Medical current limiter
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United States of America Patent
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Jun 2, 1998
Grant Date -
N/A
app pub date -
Jan 11, 1996
filing date -
Jan 11, 1996
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A medical current limiter protects medical electrodes and associated diagnostic apparatus from overcurrents. The medical current limiter includes first and second external terminal connections and first and second cascade circuits, each formed of a pair of n-channel field effect transistors and a p-channel field effect transistor consecutively connected in series between one of the first and second external terminals and a low value resistor. The p-channel field effect transistor and one of the n-channel field effect transistors connected thereto in each cascade circuit have a pinch-off voltage of less than 0.7 volts.
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