公开(公告)号：US06819014B2

公开(公告)日：2004-11-16

申请号：US10102804

申请日：2002-03-22

申请人： Chung Ping Kevin Lo ,  Hui Yu

发明人： Chung Ping Kevin Lo ,  Hui Yu

IPC分类号： H01H954

CPC分类号： H01H47/223 ,  H01F7/1811 ,  H01H47/32 ,  H01H2300/03 ,  Y02B70/3241 ,  Y02B90/224 ,  Y04S20/14 ,  Y04S20/227 ,  Y10T307/944

摘要： This invention relates to an electrical power switch which is a two-terminal electrical power switch having a line-powered switching control mechanism. The electrical power switch is provided with first and second shunt circuits between the terminals of the power outlet. This switch for power to operate through the outlet is included in a first shunt circuit that also contains a power supply operating from current flowing through the switch when in the “ON” condition. This first power supply can power a control means to control the operative state of the switch while current flows through. When the switch is in the “OFF” state, a second power supply contained in a second shunt circuit provides power to the control means.

摘要翻译： 本发明涉及一种具有线路供电切换控制机构的双端电力开关的电力开关。 电源开关在电源插座的端子之间设有第一和第二分流电路。 用于通过插座操作的电源的开关包括在第一并联电路中，该第一并联电路还包含当处于“接通”状态时从流过开关的电流工作的电源。 当电流流过时，该第一电源可为控制装置供电以控制开关的操作状态。 当开关处于“关”状态时，包含在第二分路电路中的第二电源向控制装置提供电力。

公开(公告)号：US08928241B2

公开(公告)日：2015-01-06

申请号：US12949684

申请日：2010-11-18

申请人： Chung Ping Kevin Lo ,  Kwok Hung Poon ,  Wa-Hing Leung ,  Kam Wah Siu

发明人： Chung Ping Kevin Lo ,  Kwok Hung Poon ,  Wa-Hing Leung ,  Kam Wah Siu

IPC分类号： H05B37/02 ,  H05B33/08

CPC分类号： H05B33/0845 ,  H05B33/0812 ,  H05B33/0815 ,  Y02B20/343

摘要： A circuit for driving a light emitting diode (LED) comprises: an alternating voltage power supply, comprising a triac dimmer having a firing angle and output terminals that provide power to the LED; a zero crossing detector that detects a polarity change of the alternating voltage provided by the alternating voltage power supply and provides a zero crossing output signal indicative of the zero crossing; a timer triggered by the zero crossing output signal that generates a timer output signal during a time period of the timer; and LED power circuitry that reduces current to the light emitting diode based upon timing characteristics of the timer output signal.

摘要翻译： 一种用于驱动发光二极管（LED）的电路包括：交流电压电源，包括具有触发角的三端双向可控硅调光器和向LED提供电力的输出端子; 检测交流电压提供的交流电压的极性变化的过零检测器，并提供表示过零点的零交叉输出信号; 由过零输出信号触发的定时器，其在定时器的时间段期间产生定时器输出信号; 以及基于定时器输出信号的定时特性降低到发光二极管的电流的LED电源电路。