As shown in the picture is the Russaell Hobbs steam iron circuit. The steam iron temperature controller circuit is a steam iron temperature controller. In addition to the automatic temperature control of the steam iron, it can also cut off the working power when the water is short in the iron to prevent the electric heater from being Dry water.
The steam iron temperature controller circuit is composed of a power circuit, a water level detecting circuit, a temperature detecting circuit and a control executing circuit. When the power is first turned on, the resistance of RT is large. N2 outputs a high level because the voltage of the positive phase input terminal is higher than the voltage of the inverting input terminal, so that V3 is saturated and turned on, K is pulled in, and its normally open touch The head turns on the working power of the electric heater EH in the steam furnace, and the EH starts to heat up, so that the steam furnace starts to heat up.
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