Load dependent current limiter for the power supply of a multi-module electronic system
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United States of America Patent
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Jan 19, 1988
Issued Date -
N/A
app pub date -
May 15, 1987
filing date -
Jul 26, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A load-dependent current limiter for the power supply of a multi-module electronic system has a programming resistor in each module connected between the power supply voltage and a reference bus. The current through each programming resistor is proportional to the current requirements of the module. The voltage of the reference bus, which is proportional to the total current through all the programming resistors, is compared to the voltage developed across a sensing resistor by the total power supply current. When the sense voltage exceeds the reference voltage, indicative of tapping excess power, a signal is sent from the comparator to shutdown the power supply.
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