我厂配铁电磁盘的供电控制,以前采用接触器,弧光较大,接触器的主触头烧坏频繁。在华主席抓纲治国伟大方针指引下,在科技大会精神鼓舞下,我们对配铁电磁盘的供电电路进行了改进。除续流回路外,直流主电路采用了可控硅控制,其原理如下图所示。 I plant with iron magnetic disk power supply control, the previous use of contactors, large arc, contactor main contact burned frequently. Inspired by the great guideline of China’s principle of stepping up the rule of the country and science and technology, and with the encouragement of the science and technology congress, we have improved the power supply circuit of the iron plate with iron. In addition to freewheeling circuit, the DC main circuit using SCR control, the principle as shown below.