Electrical device comprising a PTC or NTC composition

Details Electrical device comprising a PTC or NTC composition Electrical device comprising a PTC or NTC composition

1987-02-24

1989-01-31

Goldberg, E. A.

Electric heating

Heating devices

With heating unit structure

219544, 219553, 338 22R, H05B 310

Patent

active

048017841

ABSTRACT:
A self-regulating PTC heater in which the direction of flow of current is reversible in a region of the PTC material in response to a change in the resistivity of the material whereby current in-rush is reduced.

REFERENCES:
patent: 4314145 (1982-02-01), Horsma
patent: 4330703 (1982-05-01), Horsma et al.
patent: 4330704 (1982-05-01), Jensen
patent: 4331860 (1982-05-01), Roller et al.
patent: 4334148 (1982-06-01), Kampe
patent: 4341949 (1982-07-01), Steiner et al.
patent: 4475138 (1982-10-01), Middleman et al.
patent: 4574188 (1986-03-01), Midgley
patent: 4654511 (1987-03-01), Horsma et al.
patent: 4659913 (1987-04-01), Midgley

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