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电阻焊用电子线路存在着许多缺点,使能量输入减少并使焊接质量降低。伦敦一家厂商设计了一种线路,克服了这些问题。半导体的电阻焊控制器通常由一个人工操作的计时器组成,计时器接通一个普通开关或半导体的主线路开关,向一只与之相配的焊接变压器的初级绕组提供能量。这一技术发展成为包括一组选择脉冲周数(通常是1～9周)和一相位控制器在内的电源同步系统(图1)。相位控制器在每个正、负半波内调节电压的大小(即热输入的大小)。
There are many disadvantages with electronic circuits for resistance welding, resulting in reduced energy input and reduced welding quality. A manufacturer in London designed a line to overcome these problems. Semiconductor resistance welding controllers typically consist of a manually operated timer which switches on an ordinary switch or semiconductor main line switch to energize the primary winding of a matching welding transformer. This technology has evolved into a power synchronization system (Figure 1) that includes a set of select pulse weeks (typically 1 to 9 weeks) and a phase controller. The phase controller regulates the voltage in each positive and negative half-wave (ie, the size of the heat input).