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Working on making an AC 225 volt welder into an AC/DC welder (225 volt AC and 125 volt DC). I purchased bridge rectifier for 225 amp and 220 volts. I am going to use two 3500 uF capacitors and a choke coil on the DC side. I need to build a choke coil inductor to filter out high AC signals for it now. Any ideas on how to construct this?

Can I use an iron core with nbr 4 insulated wire wrapped around it ?

Terry Miller
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    Choke for filtering out 50/60 Hz? Err... You might be able to attenuate the AC component with a humongous large choke. I sense XY problem. – winny Dec 02 '17 at 21:15
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    One needs to know V, ESR or peak Amp to determine saturation , L/C ratio and fo , ripple current depends on total ReqC>>f – Tony Stewart EE75 Dec 02 '17 at 21:36
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    here is a link to an AC to DC conversion project ... http://www.hildstrom.com/projects/ac-225/ ... he used 5 turns of 2 AWG on microwave transformer core – jsotola Dec 02 '17 at 22:40
  • Why are you trying to do this conversion? – ThreePhaseEel Dec 03 '17 at 02:10

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