THERMOSTAT Russian patent published in 2014 - IPC G05D23/24 

FIELD: heating.

SUBSTANCE: thermostat consists of a temperature-sensitive bridge including the first thermistor, an operational amplifier, a voltage stabiliser, two field-effect transistors and the second thermistor. The temperature-sensitive bridge is connected to the inputs of the operational amplifier which is switched on with positive feedback. The output of the operational amplifier is connected to the gate of the first transistor. The source of the latter is connected to the voltage stabiliser and the drain - to the common point. The drain of the second field-effect transistor is connected to the output of the operational amplifier and the gate of the first field-effect transistor, and the gate of the second field-effect transistor is connected to the source of the first field-effect transistor. The second thermistor is set between the drain and the source of the second field-effect transistor.

EFFECT: minimisation of time for operational temperature setting in a thermostat.

2 cl, 2 dwg