Joule Thief

[Mk1]

@all

You need to see that!  http://jnaudin.free.fr/html/tripole.htm

[Mk1]

@all

[jeanna]

@Jeanna
No the metal can is just a different package . I have Lots of silicon Transistors that are "Canned" Look up the number

OK,
I guess it started with the number 2N2222 this one also has A so it is 2N2222A.
Thanks for that quick reply.

Thanks for the offer on the transistor. Maybe, but if these are hard to get, I want to keep going for the easy to get and easy to assemble unit for people to put together simply and by themselves.
========

Here is a little more to compare the 2 transistors. Someone asked this about 10 pages ago. I popped in the black one I had and it nearly killed the light in the ckt. But this is very bright. Maybe the other was shot. I could toss it or sequester it.

OK

I put this in a new circuit I am working on. Same circuit, different jt. My toroids until the others arrive are too small to fit many secondary loops, so I am still in single loop mode. This jt is wound with only 6 bifilar turns and that takes one half of the ring. I figure if the mags in the ring move a little in one way the whole thing is moving, so it needn't be going all around to work. (thanks MK1 for that concept)

So, this jt is finished like the evilmadsci type but only wound 6 times instead of 11 and the total is then 12 loops, 6 each way. I made a 1 turn secondary using 24 gauge tele wire. I am using a 820r Resistor, battery at ~1.25V

With the N3904 transistor

the amperage draw of the whole circuit is 0.035A
and the rectified voltage on the secondary is 0.278V and  0.3V


With the 2N2222A transistor, (brighter)

the amperage draw of the whole circuit is 0.050A
and rectified voltage on the secondary is 0.328V, 0.332V

So, it seems to me that although this 2N2222A gives a brighter light, it does so at the usual cost in amps. However, it does also give a higher voltage on a 1 turn secondary.

I will try a few more things and get back later,
thank you,

jeanna

EDIT ADD wow willya look at that date? 1997 JLN labs... thank you! we're running to catch up!

[innovation_station]

You shown nothing yet, but “him” did .

It “consumed a little” only because it needs a little; u can’t beat a school’s physic ; “him” did…

yep no need to beat anything ...

just REWTIRE EM 

IST

[Light]

can’t do it neither no matter how u call it...

MK1, do you think it's really levitating?