Converting a ac welder to dc via 300 amp rectifier, my question is will this be dc positive or dc negative thanks in advance
Sent from my SM-S727VL using Tapatalk
- MinnesotaDave
-
Weldmonger
-
Posts:
-
Joined:Sun Oct 27, 2013 10:57 pm
-
Location:Big Lake/Monticello MN, U.S.A.
It will only depend on where you hook your cables. Hook your electrode holder to the positive side for DCEP.
Dave J.
Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~
Syncro 350
Invertec v250-s
Thermal Arc 161 and 300
MM210
Dialarc
Tried being normal once, didn't take....I think it was a Tuesday.
Beware of false knowledge; it is more dangerous than ignorance. ~George Bernard Shaw~
Syncro 350
Invertec v250-s
Thermal Arc 161 and 300
MM210
Dialarc
Tried being normal once, didn't take....I think it was a Tuesday.
What kind of rectifier are you using? I see some really cheap units <$50. I doubt they produce a smooth dc line. It will need some sort of capacitors to help smooth it out. Im curious. Let us know how it works
Sent from my SM-G930V using Tapatalk
Sent from my SM-G930V using Tapatalk
Add a choke (inductor) if you are converting a constant current machine like a stick welder, and avoid too much capacitance. Add capacitors if you are converting a constant voltage machine and do not add too much inductance. Inductors steady the current flow and capacitors steady the voltage.
Multimatic 255
Yes a choke with lot of turns is for stick welders.
But a choke (aks Reactor) with few turns with give a smoother DC .
Some old books on MIG with take about adding turns (also choke) for smoother welding.
Today if look most CV welder they will some type of choke / Reactor.
Dave
But a choke (aks Reactor) with few turns with give a smoother DC .
Some old books on MIG with take about adding turns (also choke) for smoother welding.
Today if look most CV welder they will some type of choke / Reactor.
Dave