Friday, January 15, 2010
As you guys know, I have someone building one of my welders at the moment. He (Shawn) measured the capacitance of his capacitor and came out way short (He is sending it back). Shawn connected 3 capacitors in parallel with a total of 4.5 Farads. He said that the welder worked really good until he cranked it up to 18V with a first pulse of 30Ms and a second of 35Ms when he heard a "pop", That was after about 18 welds. We are trying to find out what went wrong and are in a process of pinpointing the problem. The first pulse is basically just to burn away oil and dirt and the second pulse is the one that does the actual weld. 30Ms for a first pulse is way too high and It might have something to do with the popping sound. When we find the problem, I will redesign and make sure that this never happens again. Hang in there guys, I will keep you updated.