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ORWH-SS-112D1F,000

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Simple Temperature Regulator

Simple temperature regulator

Circuit description

The temperature controller uses as a temperature transducer a thermistor connected diagonally to a Wheatstone bridge. Transistors Q1 and Q2 form a flip-flop amplifier with a hysteresis loop in the 'YES / NO' system. This hysteresis is ensured by the value of resistor R5. If you want to increase the hysteresis effect to about 3% of the default value, using the RV1 potentiometer, then the value of R5 will increase to 100R. The temperature control range is +30 ... 95 * C. The thermistor should have an 10KOhm resistance at 25*Celsius .

Bill of materials available in the download section, and the schematic as well.

Schematic and Layout

circuit

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Dec 29,2021

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Simple Temperature Regulator

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Published: Dec 29,2021

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