公开(公告)号：US20030111968A1

公开(公告)日：2003-06-19

申请号：US10022643

申请日：2001-12-17

Applicant: OSRAM SYLVANIA INC.

Inventor： Grigoriy A. Trestman

IPC: H05B037/02

CPC classification number: H05B41/2928 ,  Y02B20/208 ,  Y10S315/07

Abstract: An apparatus and method to implement an electronic ballast for a high intensity discharge lamp having AC lamp current centered at approximately 300 kHz minimizes the ballast cost and utilizes modulation of the lamp current to avoid acoustic resonance. In order to minimize the number of additional components providing the modulation function, the ripple voltage produced by PFC circuit is fed through a capacitor to a FREQUENCY SET input of an inverter controller. The value of the capacitor can be chosen to produce the desired modulation range.

Abstract translation: 实现用于以300KHz为中心的交流灯电流的高强度放电灯的电子镇流器的装置和方法使镇流器成本最小化，并利用灯电流的调制以避免声共振。 为了最小化提供调制功能的附加元件的数量，由PFC电路产生的纹波电压通过电容器馈送到逆变器控制器的FREQUENCY SET输入端。 可以选择电容器的值以产生期望的调制范围。