荧光灯绝大多数为阴极预热式产品。人们为了提高荧光灯管的光效并延长其使用寿命,在配套电器方面作了大量深入的研究工作,包括镇流器线路拓扑的选择和阴极预热方式的选择等。以期电子器件与对应的荧光灯管相匹配,达到充分发挥荧光 The vast majority of fluorescent lamps for the cathode preheat products. In order to improve the light efficiency of fluorescent tubes and prolong their service life, a great deal of research work has been done in the field of electrical appliances, including the choice of ballast circuit topology and the selection of cathode preheating methods. In order to match the corresponding electronic devices and fluorescent tubes, to achieve full fluorescence