Joule Thief

[crowclaw]

Hi Freepow, something you can try. You have two 1k resistors to the base... substitute the bottom one for a 10k. Next substitute the top one for a 2.2k... leave the base end connected but disconnect it from the transistor collector side and instead connect it to your super cap. (2.2k from supercap to base) Next disconnect the green LED anode and take it over to the red LED anode side. Finally disconnect emitter from ground and replace link with a 15r resistor. When the supercap reaches 1.5v the green led should be lit. Note try the values I've suggested, the 2.2k adjust the base turn on point, and the 15r will restrict the current flow through the LED. Regards

[synchro1]

There's a new finished job video of the Flash Toroid with a push button on off switch and improved base.

http://www.youtube.com/user/zebok3?feature=mhum

[kb24]

Yes, it should be.  Parallel just means that you could remove the caps from the circuit, and there still would be a circuit.  so, I just took the + and - from the EB and ran it to my JT and where I connected to my JT I tapped in and place the supercaps using jumper wires.  so, the original circuit was still there, I just added the caps in addition.

Thanks for watching my videos.

Bill

i have try by adding the different size of caps( 1uF, 47uF, 220uF) on my joule thief. My EB + JT without caps can light up 1 led full intensity. But after i add on caps( 1uF, 47uF, 220uF), the light get dimmer. So what the problem with my JT? Is it something wrong with my toroid?

My toroid consist of 22 turns and 19turns.. Is this correct?

Adding caps doesnt effect on anything. So what is the possibility for this?

[resonanceman]

i have try by adding the different size of caps( 1uF, 47uF, 220uF) on my joule thief. My EB + JT without caps can light up 1 led full intensity. But after i add on caps( 1uF, 47uF, 220uF), the light get dimmer. So what the problem with my JT? Is it something wrong with my toroid?

My toroid consist of 22 turns and 19turns.. Is this correct?

Adding caps doesnt effect on anything. So what is the possibility for this?

KB


All of those caps should  be enough to get your JT working right.
Are you sure you are hooking them up right?
Can  you post a picture of it with a cap hooked up?


gary

[kb24]

Here i attached my JT(sorry for bad drawing).. I didnt use any resistor. and i try adding caps but it didnt have any effect.. but it make my led dimmer.. Is my toroid connection correct? Plz give some comment..

Thanks