Roger G3XBM's (Mainly) Amateur Radio Blog

Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.

Showing posts with label Joule thief. Show all posts

Showing posts with label Joule thief. Show all posts

27 Dec 2018

Joule thief

If you have partially drained batteries, you may be interested in this idea. It can power LEDs from almost drained batteries, although wit...

10 Aug 2009

Joule Thief circuit

This month's Practical Wireless makes reference to something called the Joule Thief circuit which allows a very nearly exhausted single...

View web version

About Me

Roger G3XBM: Burwell, Cambridge, United Kingdom

View my complete profile

Powered by Blogger.