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Author Topic: Bridge Rectifier  (Read 762 times)

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Offline WelderCraftsTopic starter

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  • Country: gb
Bridge Rectifier
« on: October 10, 2021, 04:31:34 pm »
Hello all
I've got a bridge Rectifier for a Welder that has 24 diodes and about 6 or 7 of them are fried.
I've tried finding replacements but can't seem to find the same ones.
The diodes are marked TV 256R
Could I possibly replace them with a stud type diode? If so what value diode would I need?  Or could anyone suggest an equivalent?
The welder itself is a 1 phase 120amp MIG
Thanks
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Offline fzabkar

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  • Country: au
Re: Bridge Rectifier
« Reply #1 on: October 10, 2021, 05:34:11 pm »
Alternator diodes are usually press-fit types. Be aware that they have two different polarities.
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Offline WelderCraftsTopic starter

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  • Country: gb
Re: Bridge Rectifier
« Reply #2 on: October 10, 2021, 06:18:03 pm »
 :-+ thanks shall check them out
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Offline bdivi

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  • Posts: 108
  • Country: bg
Re: Bridge Rectifier
« Reply #3 on: October 11, 2021, 08:23:17 pm »
Few years ago I made a 150A welder and used 4xKBPC5010 in parallel. Still kicking to this day.

This is probably more reliable and cheaper. Just make sure you buy original products and not fakes.
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Offline WelderCraftsTopic starter

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  • Posts: 9
  • Country: gb
Re: Bridge Rectifier
« Reply #4 on: October 11, 2021, 09:19:06 pm »
I ordered one of these will see if it works
￡6.76  22%OFF | MDQ 150A-1600V Black Single-Phase Diode Bridge Rectifier 150A Amp High Power 1600V
https://a.aliexpress.com/_mNyG2du
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