In a forward converter, you MUST NOT use an air gap in the transformer, it increases the leakeage inductance, an thus the flyback current (in the reseting system), decreasing the efficiency. The airgap is only used in the flyback converter, because the energy is stored in the transformer, in a forward converter, the energy is only stored in the secondary inductor. The schematic looks good, nice job :)
I bought Kzubr 400N is it any good? From the label it states that it pulls 35.7A with high spikes of 47.5A! It welds very well but is there a way to adjust the LCD screen to show only 200A since as it is it goes up to 400!
I love how the comment section is also crowd-and open-sourcing a better welder than some you can buy 😆 Gonna try to go even further Kasyan, home-build a MIG/TIG torch next? Or go for a cutter instead? Honestly you could just make anything and I'd be interested at this point.
Anyone have an idea of using something similar to charge my old car that needs around 200V? No need for isolation between primary and secondary. I thought about rectify the 3phases and use some kind of PWM to limit the current. Is that the way to go?
@@Frolleglse well if you need exactly 200v you can use a variac and a bridge rectifier with capacitor to output 200v stable, if you dont need exactly 200v you can just use mains witg a bridge rectifier, that will output 200v rms with peaks of 325v
Unfortunately a transformer will be so big and expensive. Must be some switched power supply or PWM of rectifyed mains. Cannot rectify mains directly and feed the battery since the current would be enormous in such setup.
