|September 30, 2004||HOME|
This isn't really airplane work, but I have been struggling with 12v power sources for weeks. I have gone out to the car at times to test lights and even used a string of flashlight batteries to get to 12 volts. I was going to buy an ac/dc converter for 12v power when I realized I had an extra PC case with a power supply in it. A quick look revealed it promised 8 amps at 12 volts. That's all I'm likely to need.
Here is the PC power supply opened up. Lots of wires, ugh....
I added a terminal strip to the outside and drilled holes for the wires I wanted to bring out.
After clipping out all the wires I didn't want (it took a while to find the right wires with a tester), I connected the wires to the terminal strip.
Now for the test. Yes, 12v, 5v and 3.3v as advertised!
I added some short pieces of 10 gauge solid copper for terminal posts and labeled the box accordingly. I also added a green LED to indicate power. I didn't bother to wire in a switch. That would be easy to do if this thing gets used a lot.