Joule Thief

[Pirate88179]

http://www.goldmine-elec-products.com/prodinfo.asp?number=G17610B

Hey, Goldmine now has these flash boards down to $4.00 (US) for 10 of them.  40 cents each!  I think I am going to get another 10 for this price.  They say that some might not work...well...I had 2 that did not BUT I found out how to fix them....it was easy.  All I had to do was solder a jumper from the diode to the - output lead.  Maybe there are some other problems but both of mine work great after doing this.  All of the others i got seem to work fine as they came.

Bill

[Lakes]

Buy them all and resell them on Ebay as Jule thief kits!

[SkyWatcher123]

Hi folks, built a nice little night light joule thief, will post pics later today.
Uses one 1.2v AA rechargeable cell or 1.5v AA alkaline type cell.
Uses ferrite flyback core, salvaged from television.
Uses 30 awg. magnetic wire for secondary and 24awg. bifilar for primary and feedback windings.
Uses 2n3055 transistor.
Amp draw is 240 milliamps.
Watts used is around 300 milliwatts.
Very usable light output, can easily use to read a book or light a smaller room with enough light to see what one is doing.
peace love light
tyson
also using gutted feit led bulb, has 9 led, normally draws 2.5 watts.

[Pirate88179]

Hi folks, built a nice little night light joule thief, will post pics later today.
Uses one 1.2v AA rechargeable cell or 1.5v AA alkaline type cell.
Uses ferrite flyback core, salvaged from television.
Uses 30 awg. magnetic wire for secondary and 24awg. bifilar for primary and feedback windings.
Uses 2n3055 transistor.
Amp draw is 240 milliamps.
Watts used is around 300 milliwatts.
Very usable light output, can easily use to read a book or light a smaller room with enough light to see what one is doing.
peace love light
tyson

also using gutted feit led bulb, has 9 led, normally draws 2.5 watts.

Nice job.  Light is great especially when you can make it with batteries that might otherwise be thrown away.
Excellent.

Bill

[TinselKoala]

Pretty, I like it.

Now I'm wondering about JT Color Organs..... some of these color LEDs are very bright for very little current.....