ajnin http://www.ajnin.com Fri, 02 Jul 2010 09:15:29 +0000 en hourly 1 http://wordpress.org/?v=3.0 USB Variable Power Supply – Part 1 Introduction http://www.ajnin.com/diy/usb-variable-power-supply-part-1-introduction/ http://www.ajnin.com/diy/usb-variable-power-supply-part-1-introduction/#comments Fri, 02 Jul 2010 09:13:07 +0000 admin http://www.ajnin.com/diy/usb-variable-power-supply-part-1-introduction/ Read more »]]> Instructables is currently holding a USB contest. Having never done a instructable I felt it was time I gave something, no matter how meager, back to the community. I haven’t had the time to invest in a producing a solid instructable, but I do have my prototype built and as far as I can tell, it works! I will however be missing the contest deadline, and that I have excepted so that a proper contribution can be made.

I am basing my regulation circuit off a LM317 3 Terminal regulator. It may be a very simple circuit but I haven’t come across it in this application. In fact the circuit is taken from the data sheet.

I will be providing the full plans on how to make your very own USB Variable Power Supply. Please check back regulary if this project interests you.

]]> http://www.ajnin.com/diy/usb-variable-power-supply-part-1-introduction/feed/ 0 ATX power supply to benchtop power supply – Part 1 http://www.ajnin.com/diy/atx-power-supply-to-benchtop-power-supply-part-1/ http://www.ajnin.com/diy/atx-power-supply-to-benchtop-power-supply-part-1/#comments Wed, 23 Jun 2010 05:11:33 +0000 admin http://www.ajnin.com/diy/atx-power-supply-to-benchtop-power-supply-part-1/ Read more »]]> As I am getting further and further into small electronics, I find myself spending a small fortune in batteries. Most. Of my projects are 1.2 to 9 volts, and I am finding these early learning stages are very power consuming. My instincts told me to check the web for some sort of variable power supply that could power all my little toys.

So I searched for a bit and relazed that the cheap benchtop power supplies are just that, cheap. To get something of value, I would need to spend around 100 dollars to get a basic benchtop that wasn’t garbage.

That kinda sucks.

I need something cheap for my first power supply yet still useful. My google-fu led me to several how-to articles and half-assed instructables that would provie me exactally what I needed, a ATX power supply converted to a benchtop power supply.

The following articles greatly helped me:

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