Method and corresponding circuit detecting an open load

Details Method and corresponding circuit detecting an open load Method and corresponding circuit detecting an open load

1996-05-15

1998-06-02

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 78, 327543, H03K 1718, G05F 1565

Patent

active

057606137

ABSTRACT:
A method for detecting an open load includes the use of a driver having at least one main power transistor connected to the load and one auxiliary transistor connected in parallel with the main transistor between a first power supply voltage reference and a second voltage reference. The method compares a first voltage present on a terminal connected to the load of the main transistor with a second voltage present on a terminal of the auxiliary transistor. A circuit for detecting an open load performs the method.

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patent: 5113089 (1992-05-01), Osawa
patent: 5220207 (1993-06-01), Kovalcik et al.
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patent: 5374857 (1994-12-01), Carobolante
patent: 5408141 (1995-04-01), Devore et al.
patent: 5438286 (1995-08-01), Pavlin et al.

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