Patent ID: 9226357
Filing Date: 2015-12-29
Classification: H02M,H05B

Abstract:
1. A power supply device for use in supplying power to a semiconductor light-emitting element in response to a switch activation, the power supply device comprising: a DC output generation module configured to receive AC power, convert the AC power into DC power, and output the DC power; a semiconductor light-emitting element configured to receive the DC power output from the DC output generation module, and to emit light; a receiving part configured to receive a dimming signal which is output from a dimming signal generator; and a control module including a timer and configured to control the DC output generation module to dim the semiconductor light-emitting element in accordance with the dimming signal received at the receiving part only after a predetermined time period from the switch activation as determined based on the timer, wherein the DC output generation module comprises first and second secondary windings, the first secondary winding configured to provide power to the semiconductor light-emitting element, and wherein the second secondary winding is configured to provide power to the control module.