在生产中,为了实现甲、乙两地某种工艺上的操作连络,有时可采用简单的220V声光信号相序控制电路,其原理如图所示。电路结构简单,稳定可靠,又能节约线材,经长期使用,效果良好。图中AN采用普通电铃按钮,XD可用220V、25W In production, in order to achieve A and B of a certain process on the operation of contact, and sometimes can be a simple 220V acousto-optic signal phase sequence control circuit, the principle shown in Figure. Circuit structure is simple, stable and reliable, but also save wire, the long-term use, the effect is good. Figure AN ordinary bells button, XD available 220V, 25W