Power switching circuit
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United States of America Patent
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-
Mar 8, 1994
Issued Date -
N/A
app pub date -
Jul 27, 1992
filing date -
Feb 29, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
When a current that flows into a power output element is greater than a predetermined value, pulse width-modulated signals are formed which vary in inverse proportion to the current value in order to drive the power output element. When an excess current flows into the power output element, therefore, the power output element is allowed to intermittently operate for only short periods of time, and the current can be decreased during the current-limiting operation.
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