会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 10. 发明专利
    • Dimming circuit for controlling luminance of light source, and method for controlling luminance of light source
    • 用于控制光源发光的调光电路及控制光源发光的方法
    • JP2010097927A
    • 2010-04-30
    • JP2009135074
    • 2009-06-04
    • Chunghwa Picture Tubes Ltdチュングワ ピクチャー チューブス リミテッドChunghwa Picture Tubes, Ltd.
    • LIU CHUN-FU
    • H05B41/24H02M7/48H05B41/392
    • H05B41/2822Y10S315/04
    • PROBLEM TO BE SOLVED: To provide a dimming circuit for controlling the luminance of a light source and a method for controlling luminance. SOLUTION: The dimming circuit 400 includes an inverter circuit 430 and a driving circuit 420. The inverter circuit 430 is electrically coupled to a light source 440 to be controlled, to convert a direct current (DC) power input into an alternating current (AC) power. The inverter circuit 430 includes a transformer 434, a capacitor C1 connected in parallel to the transformer 434, a plurality of switches S1 and S2 located at both ends of the capacitor C1, and an oscillating circuit 432 electrically connected to both ends of the transformer 434. The driving circuit 420 is electrically connected to the inverter circuit 430, for controlling the time period that the light source 440 is turned on. As the input of DC voltage into the transformer 434 is stopped, the driving circuit 420 opens the plurality of switches S1 and S2 in the inverter circuit 430, forming electrical isolation between the capacitor C1 and the transformer 434, which prevents voltage oscillation and stores the energy into the capacitor C1. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种用于控制光源的亮度的调光电路和控制亮度的方法。 调光电路400包括反相器电路430和驱动电路420.逆变器电路430电耦合到待控制的光源440,以将直流(DC)功率输入转换为交流电 (AC)电源。 逆变器电路430包括变压器434,与变压器434并联连接的电容器C1,位于电容器C1两端的多个开关S1和S2以及电连接到变压器434的两端的振荡电路432 驱动电路420电连接到逆变器电路430,用于控制光源440导通的时间段。 当变压器434中的直流电压的输入停止时,驱动电路420打开逆变器电路430中的多个开关S1和S2,形成电容器C1和变压器434之间的电隔离,从而防止电压振荡并存储 能量进入电容器C1。 版权所有(C)2010,JPO&INPIT