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Microvawe transformer spotwelder. Is there a way to improve it? (lemmy.dbzer0.com)

submitted 1 year ago by dansity@lemmy.dbzer0.com to c/askelectronics@discuss.tchncs.de

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Hi, I have built a microvawe transformer spotwelder, I have put a single turn of welder wire for in the secondary and I'm timing it with arduino. Worth mentioning it was/is a 230V transformer. Electrodes are sharpened copper rods. I believe the voltage is still high. The spotwelds it produces are slightly discolored and not as strong as you would expect. Is this design fundamentally borked? Is there anything else I can make to make it better? Photo from test stage before it was built into a project box, it is less "shocking" now.

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[–] BigDanishGuy@sh.itjust.works 1 points 1 year ago (1 children)

If it's just a matter of getting a larger voltage, then you already got 400V. No need for new windings, unless the insulation on the primary can't handle 400V.

[–] dansity@lemmy.dbzer0.com 1 points 1 year ago

I need lower voltage. 1-2V on the secondary. I have 3V rms now.