最近,我们装了一台交流电焊机无载节电开关,这种装置原理简单、节电显著、制作容易、成本低廉,经实际使用效果很好,现介绍如下: 使用时,合上刀闸,电焊机一次侧经电容C降压,在二次侧只感应出6伏左右的电压,但这时因焊把开关K未闭合,所以,电焊机处于节电状态。焊接时,只要闭合焊把开关K,继电器J得电闭合,使主接触器JC接通, Recently, we installed a AC electric welder no-load switch, this device is simple in principle, saving significant, easy to make, low cost, the actual use of good results are as follows: When used, close the switch , The primary side of the welding machine step-down by the capacitor C, only 6 volts induced in the secondary side of the voltage, but this time because the welding switch K is not closed, so the welding machine in a power-saving state. Welding, as long as the closure of the welding switch K, the relay J was closed, so that the main contactor JC connected,