Originally posted by Ufopolitics
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I have computed ripple voltage for you. Just a rough estimate because the load is a motor.
At 50A the ripple voltage will be ~9.5Vp-p with 44,000uF (FWBR)
At 50A the ripple voltage will be ~7.7Vp-p with 54,000uF (FWBR)
I hope the motor won't mind having that much ripple at 120Hz. Yes those caps are being stressed out indeed. Please stay safe.
@JohnStone,
Thanks. The DC welders can be floated off ground although I do realize that's a safety hazard.
I also see what you mean, FET supply coming off the mains. Roughly 150VDC or 300VDC depending on where you are. Definitely not for amateur experiments.
Lester444
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