Load short-circuit failure detection method and apparatus and el

Details Load short-circuit failure detection method and apparatus and el Load short-circuit failure detection method and apparatus and el

1997-09-22

2000-08-22

Hofsass, Jeffery A.

Communications: electrical

Condition responsive indicating system

Specific condition

340 73, 318332, 318432, 318343, 324546, G08B 2100

Patent

active

06107926&

ABSTRACT:
A load short-circuit failure detection apparatus comprises load current drive means 8, load current control means 7, load current detection means 6 and load short-circuit failure judging means 9 and judges that a short-circuit failure occurs in a load when a state in which a load current detection value exceeds a predetermined value within a first predetermined time continues for a second predetermined time so that the load drive means can be protected, a short-circuit failure of the load can be detected, and the erroneous detection of a short-circuit failure caused by a transient overcurrent can be prevented.

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patent: 4987964 (1991-01-01), Tabuse
patent: 5483817 (1996-01-01), Renard et al.
patent: 5631529 (1997-05-01), Shimuzu et al.
patent: 5652487 (1997-07-01), Nishino et al.

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