Baomain Brückengleichrichter MDQ-200A 200A 1600V Vollwellendiodenmodul einphasig

Works great to convert AC welder to "pulsed" DC for cheap. You'll really want to find a microwave transformer to wind some wire to make a "choke" in the circuit after this rectifier, this will make more steady DC current. I went an extra step and used both a microwave transformer core (free) and a large ferrite toroid ($7) that I hand wound with 4AWG CCA ($14). The output is much smoother than AC with less spatter and actually runs 7018 rod nicely. I cheaped out and went with a 200 amp rectifier instead of 300 amp. Figure anything past 150 amps I'll probably just be using AC to avoid arc blow, I'll let you know if it burns up.

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nocandopdx

Yes!

Bewertet in den USA am3. August 2024

I have a radiator fan off of a pickup truck that moves a tonn of air so I really wanted to use it for when I paint because box fans just weren't getting rid of the overspray fast enough. Problem was, the radiator fan draws a lot of current so a 12V adapter or a cheap power supply wasn't going to cut it. Ive burned out several full bridge rectifiers that i made and several good sized ones I've salvaged from other devices, they just couldn't handle the current for more than a few seconds. This is a little pricey but it is a beast! Powers the fan continuously and doesn't even get warm. I did place the circuit right in front of the fan so the airflow probably contributes to that, but i dont think it's even breaking a sweat.

Easy to implement on vintage battery charger.

David Crist

Bewertet in den USA am5. November 2024

The full wave 200A rectifier unit arrived less than 18 hours after ordering it and was in perfect condition. It was used to replace a failed full wave rectifier assembly in a 40+ year old, heavy duty, battery charger / jump starter. The original rectifier circuit had failed, but the rest of the unit was okay. My son installed it without any problems and is back in business. The heat sink is isolated from ground, so mounting it posed no tricky electrical problems. This is the second of this type of device that I have purchased through Amazon. The first was used in a wire welder. It still works great. Be sure to used crimp-on rings or spade luges when connecting it up as you are presumably using it for high current applications and want the best electrical contact possible. I would (and likely will) buy another one.

mark

Seems good quality

Bewertet in den USA am10. September 2024

Haven't stressed it yet, purchased to replace a 150a rectifier that failed, internal solder melted, after welding for ~15 minutes. shall see how this holds up.
This is in a 90a CE welder.

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I bought it to convert my AC welder to DC.

Michael J Edell

Bewertet in den USA am29. Dezember 2023

Die Medien konnten nicht geladen werden.

It works pretty good. I've only used it twice since I installed it on my welder but it did what I wanted it to do.

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Works great! Bigger IS better!

MacGyver2.0

Bewertet in den USA am5. Dezember 2017

Works great! I just converted my A.C. welder to D.C., and I wanted to be able to handle the demand without it over heating, and it has proven to be doing its job. I have ran my newly converted welder at it's highest amperage, and it stayed nice and cool. It wasn't that much more than the 150 amp unit, so why not be on the safe side to avoid overworking your most important component! I would recommend this to anyone who is converting your metal glue gun to a real working welder that will do a lot better job. I was reluctant to do the conversion, but the cost was well worth the effort, and it wasn't brain surgery, but was glad I took the leap! This rectifier is the one you need!

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sketr jag

Bewertet in den USA am23. Juni 2024

Perfect