PTC heating apparatus
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United States of America Patent
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-
Mar 31, 1987
Grant Date -
N/A
app pub date -
Oct 17, 1979
filing date -
Oct 11, 1979
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A PTC heating element with a honeycomb ceramic body comprising a barium titanate and semiconductor element, which provides the ceramic body with a positive temperature coefficient of resistance over the Curie point. An electrode is deposited on each end of the honeycomb body. The electrodes according to the present invention have a non-ohmic property, while the conventional electrodes have been ohmic. A high rush current and migration are advantageously decreased by the non-ohmic electrodes.
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