555 timer first shot circuit for spot weld machine

Thread Starter

ht systems

Joined Aug 2, 2011
this is a circuit that i Designed and used it on five machines , it gives from 0.1 s to 1.5 s first positive wave then turn off and never turn on again if u keep pushing the button , u have to pull the botton off then turn it on again to work . i hope that this would help anyone .