Regulated BENCH POWER SUPPLY 240Vac ~ 24Vdc

Made from an ATX computer power supply. Outputs; 24Vdc, 12Vdc, 5Vdc, 3.3Vdc & USB 5Vdc (no data lines).

https://knoba.files.wordpress.com/20...-supply-01.jpg

https://knoba.files.wordpress.com/20...-supply-02.jpg

https://knoba.files.wordpress.com/20...-supply-03.jpg

https://knoba.wordpress.com/2015/03/...-240vac-24vdc/

Thanks Ken!

Thanks knoba! I've added your Regulated Bench Power Supply to our Power Supplies category, as well as to your builder page: knoba's Homemade Tools. Your receipt:

<div id="blocks"> <div class="block b1 pngfix"> <div class="bimg"> <div> <a href="/regulated-bench-power-supply"><img src="/uploads/114426/regulated-bench-power-supply.jpeg" alt="Regulated Bench Power Supply" /></a> </div> </div> <div class="head pngfix"></div> <div class="left pngfix"></div> <div class="right pngfix"></div> <div class="blockover b1 pngfix"> <div class="title"> <a href="/regulated-bench-power-supply">Regulated Bench Power Supply</a> <span> by <a href="/builder/knoba_2">knoba</a></span> </div> <div class="tags"> tags: <a href="/tag/power-supply">power supply</a>, <a href="/tag/electrical">electrical</a> </div> </div> </div> </div>

I've seen many benchtop power supplies, but those USB ports are a nice, and nowadays necessary, feature.

Thanks DIYer! They're very handy for micro-controllers and charging up phones etc..

Great job knoba. This is a nice project. Planning to incorporate USB ports to my wall outlets.

Thanks for the compliments, Altair!

Sounds great. I hope you're going to publish the build... ;)

This thread has been moved to the Must Read subforum. Congrats (and thanks) to knoba for making such a valuable contribution!

Thanks Ken!

What makes those power supplies so handy is that both the 3.3v & 5v outputs are commonly used to power CMOS & TTL logic chipsets. If learning electronics on breadboards they are the bees' knees!

hth

I've been looking for an inexpensive 24v DC power supply.
Do you know how many amps it will handle?

Thanks for posting the neat thread

gatz

in its current state, at 24V it will deliver 1 amp, which is the maximum that you can get out of the 12V- terminal. If you wanted to increase this current rating you would have to change the diodes in the -12V line to diodes which will cope with more current. If you did this, you would also need to put a heat sink on the new diodes. Here is a link to someone who did this: https://www.youtube.com/watch?v=Mvym9AqlbuY&t=2s

thanks for that link

Nice work.

I have to ask are the USB ports straight to the power supply or are they running through some sort of power management capability. I have to agree with other here, the USB ports really make this little power supply as so much today plugs right in to those ports for a recharge.

The fact is I have an old bench supply that needs overhaul, something like this could be an excellent supplement.

I have a couple of these rattling around my garage, and I am pretty sure two of my neighbors each have one I put together. This has to be one of my favorite projects. When my local PC place has sales, I will pick up a few cheap ATX units just for these projects.