Electronic ballast with full bridge circuit
    1.
    发明授权
    Electronic ballast with full bridge circuit 失效
    电子镇流器全桥电路

    公开(公告)号:US06876158B2

    公开(公告)日:2005-04-05

    申请号:US10414319

    申请日:2003-04-16

    摘要: An electronic ballast for controlling the operating behavior and brightness of a gas discharge lamp, includes a full bridge circuit fed with a d.c. voltage (UBUS). The gas discharge lamp is connected as a load of the full bridge circuit, and a control circuit in each case switches on one bridge diagonal and switches off another bridge diagonal of the full bridge circuit, alternatingly. The bridge diagonals each have a regulatable constant current source for regulating a lamp current, and thereby the occurrence of flickering appearances is suppressed. As a result, the lamp can be dimmed over a very wide range of brightnesses.

    摘要翻译: 用于控制气体放电灯的操作特性和亮度的电子镇流器包括一个全桥式电路,其供给直流 电压(UBUS)。 气体放电灯作为全桥电路的负载连接,并且每个情况下的控制电路交替地切换一个桥对角线并且交替地切断全桥电路的另一个桥对角线。 桥对角线各自具有用于调节灯电流的可调节恒流源,从而抑制闪烁外观的发生。 结果,灯可以在非常宽的亮度范围内变暗。