High voltage phasing detector

Details High voltage phasing detector High voltage phasing detector

1994-04-14

1995-08-01

Wieder, Kenneth A.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Phase comparison

324678, 327 2, G01R 2728

Patent

active

054382556

ABSTRACT:
A detector for determining the phase of high AC voltages comprises two inputs for connecting to respective probes which contact the conductors to be tested, a rectifier circuit to which the inputs are connected, a chain of capacitors arranged to be charged in series from the output of the rectifier circuit, an operational amplifier configured as a trip amplifier for providing an output signal when the output voltage of the rectifier exceeds a predetermined value, and a transistor for discharging the capacitors in parallel through a buzzer and a chain of light emitting diodes when the output signal is provided.

REFERENCES:
patent: 2989698 (1961-06-01), Bennett
patent: 4547683 (1985-10-01), Bingham
patent: 4922402 (1990-05-01), Olivo et al.
patent: 5204674 (1993-04-01), Holben
patent: 5343157 (1994-08-01), Deschamps

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