Some time ago, I built the joule thief described in the attached link and pictured below. Since then, I have acquired an o'scope, and today decided to get the joule thief out and look at it with the scope. I used a new AA battery. Here's what I think I discovered.
The LED was being pulsed every 88 μS (which I believe is 11.363 kHz) at 5.6 Vpp. I am new to using the scope and wonder if these observations seem reasonable.
http://www.evilmadscientist.com/2007/weekend-projects-with-bre-pettis-make-a-joule-thief/
The LED was being pulsed every 88 μS (which I believe is 11.363 kHz) at 5.6 Vpp. I am new to using the scope and wonder if these observations seem reasonable.
http://www.evilmadscientist.com/2007/weekend-projects-with-bre-pettis-make-a-joule-thief/
Attachments
-
118.5 KB Views: 61