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41. 发明授权

US5740021A Switching power supply for the operation of electric lamps 失效
标题翻译：开关电源供电灯操作
公开(公告)号：US5740021A
公开(公告)日：1998-04-14
申请号：US737431
申请日：1996-11-11
申请人： Reinhard Lecheler , Franz Raiser
发明人： Reinhard Lecheler , Franz Raiser
IPC分类号： H05B41/24 , H02M1/12 , H05B37/02 , H05B39/04 , H05B41/285 , H02M5/458
CPC分类号： H05B39/045 , H02M1/12 , H05B41/2851
摘要： The invention relates to a radio interference suppression circuit for switching power supplies which are suitable for operating both discharge lamps and incandescent lamps. The radio interference suppression circuit has at least one controlled additional source (ZW, F) and one open-loop control circuit (TR1). The additional source or additional sources (ZW, F) generate targeted compensation signals, which are inverted with respect to the interference signals caused by the fast switching transistors (T1, T2). The additional source is either coupled parallel to the interference source and capacitively to the environment (ZW, F) or electrically connected into the supply leads in series with the interference source. In the first case, the additional source preferably includes a metal face (F), mounted in the vicinity of the switches (T1, T2), the potential changes of which face are inverted relative to those of the interference source--which is essentially the region around the junction point (M) of the switching transistors (T1, T2)--for instance by means of a transformer (TR1). In the second case, the additional sources are preferably formed by two secondary windings of the transformer. The primary winding is triggered by the potential changes of the interference source and in the secondary--side supply leads induces a phase-opposition common mode compensation signal. Optionally, the interference suppression can also be in the form of a closed-loop control circuit, in which the common-mode noise of the supply leads acts as the controlled variable.
摘要翻译： PCT No.PCT / DE95 / 00653 Sec。 371日期：1996年11月11日 102（e）日期1996年11月11日PCT提交1995年5月17日PCT公布。出版物WO95 / 33299 日期：1995年12月7日本发明涉及一种用于切换电源的无线电干扰抑制电路，其适用于同时操作放电灯和白炽灯。无线电干扰抑制电路具有至少一个受控附加源（ZW，F）和一个开环控制电路（TR1）。附加源或附加源（ZW，F）产生相对于由快速开关晶体管（T1，T2）引起的干扰信号而反转的目标补偿信号。附加源与干扰源并联耦合，并与电容耦合到环境（ZW，F）或电连接到与干扰源串联的电源线中。在第一种情况下，附加源优选地包括安装在开关（T1，T2）附近的金属面（F），其面部的电位变化相对于干涉源的电位变化，其基本上是开关晶体管（T1，T2）的接点（M）周围的区域，例如通过变压器（TR1）。在第二种情况下，附加源优选地由变压器的两个次级绕组形成。初级绕组由干扰源的电位变化触发，次级侧电源引线产生相位相反的共模补偿信号。可选地，干扰抑制也可以是闭环控制电路的形式，其中供电引线的共模噪声用作受控变量。

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