Protection circuit for a semiconductor circuit
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United States of America Patent
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-
Dec 18, 1990
Grant Date -
N/A
app pub date -
Sep 13, 1988
filing date -
Sep 16, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A protection circuit for a semiconductor circuit for protecting it from a thunder surge and overcurrent or overvoltage. A surge absorbing element and a Zenor diode are in parallel connected to the semiconductor circuit. A first fuse are connected before between the electric source and the surge absorbing element. A second fuse and a resistor, which is in series connection, is arranged between the surge absorbing element and the Zenor diode.
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