DIY Dual Adjustable benchtop PowerSupply! NEW PIX/VID 02/25

[Triton]

OK so its not 100% done yet, still have some soldering and cleaning up to do on it but its Cosmetically done!

Features:
*0-12V infinitely adjustable and up to 3 Amps per side!
*Dual LED volt meters accurate to 3 decimals!
*Dual banana jack binding post terminals
*a big metal toggle switch and a light!
*is made out of a nutone doorbell or intercom box

future features might be negative voltage outputs (just add a switch and some stuff) and higher voltage output than 12v

pics!


i will post more pictures when i get it all powered up and whatnot!


By triton
VIDEO RIGHT HERE YA'LL

[gamemasterAS]

Cool I have always wanted to make one.

[XCVG]

How does the variable converter work? Variac? Dimmer? Custom logic? Pot and regulator?

[Rekarp]

slick man. Beats the crap out of my power supply

[Triton]

How does the variable converter work? Variac? Dimmer? Custom logic? Pot and regulator?

Its an LM350T variable output voltage regulator and output is set by a 5k pot

[grossaffe]

so are these used for testing and what-not before you mess with batteries?

[Kurt_]

Niiiice. A cheap alternative is an old computer's CPU. Right off the bat, you have +3.3, +/- 5, and +/- 12 volts. In fact, I have an small old one I was saving just for that purpose...

[nevermind1534]

Niiiice. A cheap alternative is an old computer's CPU.

err PSU. I can link you to a good guide if anybody wants.

[XCVG]

Niiiice. A cheap alternative is an old computer's CPU. Right off the bat, you have +3.3, +/- 5, and +/- 12 volts.

so I can take this old pentium i got and pulg it into the wall? how i need help and pin-thingy u guys tak about NEED HELP!!!!!!1!1!!!11

Sorry about that. You should fix that mistake.

[nevermind1534]

Niiiice. A cheap alternative is an old computer's CPU. Right off the bat, you have +3.3, +/- 5, and +/- 12 volts.

so I can take this old pentium i got and pulg it into the wall? how i need help and pin-thingy u guys tak about NEED HELP!!!!!!1!1!!!11

Sorry about that. You should fix that mistake.

Here you go http://www.thebestcasescenario.com/foru ... hp?t=16382

[Triton]

Its based on an AT PSU actually. i have it set up like this so i have infinite adjustability from 0-12v so i can test dropout voltages and current draws and such easier. plus it allows me to run pretty much anything that will run on 12v or less. or i can use and old printer power brick and go from 24v and down! and up to 6 amps if i run the supplies in parallel

[eurddrue]

I already have one! It is my friend's old one thats crappier, but it puts out 2A constant and adjustable from 0V to 15V the banana plugs in mine are always plugged in too! But you have to use a multimeter to check the voltage...

[Triton]

The led volt meters i got only cost about 5-6$ plus shipping each from sure electronics in hongkong

[XCVG]

The led volt meters i got only cost about 5-6$ plus shipping each from sure electronics in hongkong

Link?!

[Triton]

CLICK HERE FOR LINK