I'm trying to build an inverter welder and I need to know how big of an aluminum electrolytic capacitor do I need in order to get 400 amps of output, with 110v input coming from my wall outlet? Can I add several of the 400 amp capacitors in series without increasing the power? Would I need a 4 bridge rectifier on the input to convert to DC? If so how large?

 

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What you described looks like to use an Non-isolation power supply which our forum doesn't allowed, if you trying to use the safety way then please click the "Report" button on the bottom line or to create a new thread, thank you for your cooperation.