This LED light is identical to the others with white LEDs, but I used red, green and blue LEDs for a Christmasy effect. The schematic of the circuit is on a post-it inside of the lid.
2012-07-09 Supercharged Joule Thief – Reduced Brightness
Peter is experimenting with my Supercharged Joule thief circuit. His picture is one of his recent results: a Supercharged Joule Thief flashlight. I quote: Hello and thanks for the fast answer, Now I want an SJT as a nightlight cause there are many so called “depleted” batteries lying around – I built one on breadboard
(Read More…)
2012-06-27 Photos of LED Lights I’ve Built (Cont’d)
(Cont’d from previous blog) During the early days of my LED lights, I did some conversions of regular flashlights. The one in the picture is a Craftsman that used four AA cells and a regular incandescent flashlight bulb. I took the bulb out, broke the glass and removed it, and put three white LEDs, each
(Read More…)
2012-06-26 Photos of LED Lights I’ve Built
The LED lights I’ve built decided to have a get-together, so they met up in my kitchen. I think they may be up to some kind of conspiracy. I think they’re angry about not being used. When they were made at the beginning of the millennium, they were the only LED lights available. Well, we
(Read More…)
2012-06-15 8 LED Altoids Tin Light
I managed to squeeze 8 LEDs into holes on the end of the Altoids tin. The brightness is truly awesome. With that much battery current, I could have reduced the 33 ohm resistors a bit. But why push it and waste more battery current? It’s already really bright. That’s why I put the second switch
(Read More…)
2012-04-12 A 12 LED Joule Thief Lantern
I blogged this for a neophyte on Energetic forum. If you’re going to use an existing lantern, then you may have a lot of modifications, since a lantern usually has several cells in a battery pack, which gives you a long battery life. If you reduce the number of cells, the battery life will be
(Read More…)
SS2012-04-08 Watson’s Nearly Disposable Joule Thief Light
Clear Silicone seal does wonders when it comes to weatherproofing and sealing against moisture. I used it to cover up and protect the Joule Thief parts on this nearly disposable flashlight. Components I wound two six inch lengths of 20 AWG (0.25mm) solid enameled magnet wire (bifilar wound) onto a 0.25 inch outside diameter ferrite
(Read More…)