Temperature sensitive device

Details Temperature sensitive device Temperature sensitive device

1986-12-03

1988-08-09

Goldberg, E. A.

Electrical resistors

Resistance value responsive to a condition

Current and/or voltage

338306, H01C 304

Patent

active

047630990

ABSTRACT:
A heater comprises a substrate having an electrically-insulative ceramic coating and a heater track deposited on the coating and electrically connected to a power supply via ends. The heater track consists of a composite material having predetermined proportions of a metal and a material capable of undergoing a reversible change in volume at a predetermined phase transition temperature. The change in volume changes the proportions of metal to material and thus changes the resistivity of the composite material, so that the heater can be used as a self-regulating thermal cut-out device by limiting its own heat output to the phase transition temperature.

REFERENCES:
patent: 4380749 (1983-04-01), Eichelberger et al.
patent: 4603008 (1986-07-01), Tosaki et al.
patent: 4642136 (1987-02-01), Furushima et al.

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