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Montgomery Wards diodes?

Tue, 22 Nov 2022 07:51:27 GMT

go to see Welding Machine for Montgomery Wards diodes?

I am trying to find new, heavy duty rated diodes for my welder. It is the typical ac/dc century type. I am just trying to bullet proof it a bit. I can't see spending a lot on what was a cheapish purchase.As a beside, I seem to have a difficult time of striking arcs on it compared to the Lincoln tombstone I once had.
Reply:

Originally Posted by Nessmuk

I am trying to find new, heavy duty rated diodes for my welder. It is the typical ac/dc century type. I am just trying to bullet proof it a bit. I can't see spending a lot on what was a cheapish purchase.As a beside, I seem to have a difficult time of striking arcs on it compared to the Lincoln tombstone I once had.
Reply:https://vault.myvzw.com/webcs/QfBBqHrViw

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Reply:I saw where other, similar welders have a low and high side for AC welding. Low is supposed to strike an arc better. Can I add that?I'm not electronically smart. I am, however, able to follow directions and replace parts.Last edited by Nessmuk; 12 Hours Ago at 03:11 PM.
Reply:

Originally Posted by 52 Ford

These guys aught to have what you need. https://www.digikey.com/Sent from my Lincoln Buzzbox using Tapatalk
Reply:Not familiar with this model but most likely need a full wave bridge similar to what they use to "convert" AC welders to "DC". If your existing diodes are silicon rather than germanium or some other old school material - it's probably set for life.Maybe something like this? https://www.amazon.com/Single-Phase-.../dp/B07DKRQ7RF
Reply:Being 1970's tech. It has old school, stud type resistors.Do I need forward/positive and reverse/negative ones?I'm guessing it has 90amp ones in it.Alli express is about the only place I can afford 200amp. They, of course, don't mention the polarity.
Reply:It's been a long while since I did silicon electronics outside of glass tubes but I think with a FWB there's pretty much only one orientation and then you'll input AC on one side and take DC +/- from the other outputs. You might want to watch a few videos on Youtube on DC conversion to see what rectifiers they use but I think the one I shared is of the right type - trust but verify... I buy a few items from Aliexpress and would not hesitiate to buy a FWB there. I looked at a couple of DC arc welder schematics and they both had full wave bridge rectifiers rather than half wave. I don't know what is coming off it and its inputs/outputs.One thing - does the AC side work well? If that doesn't arc well - DC won't either.
Reply:If you want it to perform like an old tombstone, you might have better luck just buying another old tombstone.The harder you fall, the higher you bounce...250 amp Miller DialArc AC/DC StickF-225 amp Forney AC Stick230 amp Sears AC StickLincoln 180C MIGVictor Medalist 350 O/ACut 50 PlasmaLes
Reply:

Originally Posted by Nessmuk

They seem to have small stuff.
Reply:

Originally Posted by whtbaron

If you want it to perform like an old tombstone, you might have better luck just buying another old tombstone.
Reply:

Originally Posted by Nessmuk

I am trying to find new, heavy duty rated diodes for my welder. It is the typical ac/dc century type. I am just trying to bullet proof it a bit. I can't see spending a lot on what was a cheapish purchase.As a beside, I seem to have a difficult time of striking arcs on it compared to the Lincoln tombstone I once had.
Reply:They have a full way at Amazon. Dave

Originally Posted by Nessmuk

I am trying to find new, heavy duty rated diodes for my welder. It is the typical ac/dc century type. I am just trying to bullet proof it a bit. I can't see spending a lot on what was a cheapish purchase.As a beside, I seem to have a difficult time of striking arcs on it compared to the Lincoln tombstone I once had.
Reply:In the line of text you cut off in your posted picture is there a 6 digit model number.might start with 110. If so it was made by century which is now owned by Lincoln electric and supported by the wct division. To get an owner's and parts list with diagram. go to Lincolnelectric.comunder the resources tab select parts. enter as a guest. once in service navigator enter the ,model number in the code number box. If lucky you will get the owner's and parts manuals. While on lincoln you can send them an information request ifNavigator give you a hard time.

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