Patent ID: 6788023
Filing Date: 2004-09-07
Classification: H02P

Abstract:
A motor starter circuit for compressors of refrigerators, comprising a starter device, adapted to be connected to a starter winding and to a steady-state winding of an asynchronous motor, said windings being in turn connected to a power supply line, wherein said starter device comprises a rectifier bridge adapted to supply a switching device, a gate terminal of said switching device being supplied by means of a resistive-capacitive network, a capacitive divider supplied by said bridge, a voltage drawn across said capacitive divider being adapted to supply a transistor which is series-connected to said resistive-capacitive network, said starter winding being supplied until said transistor starts conducting, said switching device being switched off when said transistor switches on, and wherein said resistive-capacitive network comprises a resistor and a capacitor which are connected in series, said capacitor being provided with a discharge resistor connected in parallel thereto.