Objective: 90 to 100 volts dc at 25 to 30 amps
Could I take 2 microwave transformers cut the tops off . then throw them in the mill and machine the cut surfaces. ( to make a variable current welding transformer they cut the top off, machine the two sides and then slide the top off center to lessen the current ) Then wind a new secondary and weld them together. I would double the core and more than double the secondary window.
I only need about 70 volts ac to achieve my objective. But how much would the voltage drop at 30 amps? Would a large amount of filtering capacitance help eliminate some of the voltage drop?
I have a little Forney 100 amp inverter dc welder and when you get down to 25 to 30 amps it is hard to start and maintain an arc. At these currents my welder puts out about 20 volts. I figure if I had one that put out 90 to 100 volts it would be a lot easyer to start and maintain a arc.
Any thoughts on the feasibility of my plan would be appreciated.
Dan
Could I take 2 microwave transformers cut the tops off . then throw them in the mill and machine the cut surfaces. ( to make a variable current welding transformer they cut the top off, machine the two sides and then slide the top off center to lessen the current ) Then wind a new secondary and weld them together. I would double the core and more than double the secondary window.
I only need about 70 volts ac to achieve my objective. But how much would the voltage drop at 30 amps? Would a large amount of filtering capacitance help eliminate some of the voltage drop?
I have a little Forney 100 amp inverter dc welder and when you get down to 25 to 30 amps it is hard to start and maintain an arc. At these currents my welder puts out about 20 volts. I figure if I had one that put out 90 to 100 volts it would be a lot easyer to start and maintain a arc.
Any thoughts on the feasibility of my plan would be appreciated.
Dan
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