AFCI device

Details AFCI device AFCI device

2008-10-24

2011-12-06

Fureman, Jared (Department: 2836)

Electricity: electrical systems and devices

Safety and protection of systems and devices

Ground fault protection

C361S002000

Reexamination Certificate

active

08072716

ABSTRACT:
An arc fault circuit interrupter (AFCI) device prevents malfunction of an electric circuit and checks the state of the circuit and connection state of lines. One of a phase conductor line and a neutral conductor line is wound around a transformer which converts a current difference flowing in the AC line into voltage to detect whether an arc fault occurs, and a voltage induced by the wound line is rectified into direct-current and is converted into constant voltage to obtain power for the AFCI. An arc wave generator includes a rectifier to generate a rectified signal; a drop resistor which drops the voltage of the rectified signal to generate a voltage-dropped signal; and a mono-stable multivibrator which adjusts a voltage level and a pulse width of the voltage-dropped signal and generates a pulse signal that is used to generate a false arc for testing the AFCI.

REFERENCES:
patent: 6191589 (2001-02-01), Clunn
patent: 6198611 (2001-03-01), Macbeth
patent: 7538993 (2009-05-01), Huang et al.
patent: 2007/0025032 (2007-02-01), Bradley et al.

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