Method and circuit arrangement for detecting a wire break

Details Method and circuit arrangement for detecting a wire break Method and circuit arrangement for detecting a wire break

2006-01-25

2009-06-16

Dole, Timothy J (Department: 2831)

Electricity: measuring and testing

Fault detecting in electric circuits and of electric components

Of individual circuit component or element

Reexamination Certificate

active

07548070

ABSTRACT:
A method and a circuit are provided for the continuous detection of a line break in a full bridge controlling an inductive load. When the full bridge is switched off or on, a pre-determinable switching device of the circuit is switched first, and then a potential applied to a connection between the switching device and the load is tapped. The tapped potential is then compared with the ground potential when the switching device is connected to the supply potential, or with the supply potential when the switching device is connected to the ground potential. A line break is then determined when the two compared potentials are not different in the free running state thereof.

REFERENCES:
patent: 5111123 (1992-05-01), Hach et al.
patent: 5592097 (1997-01-01), Shimizu et al.
patent: 5684371 (1997-11-01), Tarui et al.
patent: 44 03 375 (1994-09-01), None

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