Electric heating – Heating devices – With power supply and voltage or current regulation or...
Patent
1993-02-11
1995-08-08
Paschall, Mark H.
Electric heating
Heating devices
With power supply and voltage or current regulation or...
219505, 219497, 323236, 327452, H05B 102
Patent
active
RE0350133
ABSTRACT:
An improved temperature control circuit having a controller portion with an inhibit input and a temperature responsive circuit portion that includes a resistive portion connected in series with a sensor portion which establishes the control point for the control circuit, the improvement including a semiconductor switch in series with the sensor portion, the semiconductor switch having two electrodes between which a resistor is connected. The resistor is also connected to the inhibit input of the controller to present a signal to inhibit operation of the temperature control circuit when the sensor portion and semiconductor switch is not conducting.
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patent: 4816642 (1989-03-01), Dennison
Motorola Semiconductors, Semiconductor Description Brochure, CA 3079 (6 pages) (1977).
Griswold Gary L.
Kirn Walter N.
Lilly James V.
Minnesota Mining and Manufacturing Company
Paschall Mark H.
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