. OHMS: Six resistance ranges, all zero-left, of 2,000, 20,000, 200,000 ohms and 2, 20 and 2,000-m

4、egohms. Ac curacy 2% of full scale, =*=1% of indicated re- sistonce. DECIBELS: Three db. ranges (O db. =1 milliwatt in 600 ohms) of -10/-f-10, -f-10/-f30 and -f-30/-f-50 db. k CURRENT: Six direct current ranges of 1.2, 30, 120, 300 R 1200 milliamperes and 12 amperes. S c V2S0C. C0M-6N0 rV-Jl-MA 12A

5、S f i ? T r 6ALS bfe= PARTS LIST Cl 0.0005-ufd. silver-mica C2 0.001-ufd. mica C3 0.03-ufd. 3000-volt tubular oil C4 0.005-ufd. mica C5, C6 8-ufd. 350-volt electrolytic R1 20-megohm, 5 per cent, J-watt carbon resistor R2, R9 7.5 megohms, Yi watt metalized resistors* R3 1.5 megohms, H watt metalized

6、resistors* R4, R11 750,000 ohms, H watt metalized resistors* R5 250,000 ohms H watt metalized resistors* R6, R7, R8 37.5 megohms, watt metalized resistors* Rio 3.75 megohms, H watt metolized resistors* R12 375,000 ohms, H watt metalized resistors* R13 125,000 ohms, H watt metalized resistors* R14 10

7、-ohm, 1 per cent Yl watt wire-wound R15 100 ohms, Yi watt metalized resistors* R16 1,000 ohms, Y waft metalized resistors* R17 10,000 ohms, Y watt metplized resistors* R18 100,000 ohms, Y watt metalized resistors* R19 10 megohms, Y wott metalized resistors* , R20, R21, R41 5.1 megohm, 5 per cent, Yi

8、 watt metalized R22, R23, R24, R25, R26 3(500 ohm wire-wound potentiometer R-27 258.4 ohm, 1 per cent wire-wound resistor R28 1.758 ohm, 1 per cent wire-wound resistor R29 0.423 ohm, 1 per cent wire wound resistor R30 0.161 ohm, 1 per cent wire-wound resistor R31 0.028 ohm, 1 per cent wire-wound res

9、istor R32 Special-Set in test 1b give 12-ampere range R33 10,(500 ohm, wire-wound potentiometer with s.p.s.t. switch D R34 3000 ohm wire-wound potentiometer 3 R35, R36, R37, R40 43,000 ohms, 5 per cent, 2 watt R38, R39 4,300 ohm, 5 per cent, Yi watt metalized resistors. R42 10 megohm potentiometer 5

10、1 5-position, 6-circuit, 3-section ceramic switch 52 5-circuit, 6-position, 5-section ceramic Switch (front section shorting) T Power Transformer; 115-voit, 50/60 primary,- 5-voits, 2 amp.,- 6.3 voits, 1.6 amp.; 640 volts, 50 ma. Pairs of I.R.C. BT-Y resistors matched in series to give specified values. VO MAX 收音机爱 好者资料库 RadioFans.CN