变向镀铜现在已经试验成功、效率比原来提高三倍。现将设备和试验情况介绍如下: 一、变向设备: 这种自动变向控制器由点焊机之时间调节器改装而成。其工作原理如下: 下图主要是由一个三极(或四极)来控制,当K接触极闭合以前,栅极所受电压为B与1点之间电压,在栅极电压为正的半波内电容器C迅速充电,在相反的半波内(即B对点1为负时)栅极电路不通。电容器即经电阻K放电,但R大放电慢。因此,在K未合上以 Change to copper has now been successfully tested, the efficiency increased three times than the original. Now the equipment and test conditions are introduced as follows: First, the change to equipment: This automatic change to the controller by the spot welding time regulator converted. The working principle is as follows: The figure below is mainly controlled by a three-pole (or quadrupole). When the K-contact is closed, the voltage applied to the gate is the voltage between B and 1, and the voltage at the gate is positive Wave capacitor C is rapidly charged, and in the opposite half-wave (ie, B is negative at point 1) the gate circuit fails. The capacitor is discharged through the resistance K, but R slow discharge. Therefore, K did not close with