Load condition detecting and driving system

Details Load condition detecting and driving system Load condition detecting and driving system

1989-08-25

1990-10-09

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

Using a three or more terminal semiconductive device as the...

323284, 323285, 323351, 340652, 340661, 361 18, 361 79, 361 90, H02M 3335

Patent

active

049623508

ABSTRACT:
A load condition detecting a control system for supplying a load current to a load from a power source wherein, when said load exhibits a short circuit condition, a driving signal controlling the application of high current to the load is immediately pulled down, shutting-off the flow of high current to the load. Thus, even before a short circuit condition is detected by any logic means, the high current is disconnected from the load, preventing any possible damage to the load or other circuitry. The system also detects an open circuit load condition. Upon detection of either an open or a short circuit load condition, the system then blocks the driving signal from being applied to the driving circuitry until the system is reset.

REFERENCES:
patent: 3588612 (1971-06-01), Leathem et al.
patent: 3629622 (1971-12-01), Dewenberg, Jr.
patent: 3988661 (1976-10-01), McCoy
patent: 4127885 (1978-11-01), Adam et al.
patent: 4438498 (1984-03-01), Sekel et al.
patent: 4521725 (1985-06-01), Phaneuf
patent: 4574276 (1986-03-01), Sato

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