Eight PTC phase asynchronous motor protection circuit


Posted on Nov 10, 2015    9518

The thyristor control circuit, with the bridge circuit to control the temperature in the contactor coil KM plus a secondary winding wound as


Eight PTC phase asynchronous motor protection circuit
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a power protection device. R. thermistor , (R:., Rt3) and a resistor R. (Rz, Rs) string associated voltage divider, the diode gates (VDi, VD2, VD3) VT unijunction transistor with the emitter connected in a bridge circuit having switching characteristics.




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