Inverter current load detection and disable circuit

Details Inverter current load detection and disable circuit Inverter current load detection and disable circuit

1993-03-04

1995-05-30

Sterrett, Jeffrey L.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

315225, 361 91, 361101, H02M 7122

Patent

active

054207797

ABSTRACT:
A circuit and method for protecting a voltage inverter circuit is disclosed. The circuit comprises a first comparison circuit capable of comparing a first reference voltage to a voltage indicative of the load current of the voltage inverter. When the comparison circuit signals that the first reference voltage is greater than the load voltage, a disable circuit coupled to the first comparison circuit disables the voltage inverter. In the preferred embodiment, the inverter provides power to a cold cathode fluorescent lamp which, if damaged, can harm the inverter.

REFERENCES:
patent: 3889153 (1975-06-01), Pierce
patent: 4330736 (1982-05-01), Perper
patent: 4461980 (1984-07-01), Nilssen
patent: 4616158 (1986-10-01), Krummel et al.
patent: 4716343 (1987-12-01), Lindqvist
patent: 4739462 (1988-04-01), Farnsworth et al.
patent: 4952848 (1990-08-01), Erhardt
patent: 5063490 (1991-11-01), Maehara et al.
patent: 5111114 (1992-05-01), Wang
patent: 5142202 (1992-08-01), Sun et al.
patent: 5170099 (1992-12-01), Ueoka et al.

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