Build an Inexpensive 12 volt/12 amp Modern Digital Solar Charge Controller
This reader-requested solar controller for charging 12 volt lead-acid batteries is very simple to build and will help keep your batteries in tip-topped off shape.
The ReFUSEable Box
This project was built for field troubleshooting and replaces blown fuses until the problem is solved. By dialing in the amperage, you can preset the drop-out point in the place of a fuse (200 mA – 5 amps). It is also known as a programmable relay. It displays the active AC or DC amperage being drawn when in the circuit.
THE ELECTRONIC SNIFFER
My wife and I were taking our morning constitutional walk up the hill when I noticed the smell. The wind was from the south. “Do you smell that?” “What?” she said, “I don’t smell anything.” “Our neighbor must be gluing some PVC pipe or fiberglassing something.” I didn’t think much more about it, but the smell continued off and on for the next couple of weeks...
Don’t Blow A Fuse!
As a retired clinical chemist, bio-engineer with a PhD in experience, one of privileges I have is being sent all over the world with expenses paid. I’m a teaching consultant for both government and non-government organizations, but I often act as a repair technician. (Tough job, but someone has to do it!) If you fix it, you are a hero. If you don’t, no one seems to care as no one else has been able to fix it either. It’s a win-win situation. And you meet a great number of nice people...