Temperature control system

Details Temperature control system Temperature control system

G - Physics

01

K

340/102, 340/159

G01K 7/22 (2006.01) G05D 23/24 (2006.01) H05B 1/02 (2006.01)

Patent

CA 1053344

Abstract of the Disclosure A temperature control system having an electric heating device selectively energizable by way of a gate controlled semiconductor switch according to indications from a temperature sensing element, The system employs an inte- grated monolithic semiconductor circuit having a plurality of differential amplifiers therein, each of which receives a temperature indicative signal and a reference signal for either high, low or preferred temperature, and the differential ampli- fier outputs are used to control the heating element energi- zation as well as to enable or disable high and low temperature indicators. A lockout function is derived from the high temperature indication to prevent the enabling of the heating element when a predetermined maximum temperature has been exceeded.

228445

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