Low power voltage clamp circuit
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United States of America Patent
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Oct 17, 1989
Grant Date -
N/A
app pub date -
Dec 15, 1987
filing date -
Dec 15, 1987
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The voltage clamp circuit can clamp positive and/or negative voltages. The voltage clamp circuit includes voltage sensing and clamping circuit consisting of a chain of series connected diodes connected between an output and a reference terminal of the voltage clamp circuit. A current mirror circuit is connected to the chain of series connected diodes. A current generating circuit is connected to the current mirror circuit and sensing and clamping circuit. The voltage clamp circuit consumes only enough current to develop a threshold voltage across each of the chain of series connected diodes.
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