Defect detector circuit for inductive load driving circuit

Details Defect detector circuit for inductive load driving circuit Defect detector circuit for inductive load driving circuit

1987-06-08

1989-03-21

Pellinen, A. D.

Electricity: electrical systems and devices

Control circuits for electromagnetic devices

Systems for magnetizing, demagnetizing, or controlling the...

361 89, 361 91, H01H 4732

Patent

active

048149373

ABSTRACT:
A defect detector circuit for an inductive load driving circuit which has a surge comparator circuit for comparing a surge generated from an inductive load when the current of the inductive load is interrupted with a reference value on the basis of an output from a surge absorber circuit for absorbing the surge, and a surge time deciding circuit for outputting a defect signal when a time that the surge amount exceeds the reference value does not fall within a set range on the basis of the output from the surge comparator circuit.

REFERENCES:
patent: 3868625 (1975-02-01), Speigner et al.
patent: 4040250 (1977-08-01), Saunders et al.
patent: 4345564 (1982-08-01), Kawamura et al.
patent: 4377144 (1983-03-01), Takahashi
patent: 4400756 (1983-08-01), Cave et al.
patent: 4453194 (1984-06-01), Frankeny et al.

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