Power up reset circuit for line powered circuit
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United States of America Patent
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Aug 22, 2006
Grant Date -
N/A
app pub date -
Aug 3, 1999
filing date -
Aug 3, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A system for powering up an electronic circuit with telephone line power such that the electronic circuit does not enter a lockup state. The system includes a voltage detector that measures the voltage across the telephone line and a switch coupled with the voltage detector. The voltage detector generates a Reset signal when the measured voltage exceeds a selected voltage level, and the switch applies power to the electronic circuit in response to the generated Reset signal.
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