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It has a lot of power loss, but since I'm using to spot weld some stainless steel. It only works for 1 second, sometimes 2 if the sheet is too thick. And usually I don't weld more than 3 spots on a work. I'm welding stainless "belts" that are used as clamps. I think I just don't know what to do...
Yes, I was trying to use as current limiter. It actually works, but with a lot of voltage drop, from 127 to 60VAC. Closed-loop control, you mean a feedback circuit not pure analog? It is not working anyway, so I'm not using it. I just wanted to have a transformer with a core where I could stick...
Here is what I'm trying to do. I have a transformer, 1600VA unballasted. And I wan't to short circuit the secondary. If I just do that without anything in series, it draws some 80A from the wall, which is not good. Then I remember about using inductors in series. I got some formula to calculate...
Actually I think that is what I'm looking for, you said "But in your case this is not applicable", you mean in the 24v transformer itself? That is not possible, but I could make another 127v - 127v transformer. I think I will try to build something like that. I have some old transformer cores...
Hi, I have a 127V - 24V transformer, 500VA. I use it on a workbench for destructive tests, like to see if some component will "blow" or catch on fire. The problem is that I'm forcing that transformer and it gets really hot, because sometimes the circuit gets short circuited. I was wondering if...
Hi, I read that thread, but there is no store selling PIC18F14k50 here. Only if I buy from US. I would but mail here is terrible, it will take 4-6 months to get the product. I will use optic IR led and transistor. The hall sensor needs a magnet, and I'm afraid if it will work properly will the...
Hi all, first I need to say I'm not good with microcontrollers, and I am building my second tesla coil, that is why I need a tachometer for the rotary spark gap RPM.
I started to look everywhere for a tachometer project, but I'm a bit limited on "money". I was trying to use PIC, because I can...
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