METHODS AND APPARATUS FOR A DIMMABLE BALLAST FOR USE WITH LED BASED LIGHT SOURCES
    10.
    发明申请
    METHODS AND APPARATUS FOR A DIMMABLE BALLAST FOR USE WITH LED BASED LIGHT SOURCES 审中-公开
    用于基于LED的光源使用的二次压块的方法和装置

    公开(公告)号:US20090295300A1

    公开(公告)日:2009-12-03

    申请号:US12537464

    申请日:2009-08-07

    申请人: Ray James King

    发明人: Ray James King

    IPC分类号: H05B41/36

    摘要: Methods and apparatus for powering a dimmable ballast operating with LED light source(s) are provided. In one embodiment, the ballast circuit includes sections comprising: power input, full wave bridge rectifier, voltage regulator, integrated circuit driver, switching transistors, bypass capacitor, resonant circuit, rectifier diodes, and an LED light source. The resonant circuit receives energy from the voltage source and the bypass capacitor every switching cycle, and provides current to the rectifier diodes and one or more LEDs for generating light. Further, because the current flowing into the resonant circuit is substantially sinusoidal and in line with the input voltage, the circuit exhibits a desirable power factor. The ballast circuit can also effectively dimmed over a wide range using a phase angle dimmer, allowing further energy savings.

    摘要翻译: 提供使用LED光源操作的可调光镇流器的方法和装置。 在一个实施例中,镇流器电路包括包括:电源输入,全波桥式整流器,稳压器,集成电路驱动器,开关晶体管,旁路电容器,谐振电路,整流二极管和LED光源的部分。 谐振电路在每个开关周期从电压源和旁路电容器接收能量,并且向整流二极管和一个或多个用于产生光的LED提供电流。 此外,因为流入谐振电路的电流基本上是正弦的并且与输入电压一致,所以电路呈现期望的功率因数。 镇流器电路还可以使用相位角调光器在宽范围内有效地调光,从而进一步节能。