Patent ID: 9362842
Filing Date: 2016-06-07
CPC Classification: H02M,H03K,H05B

Claim Text:
1. A circuit for controlling a power variation of a load when powered with an A.C. voltage comprising: a first thyristor and a first diode electrically coupled between first and second nodes, the first diode having a cathode electrically coupled to the first node and an anode electrically coupled to the second node, the first thyristor having an anode electrically coupled to the first node and cathode electrically coupled to the second node; a second thyristor and a second diode electrically coupled between the second node and a third node, the second diode having a cathode electrically coupled to the third node and an anode electrically coupled to the second node, the second thyristor having an anode electrically coupled to the third node and a cathode electrically coupled to the second node; third and fourth diodes electrically coupled between the first and third nodes, the third and fourth diodes having respective cathodes directly electrically coupled to a fourth node and respective anodes directly electrically coupled to the first and third nodes, respectively; a transistor electrically coupled between the second and fourth nodes; and a control unit configured to control the first and second thyristors and the transistor.