Electronic thermostat circuit

  
Thermostat electric circuit as shown in FIG. It points to off (off), Lo (low power), Peru HL (high power) third gear. When DIP switch SA to Lo gear, 220V electricity through the diode VD4, VD56 added to the load RL ends; half-wave rectified by a diode so that RL was significantly lower than when the operating voltage 220v straight, so RL temperature drops.
Electronic thermostat circuit - schematic




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