Ceramic thermistor heating element

Details Ceramic thermistor heating element Ceramic thermistor heating element

1989-06-23

1990-07-03

Envall, Jr., Roy N.

Electric heating

Heating devices

With heating unit structure

219504, H05B 310

Patent

active

049393499

ABSTRACT:
A building block-like PTC thermistor heating element is disclosed which comprises a ceramic semiconductor body having a positive temperature coefficient of resistance. The partition walls of the building block-like ceramic body provide the passages of the air flow. Ohmic electrodes are deposited on the opposite side of the major surface of the ceramic body so that when connected to an electrical source the electrical current flows across the partition walls in a direction normal to the axis of the air flow. The building block-like thermistor is very easy to fabricate and is very strong in structure so that high yield and improved mechanical strength can be achieved.

REFERENCES:
patent: 4162395 (1979-07-01), Kobayashi
patent: 4327282 (1982-04-01), Nauerth

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