Patent ID: 9497807
Filing Date: 2016-11-15
CPC Classification: H05B,Y02B

Claim Text:
1. An apparatus comprising: a dimmer circuit coupled to an electronic load and configured to receive an alternating current (AC) signal from an AC source; a phase control circuit configured to turn the dimmer circuit on for a first portion of the AC signal to transfer energy from the AC source to the electronic load, wherein the dimmer circuit turns off during a second portion of the AC signal to stop transferring the energy from the AC source to the electronic load; a sensing circuit configured to detect a conduction state of the dimmer circuit; a switch coupled to the phase control circuit; and a driver circuit coupled to the sensing circuit and the switch, wherein the switch is part of a power supply supplying power to the electronic load, when the sensing circuit detects that the dimmer circuit is in a non-conduction state, the driver circuit controls the switch to couple the dimmer circuit and the phase control circuit to ground, and the driver circuit includes: