Joule Thief

[jeanna]

something i been playing with...
... and will light small lite bulbs of 110v - 220v
it will blow a neon out with a bang...lol
the inductor help feed the emf back to the cap and speed recharging
...

Hi kooler,
This is kool.

I am wondering what you have written after 800v on the bottom line just before the bridge.
It looks like 8a, but this does not make sense to me.

Also:
What kind of small light bulbs does it light?

This is almost like the circuit that MK1 used to determine the amount of voltage he got from his secondary.
The additional inductor makes this very interesting to me.


Thank you for posting this.

jeanna

[xee2]

@ kooler

Thanks for posting your results. What kind of transformer are you using?


@ jeanna

I think that means the diode brigde is rated at 800 volts and 5 amps.

[jeanna]

Thank you xee2,

Yes, that is what it says!

jeanna

[kooler]

thats a old bridge i had it is a 800v 6amp
i was just playing around with this rig ... its part of my other circuit i was playing with that is a bit to dangerous at the moment to post right now...
you could take the bridge out if you want and use a ac cap...
i was using a nonpolarized dc cap

as for the transformer... i think it is a audio transformer of some sort.. a bit larger than a fuji cam ..
it puts out a constant 331 volts dc thur a bridge

the L2 is just a 1'' toroid with 16 turns of 22awg
when the cap discharges the emf of the inductor comes back to the cap to help rechare it
i'm sure you guys can make this alot better

[resonanceman]

the L2 is just a 1'' toroid with 16 turns of 22awg
when the cap discharges the emf of the inductor comes back to the cap to help rechare it
i'm sure you guys can make this alot better

Kooler


If I am understanding  you  right     L2 and    your 1.5 uF cap make a resonant circuit ........so   the   light bulb would be lit  with AC

That would be a very efficient way to do it .

gary