High Ampage 12v DC Transformer

[Shox Dr]

I need a High Ampage 12v DC supply to run a 12v Hydraulic pump in my workshop, among other possible uses. At present I use a Battery but it's pain charging it up. So this got me thinking

Would it be possible to run 110v transfers in series to get 13.75v

eg, 240v>115v>55v>27.5v=13.75v

I then thought ****** it needs rectifying (AC to DC) so that got me on to thinking about using an old welder. I know the voltage welders are dropped down to get the high ampage is around 12v. So what do you think Im I mad or just plain...

 

[Shox Dr]

You know I been sat here for the last 20mins wondering which forum to put it in. Cheers

 

[shenion]

how much current do you need?

 

[Shox Dr]

100amp ish more the better really

 

[Wozzaaah]

The projects forum is a bit of a confusing one but it's really meant for showcasing work people have done. No reason why I couldn't have left this in there but I thought it would be better here.

 

[zzr1200]

I need a High Ampage 12v DC supply to run a 12v Hydraulic pump in my workshop, among other possible uses. At present I use a Battery but it's pain charging it up. So this got me thinking


I then thought ****** it needs rectifying (AC to DC) so that got me on to thinking about using an old welder. I know the voltage welders are dropped down to get the high ampage is around 12v. So what do you think Im I mad or just plain...

Yes......Barking......

 

[shenion]

I'd replace the motor with an AC one.

You are talking 1200 watts supply. They aint cheap.

 

[tigler]

1200 watts at 12V DC is alot of power !! So a welding set is probably the cheapest way to do it. There are some big switch mode power supplies for computer application that you could parallel up , but even buying them off ebay wouldn't be cheap.

 

[Shox Dr]

I'd replace the motor with an AC one.
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One step ahead of you there. I'm bored, humour me