Joule Thief

[innovation_station]

your right sparks not as big but still verry pretty 

yes i lit my led from this ...the scope shoot is with the led lit

ist

[MrMag]

IST,

That's not a very nice looking sine wave. What happened?

[innovation_station]

lol

well your not gonna like the next eather



i hooked up the next coil what happined ?   spikes??

ist

[Mk1]

@all

This is a very interesting document

Quote  "A minor advantage of a solenoid-wound coaxial choke over a ferrite-ring type is that the line impedance Zo remains constant throughout the system." 

http://www.smeter.net/feeding/transmission-line-choke-coils.php

[jeanna]

@All,

I am not having a lot of luck piggy-backing 2 jt's, or 2 toroids, that is on 1 transistor.

There are only a few ways to connect them that do not turn out the lights of the first jt.

I can add a wire to the collector side in parallel to it, and one to the base and one into the pos. rail of the breadboard. When I do this the new light is very dim and as I touch the secondary wires of the new toroid to a light the other light (from the first jt) goes dim by what appears to be the same amount of light.

If I connect any wire of the new jt to the emitter, all the lights go out.

The amperage with the new one added is about 0.027, so it isn't costing much, but it isn't adding anything either.

If anyone wants to suggest a better way to put these 3 wires of the new jt, I am open to trying it, but I think this won't be the way to go.

Has anyone else tried this?
If so, did you get the same nil results?

thank you,

jeanna