Arc detection and cut-out circuit

Details Arc detection and cut-out circuit Arc detection and cut-out circuit

1995-08-17

1997-04-08

Epps, Georgia Y.

Electric lamp and discharge devices: systems

Periodic switch in the supply circuit

Periodic switch cut-out

315119, 315125, 315DIG5, 315DIG7, H05B 3702

Patent

active

056191057

ABSTRACT:
An arc detection and cut-out circuit is connected to an electronic ballast to detect when arcing occurs and to disable the ballast when arcing occurs. The arc detection and cut-out circuit is comprised of a current detector and a shunt circuit. The current detector detects the current in the electronic ballast to determine if arcing has occurred. If detected, the current detector causes a shunt circuit to shunt the power inverter of the ballast shutting it down. The arc detection and cut-out circuit prevents the power inverter from starting up until the power to the ballast is cycled off and back on.

REFERENCES:
patent: Re32904 (1989-04-01), Pacholok
patent: 4503363 (1985-03-01), Nilssen
patent: 4939427 (1990-07-01), Nilssen
patent: 5142202 (1992-08-01), Sun et al.
patent: 5179490 (1993-01-01), Lawrence
patent: 5280404 (1994-01-01), Ragsdale
patent: 5291099 (1994-03-01), Gill et al.

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