Circuit for detecting a short circuit in a low side driven load

Details Circuit for detecting a short circuit in a low side driven load Circuit for detecting a short circuit in a low side driven load

1994-12-15

1996-02-13

Pellinen, A. D.

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific quantity comparison means

361 86, H02H 318

Patent

active

054916011

ABSTRACT:
A circuit is provided for detecting a short circuit in a remote low-side driven load wherein a single conductor is used to both transmit a control signal from a microprocessor controller through a local driver to the remote driver of the load and also to transmit fault signals from the remotely driven load back to the control means. A control signal is transmitted from the microprocessor controller through a local driver circuit to a remote driver circuit on a single conductor. A short circuit at the remote load causes a fault signal to be latched for later detection by the microprocessor and a short circuit at the local driver is immediately detected.

REFERENCES:
patent: 4355341 (1982-10-01), Kaplan
patent: 5138516 (1992-08-01), Chapman
patent: 5166852 (1992-11-01), Sano

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