Heating element control

Details Heating element control Heating element control

1990-09-25

1992-07-07

Paschall, Mark H.

Electric heating

Heating devices

With power supply and voltage or current regulation or...

219505, 219506, 219494, 340584, H05B 102

Patent

active

051285169

ABSTRACT:
A heating element control includes a ceramic substrate having a resistance circuit thereon of a material having a positive temperature coefficient. A first comparator compares the resistance of the circuit with a first known resistance to control a signal light. A second comparator compares the resistance of the circuit with a second known resistance to control a heating element.

REFERENCES:
patent: 4074719 (1978-02-01), Semm
patent: 4103275 (1978-07-01), Diehl et al.
patent: 4165456 (1979-08-01), Dogliotti
patent: 4322594 (1982-03-01), Brisson
patent: 4518850 (1985-05-01), Grasso
patent: 4700051 (1987-10-01), Goessler et al.
patent: 4707587 (1987-11-01), Greenblatt
patent: 4816647 (1989-03-01), Payne

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