Multiple range peak reading voltmeter

Details Multiple range peak reading voltmeter Multiple range peak reading voltmeter

G - Physics

01

R

324/70

G01R 19/04 (2006.01) G01R 15/08 (2006.01) G01R 19/14 (2006.01)

Patent

CA 1094160

ABSTRACT OF THE DISCLOSURE A voltmeter for selectively indicating the polarity and magnitude of a peak value of voltage. The voltmeter comprises an ammeter, a diode bridge including positive and negative terminals and first and second probe terminals, a capacitor connected to the positive and negative terminals, and variable resistance switching means connected in series to one of the positive and negative terminals for selectively coupling the ammeter across the positive and negative terminals. Filter switching means are provided for selectively coupling the probe terminals to a single polarity of the voltage whereby the voltmeter affords charging of the capacitor so that the magnitude of the positive voltage differential between the positive and negative terminals is substantially equal to the mag- nitude of the peak value of the single polarity of voltage coupled to the probe terminals.

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