Archive for date: May 9, 2011

The Joule Thief — Lighting an LED with 1.5 volts

May 9, 2011 | Amateur Radio, electronics | By: Mark VandeWettering

I was bored, but not quite up to the challenge of debugging my existing radio project, or starting a new one. I idly began winding some wire onto a FT-37-43 toroid, and then remembered that I had never constructed a “Joule Thief”, a simple little circuit that allows you to light an LED using just […]

Ugly is Better

May 9, 2011 | Amateur Radio | By: Mark VandeWettering

So, over the weekend I assembled the HamCan, and got some pretty wonky performance. I’m going to go through it all again and see if I can figure out why the receive performance is so bizarre, (loose connection? poor adjustment?) but it got me thinking that part of the issue is that typical PCB construction […]