This circuit can be used in broilers, greenhouses, drying chambers to regulate the temperature in a simple and precise way. The heating element can have a maximum current of 6 A with the used Tríac. This Tiac must have a good heat radiator. The NTC, used as a temperature sensor, must have a resistance of approximately 10k ohms at room temperature and the adjustment of the operating point is made in the trimpot. The Triac must have voltage according to the power network, with the values indicated for the 220 V network.
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