公开(公告)号：US20040183450A1

公开(公告)日：2004-09-23

申请号：US10782853

申请日：2004-02-23

申请人： PATENT-TREUHAND-GESELLSCHAFT FUR ELEKTRISCHE GLUHLAMPEN mbH

发明人： Olaf Busse ,  Bernhard Schemmel

IPC分类号： H05B039/00

CPC分类号： G01R23/173 ,  G01R23/07 ,  G01R23/14 ,  H05B41/2828 ,  H05B41/295

摘要： The invention intends to improve the determination of the resonant frequency of a resonant circuit, in particular of a heating circuit for a discharge lamp. For this purpose, the frequency of a supply voltage for the resonant circuit is varied within a predetermined frequency range. The voltage or the current across/in the resonant circuit are measured as a function of the varied frequency. The predetermined frequency range is run through in both directions, in each case a maximum for the measured voltage or the measured current being established. The resonant frequency is preferably calculated from the two maxima by averaging.

摘要翻译： 本发明旨在改进谐振电路的谐振频率的确定，特别是用于放电灯的加热电路。 为此，谐振电路的电源电压的频率在预定的频率范围内变化。 作为变化频率的函数测量谐振电路中的/电流的电压或电流。 预定的频率范围在两个方向上运行，在每种情况下都是测量电压或测量电流的最大值。 谐振频率优选通过平均从两个最大值来计算。