Temperature controller

  
Temperature control is achieved using the REF-02 +5 V Reference/Thermometer and a CMP-02 Precision Low Input Current Comparator. The CMP-02 turns on a heating element driver (Ql) whenever the present temperature drops below a setpoint temperature determined by the ratio of Rl to R2
Temperature controller - schematic

The circuit also provides adjustable hysteresis and single supply operation.




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