以往的固体激光器电源,如谐振充电型和L-C恒流充电型电源,都是用变压器对50Hz交流电压进行变压,并实现与电网的隔离。如图1所示。50Hz二频主变压器笨重、昂贵。实现无二频主变压器的固体激光器电源,长期以来是有关工程技术人员的努力目标。七十年代以来出现的开关变换型电源,彻底抛弃了在50Hz下用变压器进行电压变换的方法。先将50Hz交流直接整流成直流,再采用开关变换电路将此直流变换成中频交流(如 In the past, solid-state laser power supplies such as resonant charging and L-C constant current charging type power supplies used transformers to convert 50 Hz AC voltage and achieve isolation from the power grid. As shown in Figure 1. 50Hz two-frequency main transformer bulky, expensive. The realization of a solid-state laser power supply without a two-frequency main transformer has long been a goal of engineering and technical personnel. Since the seventies switching power supply appeared completely abandoned at 50Hz voltage transformer with the method of conversion. First 50Hz AC direct rectification into DC, and then use the switching converter circuit to convert this DC to IF exchange (such as