albersondh
New Member
Hey guys. So Im building a TIG welder with a 200A alternator. The alternators internal bridge rectifier will presumably make the smoke once I by-pass the field regulator, send a full 12VDC to the field, turn up the RPM's, and the volts go way up. Soooo, I need to select a stout 3 phase bridge rectifier that is good for 200A and ?? Volts.
I dont imagine this thing can spin up more than maybe 200VAC at max RPM and full field. If you think otherwise please correct me. I have been looking a these: Three-phase rectifier SQL200A/1200V(bridge rectifier,rectifier,diode rectifier)
3 Phase Diode Bridge Rectifier 250A 1000V SQL250A. Thinking that may work for me. However, I see some specs on this that Im not sure about. I see a spec for " Mean on-state current 50-300Amp". What exactly does this mean, please define this for me. My best guess tells me this may not produce current below 50A? Which would be no good for me.
Another spec that Im curious about is "peak repetative reverse voltage 200-1800V". What exactly does this mean to me.
I need to have the ability to control this welder to a very low DC current and as high as the alternators max output of 200A. Do you think the Bridge Rectifire I listed abouve will work?
I dont imagine this thing can spin up more than maybe 200VAC at max RPM and full field. If you think otherwise please correct me. I have been looking a these: Three-phase rectifier SQL200A/1200V(bridge rectifier,rectifier,diode rectifier)
3 Phase Diode Bridge Rectifier 250A 1000V SQL250A. Thinking that may work for me. However, I see some specs on this that Im not sure about. I see a spec for " Mean on-state current 50-300Amp". What exactly does this mean, please define this for me. My best guess tells me this may not produce current below 50A? Which would be no good for me.
Another spec that Im curious about is "peak repetative reverse voltage 200-1800V". What exactly does this mean to me.
I need to have the ability to control this welder to a very low DC current and as high as the alternators max output of 200A. Do you think the Bridge Rectifire I listed abouve will work?