Patent ID: 9065330
Filing Date: 2015-06-23
Classification: H02M

Abstract:
1. A method for controlling a circuit, comprising: receiving a sensed signal corresponding to a current flowing through an energy transfer module in response to an on/off state of a forward-type triode for alternating current (TRIAC), the TRIAC having at least three phases, a first phase dedicated to the TRIAC on state, a second phase dedicated to the TRIAC off state, and a third phase dedicated to charge a part of the TRIAC that wirelessly communicates with a control component external to the TRIAC, the third phase occurs at least once per each alternating current (AC) cycle of the TRIAC, the first, second, and third phases being non-overlapping, wherein a full range of the AC cycle of an interval from 0 to 2π has a first phase range of an interval from 0 to β dedicated to charge the part of the TRIAC, a second phase range of an interval from β to α dedicated to the TRIAC off state, a third phase range of an interval from α to π dedicated to the TRIAC on state, a fourth phase range of an interval from π to (π+α) dedicated to the TRIAC off state, and a fifth phase range of an interval from (π+α) to 2π dedicated to the TRIAC on state, the first, second, third, fourth, and fifth phase ranges being non-overlapping; determining the TRIAC on/off state based on the sensed signal; and controlling the energy transfer module based on the determined TRIAC on/off state.