Apparatus for deriving a feedback control signal in a...

Details Apparatus for deriving a feedback control signal in a... Apparatus for deriving a feedback control signal in a...

H - Electricity

05

B

341/15

H05B 1/02 (2006.01) G05D 23/24 (2006.01)

Patent

CA 1112737

ID 2356 APPARATUS FOR DERIVING A FEEDBACK CONTROL SIGNAL IN A THERMAL SYSTEM ABSTRACT OF THE DISCLOSURE Power is applied to an electrical element in maintaining a thermal system at stabilized conditions and a feedback signal is derived to control the electrical input to the heating element by linearly combining functions of the current through the heating element and the voltage drop thereacross respectively. In one embodiment, each of the linearly combined functions in the feedback signal can be varied independently to change the stabilized conditions of the thermal system, while in another embodiment a microprocessor is incorporated to provide such variation for a sequential range of stabilized conditions.

296984

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