公开(公告)号：US20090224691A1

公开(公告)日：2009-09-10

申请号：US12044129

申请日：2008-03-07

申请人： Louis R. Nerone ,  Laszlo S. IIyes

发明人： Louis R. Nerone ,  Laszlo S. IIyes

IPC分类号： H05B37/02

CPC分类号： H05B41/39

摘要： The present application discloses a method and apparatus for providing an isolated set point from an input signal. The set point can control the amount of power applied to a lamp via a lamp ballast. An AC output signal from the ballast powers a dimming circuit. The AC signal is coupled across an isolation transformer and subsequently converted into a DC signal. This DC signal is loaded by a variable resistor, which creates a voltage differential across the resistor. This voltage differential is then seen across DC input terminals of the ballast, and it is across the DC input terminals that the set point is created. By varying the value of the resistor, the ballast set point is varied ultimately changing the power that is applied to the lamp by the ballast.

摘要翻译： 本申请公开了一种从输入信号提供隔离设定点的方法和装置。 设定点可以通过灯泡镇流器控制施加到灯的功率。 镇流器的交流输出信号为调光电路供电。 交流信号跨隔离变压器耦合，随后转换为直流信号。 该直流信号由可变电阻器加载，从而在电阻器两端产生电压差。 然后在镇流器的直流输入端子上看到该电压差，并且跨越直流输入端子创建设定点。 通过改变电阻器的值，​​镇流器设定点的变化最终改变通过镇流器施加到灯的功率。