Device for identifying AC power supply arrangement

Details Device for identifying AC power supply arrangement Device for identifying AC power supply arrangement

2006-09-15

2008-11-04

Nguyen, Vincent Q (Department: 2831)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

With electric power receptacle for line wire testing

C324S537000

Reexamination Certificate

active

07446538

ABSTRACT:
A device for identifying an arrangement of an AC power supply. The device includes first and second voltage detecting circuits and a comparison logic circuit. The first voltage detecting circuit, coupled to ground and hot lines of the AC power supply, receives a first input signal from the hot line and detects the voltage level thereof to generate a first detect signal. The second voltage detecting circuit, coupled to ground and neutral lines of the AC power supply, receives a second input signal from the neutral line and detects the voltage level thereof to generate a second detect signal. The comparison logic circuit, coupled to the first and second voltage detecting circuits, generates first and second identification signals according to the first and second detect signals, indicating the arrangement of the AC power supply.

REFERENCES:
patent: 6462555 (2002-10-01), Schaefer

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