Joule Thief

[Pirate88179]

@ Kmax:

Nice video.  If you can light that 4 watt you can probably light a 48" tube as well.  For me, the bigger tubes light easier and better.  Try an 18" tube or a 48".

Bill

[kamax]

Bigger light easier 
Thanks for the info, i will give a try when i have buy one. 

[kamax]

I have a new video, it's the same as previous but this time i light the lamp on wireless, on one side.

my video:http://www.youtube.com/watch?v=mY77kTGo4ZM

For the bigger lamp it don't works for the moment, i think i need more power.

[xee2]

@ kamax

I have a new video, it's the same as previous but this time i light the lamp on wireless, on one side.

my video:http://www.youtube.com/watch?v=mY77kTGo4ZM

For the bigger lamp it don't works for the moment, i think i need more power.

Great video. I suspect that you do not have quite enough turns on your pickup coil to get over 400 volts out. If you increase the pickup coil turns by 50% the tube should light without touching it and you should be able to light a large tube.

In looking at your video, I am confused about the two colors (blue and white) used for the pickup coil. Is there some reason why you are using two colors? Have you posted the number of turns in your coils?

[kamax]

@ kamax

Great video. I suspect that you do not have quite enough turns on your pickup coil to get over 400 volts out. If you increase the pickup coil turns by 50% the tube should light without touching it and you should be able to light a large tube.

In looking at your video, I am confused about the two colors (blue and white) used for the pickup coil. Is there some reason why you are using two colors? Have you posted the number of turns in your coils?

The blue/white color is only one wire, it's a bicolor wire who comes from the inside of a ethernet wire. I don't know how many turns, sorry, it has take me hours to wind the pickup. I just can say i have used 10m.

The output clearly depend on the transistor i use, with a:
2n2222a i get ~100V
2n3054 i get ~140V
I'm still waiting for a 2n3055 from the postal service. The volts i read are dc on a cap after a bridge.

On my last video i don't touch the tube, and a wire is missing 
But yes i need more power for a bigger.