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Crashagain
Extreme 3D
Joined: 17 Jan 2008
Posts: 1349
Location: Redding, Northern Calif.
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 Posted: Tue Mar 29, 2011 12:23 pm
Post subject: I made a really cool power supply for cheap.. |
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I just thought I'd share something I recently learned about. I made a power supply for under 20 bucks using a server power supply, a set of banana jacks and a micro switch. It produces 12V and 48amps. I did a test run with my charger and ran it up to 10amps and charged a 3S 2650mah battery that was down 80%. It did a full charge in under 13 minutes. Pretty sweet.. And with the parallel board I can charge 6 packs in under 30 minutes.
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Pappy K
Extreme 3D
Joined: 01 Nov 2010
Posts: 176
Location: Goolwa, South Australia
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Posted: Tue Mar 29, 2011 6:08 pm
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Ok - it looks pretty - sounds good - What's inside the box??
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Crashagain
Extreme 3D
Joined: 17 Jan 2008
Posts: 1349
Location: Redding, Northern Calif.
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Posted: Tue Mar 29, 2011 9:54 pm
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Stuff... Stuff that makes power.. Not sure what you mean, it's just a computer power supply You can get them on ebay for 11 bucks.
A 40 amp power supply from Amain hobbies is over 120 bucks. I made a 48amp for less then 20 dollars.
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Trouble
Extreme 3D
Joined: 12 Aug 2010
Posts: 910
Location: Galveston, Texas
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Posted: Wed Mar 30, 2011 11:46 am
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That is really good stuff you got there, I am gonna think about that and maybe do the same, sounds too good to pass up.
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wolfman76
Flying Inverted
Joined: 01 Jul 2011
Posts: 51
Location: hammond,indiana
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Posted: Wed Jul 06, 2011 10:11 am
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so you go by amps and not wattage cuz i was under impression you go by the wattage of output for power supply???
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platinum
Extreme 3D
Joined: 31 May 2011
Posts: 272
Location: Bangkok Thailand
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Posted: Wed Jul 06, 2011 10:37 am
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Hi Crashagain,
That sounds good. 
Thanks for sharing.
platinum
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Crashagain
Extreme 3D
Joined: 17 Jan 2008
Posts: 1349
Location: Redding, Northern Calif.
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Posted: Thu Jul 07, 2011 10:13 am
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You welcome, it works really good. That setup works better then my hyperion 606i and way faster too. I made a set for my friend and he is running them in parallel to power his 610 Duo charger.
Running them in series would be better, but neither of our chargers can handle 24V input. I'll get one later maybe..
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solentlife
Extreme 3D
Joined: 30 Dec 2010
Posts: 872
Location: Latvia / UK
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Posted: Thu Jul 07, 2011 10:44 pm
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| wolfman76 wrote: | | so you go by amps and not wattage cuz i was under impression you go by the wattage of output for power supply??? |
Doesn't matter because Watts are Volts x Amps .......... so as long as Volts are steady and known ... and you get Amps - you can work out the Watts.
The only time Watts is preferred is when looking at required input to provide the 12V at xx amps ......... ie
You want 12V and 100A max output ...... this is 1200 Watts.
240V input needs to be capable of 1200 / 240 = 5amps
Allow 10% or more for losses and input will be ~6A on 240V to provide sufficient for a 100A output.
(I used a high figure to get maths easier !)
For low ampage provision - you can use model railway power supplies where many even have pots that you can control voltage down to zero.
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jonhalice
Hopping Maniac
Joined: 19 Oct 2011
Posts: 25
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Posted: Tue Nov 08, 2011 2:37 pm
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good idea,i am happy to hear it . |
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