G - Physics – 05 – D
Patent
G - Physics
05
D
341/32
G05D 23/20 (2006.01) G05D 23/24 (2006.01)
Patent
CA 2032920
F.N. 44341 CAN 1A 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.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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