High-voltage protection device of coil driving device
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United States of America Patent
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N/A
Issued Date -
Aug 3, 2006
app pub date -
Jan 31, 2005
filing date -
Jan 11, 2005
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A high voltage protection device applied to a coil driving device of a DC fan and motor. The coil driving device is connected to the high voltage protection device that has an activation control unit connected to the coil driving device, a logic operation unit that has two input terminals connected to a protection activation signal source and the activation control unit, a high voltage protection unit connected to an output terminal of the logic operation unit and the driving device. When the voltage of the coil driving device is higher than a predetermined value, the potential of a digital signal output is adjusted high and input to the logic operation unit. By logic operation performed on the input digital signal and another digital signal obtained from a protection signal source, a signal is generated to activate the high-voltage protection device, and the operation voltage of coil driving device can return to normal value.
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