Joule Thief

[SkyWatcher123]

Hi folks, Hi freepow, that's essentially what I'm testing now with a circuit that nilrehob posted over at 'EF'.
I've been testing the circuit for a few days now and it is working very well at replenishing what is depleted from the input batteries.
I'm using AA NiMh cells and led off coil flyback back to parallel AA charge batteries, though with this low voltage input for this circuit I have to short out emitter and collector to jump start the oscillations in circuit.
Here is a link to that thread and a pic of circuit.
http://www.energeticforum.com/renewable-energy/3759-bedini-solid-state-oscillator-tesla-switch-combination-2.html#post154767
peace love light
tyson

[Flux4Energizer]

Hi Freepow... this circuit should  do what you're looking for. The two unmarked rectangles represent your switched JT circuit blocks. D1, D2 provide circuit isolation between JT's. Current load through LED approx 20Ma. 22ohm resistor can be increased or decreased to suit trial. Kind Regards

Looks like the circuit i described a few posts back (except for the diodes)  . Should work fine.

Regards,

Flux4Energizer

[freepow]

@ SKYWATCHER123    from freepow.

Great circuit, what is L1 & L2 ??  how many turns & what are they wrapped on ??

[SkyWatcher123]

Hi freepow, I'm using a bifilar coil I had from my bedini radiant charger, it has 18 gauge wire and around .6 ohms per coil strand and I have a large ferrite rod taken from audio crossover networks.
Though just about any bifilar oscillator should work, though you will probably have to briefly short circuit the emitter and collector of the transistor to jump start the oscillations at lower input voltages.
Still running the circuit and it is still replenishing the parallel AA charge batteries very well.

Took a new picture, this is my circuit as it is now.
peace love light
tyson

[xee2]

Joule thief toroid alternative >>>  http://www.youtube.com/watch?v=-Z04MmiS06E