Patent ID: 9655178
Date: 2017-05-16
CPC Classifications: H02M,H05B

Claim:
1. An illumination device, comprising: a dimmer coupled to an AC main line to produce a rectified voltage at regular periodic intervals; a controller configured to determine conduction angles produced by the dimmer during the regular periodic intervals; a power supply coupled between the dimmer and the controller to activate a damping circuit coupled to the AC main line; wherein the power supply comprising a timing circuit operating at a clock speed no more than the regular periodic intervals, wherein the timing circuit is configured to activate the damping circuit during the duration of the intervals between the conduction angles and also during an initial portion of the duration of the conduction angles to remove transients from the AC main line; wherein the power supply is further coupled to activate a bleeding circuit also coupled to the AC main line; and wherein the timing circuit is configured to activate the bleeding circuit during the duration of every nth interval between the conduction angles and also during a final portion of the nth−1 duration of the conduction angles to remove voltage drift from the AC main line between the conduction angles.