Joule Thief

[Mk1]

@gadget

I got something for you Resonant Frequency of Secondary Circuit , like used by the Tesla on his coil , if you match one with the jt resonant freq , could increase output creating a opposing field .

http://deepfriedneon.com/tesla_guide.html

[xee2]

deleted... was answer to an old, old post by mistake.

[WilbyInebriated]

Is it true that a magnet must be moving to conduct a current?

Anyway, even if that is true.
The assist happened when I added the magnet, which means it was moving.
The light went on as soon as it snapped into place.
I was then able to remove the magnet and the light remained on and as bright as before.

It makes me wonder how much lower the voltage could have been; or if the  combo voltage frequency could have been much different.

@Bill
@Gadget
@Jim,

thanks.

@All, I have a comment that belongs at the thread
http://www.overunity.com/index.php?board=13.0
It is about adding magnets to the earth.

jeanna

congrats on getting it working!

what happens if you leave the magnet in place and turn the circuit on?

[xee2]

what happens if you leave the magnet in place and turn the circuit on?

Good question. I assumed that is what was done.

[jeanna]

Thanks Wilby,

It wouldn't turn on this morning.
I guess it is marginal.
I got it to turn on by having the magnets in place and plugging the battery in then holding one hand on the tube and the other hand on the magnet, until it lit and the light spread a bit, then I moved my hand up the tube to the other end and slowly let go; first the light then the magnet.

After about 10 more seconds the whine got higher in pitch.

This is the 15 watt grow light made in Hungary. It is a lot easier to start than the 5 watt made in China.

I am using a freshly recharged battery 1.35v and I will time the stay-on power today. With the fuji , it was 2 hours straight on an alkaline camera battery.

I will report back when the light goes out.

In order to get 100uF across the battery rails I put 2 47F in series. I could add another one. The jumper is right there. Should 150uF be better? I could even use one of those fuji caps if that would help.

I still do not get why, but xee said it helps to keep the power surge from slowing things down too much when the cap is there, or something like that.

I will finish running this timing test for now, now that it is back on.

thank you,

jeanna