公开(公告)号：US08358078B2

公开(公告)日：2013-01-22

申请号：US12242303

申请日：2008-09-30

Applicant: David Natarelli

Inventor： David Natarelli

IPC: H05B37/02 ,  H05B39/02 ,  H05B39/04 ,  H05B41/36 ,  H05B37/00 ,  H05B39/00 ,  H05B41/14 ,  H05B41/16 ,  H05B41/24 ,  H01J11/04 ,  H01J13/48 ,  H01J15/04 ,  H01J17/36

CPC classification number: H05B41/3925 ,  H05B41/28

Abstract: In one embodiment, a fluorescent lamp dimming circuit includes power factor correction control, dimming control, and switching devices. The power factor correction control may be connected to power factor correction circuitry that produces a regulated DC buss. The dimming control circuit may be connected to the input of the fluorescent lamp dimming circuit for producing a driver signal whose frequency varies depending on the input voltage waveform perhaps as modified by a dimmer. The control circuit may produce a drive signal with a duty cycle profile to drive switching devices. The switching devices invert the DC buss voltage to an AC voltage waveform for driving a resonant tank circuit. The resonant tank circuit may include an inductance, a capacitance, and the impedance of a fluorescent lamp. The AC voltage waveform when applied to the resonant tank circuit may cause the fluorescent lamp to dim based on the dimmer setting.

Abstract translation: 在一个实施例中，荧光灯调光电路包括功率因数校正控制，调光控制和开关装置。 功率因数校正控制可以连接到产生调节DC总线的功率因数校正电路。 调光控制电路可以连接到荧光灯调光电路的输入端，用于产生频率根据输入电压波形而变化的驱动器信号，或许可以通过调光器修改。 控制电路可以产生具有占空比轮廓的驱动信号以驱动开关装置。 开关器件将DC总线电压反相到用于驱动谐振回路的交流电压波形。 谐振回路可以包括电感，电容和荧光灯的阻抗。 施加到谐振回路的交流电压波形可能导致荧光灯根据调光器设置变暗。

公开(公告)号：US20090302772A1

公开(公告)日：2009-12-10

申请号：US12242303

申请日：2008-09-30

Applicant: David Natarelli

Inventor： David Natarelli

IPC: H05B41/14

CPC classification number: H05B41/3925 ,  H05B41/28

Abstract: In one embodiment, a fluorescent lamp dimming circuit includes power factor correction control, dimming control, and switching devices. The power factor correction control may be connected to power factor correction circuitry that produces a regulated DC buss. The dimming control circuit may be connected to the input of the fluorescent lamp dimming circuit for producing a driver signal whose frequency varies depending on the input voltage waveform perhaps as modified by a dimmer. The control circuit may produce a drive signal with a duty cycle profile to drive switching devices. The switching devices invert the DC buss voltage to an AC voltage waveform for driving a resonant tank circuit. The resonant tank circuit may include an inductance, a capacitance, and the impedance of a fluorescent lamp. The AC voltage waveform when applied to the resonant tank circuit may cause the fluorescent lamp to dim based on the dimmer setting.

Abstract translation: 在一个实施例中，荧光灯调光电路包括功率因数校正控制，调光控制和开关装置。 功率因数校正控制可以连接到产生调节DC总线的功率因数校正电路。 调光控制电路可以连接到荧光灯调光电路的输入端，用于产生频率根据输入电压波形而变化的驱动器信号，或许可以通过调光器修改。 控制电路可以产生具有占空比轮廓的驱动信号以驱动开关装置。 开关器件将DC总线电压反相到用于驱动谐振回路的交流电压波形。 谐振回路可以包括电感，电容和荧光灯的阻抗。 施加到谐振回路的交流电压波形可能导致荧光灯根据调光器设置变暗。