YodaKrawler
100 µW
- Joined
- Nov 18, 2007
- Messages
- 8
oh and do you think that you would be able to use this cap with a ac transformer that can dub down to 24 volts ac insteed of a dc one?
YodaKrawler said:oh and do you think that you would be able to use this cap with a ac transformer that can dub down to 24 volts ac insteed of a dc one?
Yes, that's what I did on several of mine. Makes things a lot easier to hook up. Just don't go too deep and drill into the semiconductor stuff. Most of that 'bolt' is solid copper, so you should have plenty of room to work with.YodaKrawler said:.....do you think that i can drill the bolt end and tap it to attach my leads?
Yes indeed. Much safer that way too. You may need to put a cooling fan inside the box if you will be doing a lot of welds in a short period of time., especially if your power supply is going inside too.I was thinking or using a box to put everything in so i can make it a little easier to put away or move .....
As far as the switch.... I thought about doing it that way, but unless you make a fancy handpiece (I plan to talk about different handpiece designs once I get some more experimenting done, and have time to write it up.) and mount the switch on that; PLUS, have a jig for your batteries and an extra finger (mechanical or human) to hold down your nickel strip prior to the first weld, I think you will probably find the foot switch to be worth the extra hassle and wiring........then connect my switch to my leads so i can activate by hand. do you think this will be okay?......
I found twelve nice Mallory 36,000uF @ 35V (45V surge) ones on eBay last night at a decent price, and bought them. Plan to try that out and see what happens. That will give me nearly half a Farad and hopefully optimum ESR. The one I built ages ago ran at 40V if memory serves and had a lot more capacity, but it had other design errors, so it's mediocre (at best) performance doesn't give me anything to judge by now.fechter said:If you look at the available capacitors in range of 15 to 60v, it may be more cost effective to go up a bit in voltage. I'd shy away from anything over 48v just for electrical safety. Ideally, I'd suggest finding a source of surplus capacitors to keep cost down.
I was 'noodling' that idea around myself last night. four low tech possibilities I could think of, using two Caps or cap banks and two SCRs:The Sunstone dual pulse thing was interesting. With two banks of caps and two SCR's, it wouldn't be to hard to rig up a sequential trigger. I guess the first bank could be a lot smaller.
Very simple right now. Just some #4 copper ground wire, with a conical point, and some insulation.I'd like to see a pic of your electrode setup. That's the part I'm really clueless about.
-----------------------------------------------------------------------------Uneven or inadequate pressure can damage electrodes and leave holes in the work piece.