Joule Thief

[jeanna]

Jim,
This is fantastic information.
I have always hoped to try this.
I am so glad you did, and now we can know that we can recharge things of much higher voltage than the original because the spikes will do that.
So well done!!

Thanks,

any hope for a circuit?
Like a linear description without descriptive breaks?
Can it be done with keystrokes?
I will see if I have the hazens drawing to start with.

jeanna
edit:
This is the closest drawing I have but it still lacks the diodes.
But maybe you can start describing from here.
j

[innovation_station]

i have been busy aswell!

: )

new high speed battery recharge pulse motor .. 

: )

i charged a 12vdc cordless drill battery in like 10 min!

small 12vdc source ..   

and i have found a great vcr head from momma! : )  then i took the 6" hole saw in a drill press and punched a few holes!

hey why is it snowing in dc ?   lol   ; )

W

[jeanna]

It does seem that these spikes really do charge batteries very fast. I just finished watching freenergyinfo's set of a video of john bedini and it shows this really clearly.
http://www.youtube.com/watch?v=0aA8-0tctyw&feature=channel
No about joule thief, but see what spikes can do, since this is the whole point of making a joule thief with a secondary. It is great to see how easy it is to fill a battery.

Oh and notice that if you want more, just add more inductors IN SERIES and the pulses going through one will go trough them all. (This is the most important thing I learned with my multiple secondaries. John saw the same thing and applied it differently...cool.)

jeanna

[jadaro2600]

I built this, it seems to work, it produces minimal light though.  It consumes 0.78mA  Haven't taken voltage measurements, but I built it with two axial lead inductors - not joined on a unified core, it seems to function better with the inductors dissociated.

- - - - -

On another note, I haven't been able to get the 2n7000 to function with this circuit, it seems to leach massive milliamps - perhaps a mosfet isn't going to work like I want it to.

[xee2]

@ jadaro2600

I am just guessing, but maybe your circuit "jtc_res_2" will oscillate without the upper inductor. It looks like you may have made  a type of relaxation oscillator. But the upper inductor is needed to light the LED since that is what produces the voltage spike.

You come up with very interesting circuits.

It may work like this. The capacitor charges up through the resistor until the voltage is high enough to turn on the transistor. When the transistor turns on it looks like a short to ground and will drain the voltage from the capacitor through the resistor. When the capacitor voltage gets low enough the transistor will turn off again. When the transistor is on it is pulling a lot of current through the upper inductor so when the transistor turns off there is a big voltage spike from the collapsing magnetic field. You should be able to make the upper inductor really big and get a very big voltage spike.

EDIT: Lower inductor may not be needed. You may want to put a resistor in series the the positive battery terminal.