Driven by a small DC motor (often 12V or 18V) powered by a small internal transformer or power supply board.
A manual bellows-style pump that works without electricity. 2. Operational Logic (How the Circuit Works) shema jelektrochajnika termosa
): A bimetallic switch that cuts power to the boiling element once is reached. Keep-Warm Thermostat/Sensor ( RTcap R cap T Driven by a small DC motor (often 12V
), the keep-warm thermostat closes, activating the low-power heater until the water is back to the target temperature. Operational Logic (How the Circuit Works) ): A
Once boiling, the main thermostat opens its contacts. The circuit then redirects power through the secondary "Keep-Warm" TÉN or a control relay.
) that permanently breaks the circuit if the thermostats fail and the pot overheats dry.
If the device has no power at all, the thermal fuse ( ) is often the first thing to check with a multimeter.