DIY PSU - 575W for under £20

[arun 0]

I can't take credit for this, it was Leon's post on another forum that rendered the info to do it, but since I had some time I built one and I thought it worth sharing as others may want to do the same. Basically you need an old DL380 PSU from eBay and a few components from Maplin to make a 47A/12V DC PSU. More info here, full disclaimers apply if you are going to do DIY electrics and entry forms for the Darwin Awards are readily available

 

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Leon showed me some info this morning that lets you vary the voltage by putting a resistance across two of the pin outs. I have added chassis wires for this but don't have a resistor until the postman arrives. Anyway it easily goes to 13.8V although over-voltage protection cuts in at 13.82V so better to keep it a little lower I guess.

 

Hope this helps...

Edited April 27, 2012 by Guest

[Nutz 0]

Anyway it easily goes to 13.8V although over-voltage protection cuts in at 3.82V so better to keep it a little lower I guess.

 

Hope this helps...

 

he ment 13.82V not 3.82V

 

BTW it only cost me £11 including the £4 postage for the PSW

[arun 0]

Thanks Leon - corrected the post. Yeah, is worth pointing out that the PSU itself is only 50% of cost. You only need to spend the other 50% if you want a nice set of terminals... otherwise can just terminate on 12AWG wire and a Deans.

[Nutz 0]

Thanks Leon - corrected the post. Yeah, is worth pointing out that the PSU itself is only 50% of cost. You only need to spend the other 50% if you want a nice set of terminals... otherwise can just terminate on 12AWG wire and a Deans.

 

 

What like I did

 

BTW I can't take credit for it either it was down to Simon Wood when I asked a question

 

http://www.highalpha.org/forum/viewtopi ... =7&t=11348

[arun 0]

Another season, another mod... I noticed HobbyKing were doing a nice fused power strip - 2x40A (total draw) + 3x10A outputs assuming you can drive them, which the above PSU all but can. So now my 4 LiPo chargers can have the fleet ready to fly at about an hours notice

 

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[arun 0]

And taking it to it's logical conclusion, I can now charge my entire battery stock for a day's flying in the space of a 1C charge. The four chargers running over the batteries you see at 1C only pull 16A. Don't forget the DIY PSU can dish out 47A at 12V, maybe I need more planes/batteries/chargers?

 

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[Peter Royall 47]

Impressive Arun, charging one at a time is boring!

Oily