Joule Thief

[jeanna]

Hi, here gathered at leisure small, self-joule thief
http://www.youtube.com/watch?v=Rm3LPMQ-xdU

Hi zhak,

What do you mean self?

When I make a jt circuit that blinks like that one, I am NOT satisfied.
It COULD be made to build on itself and blink faster, but I did not see that happen on that video
Is that your video?
If it is yours, please increase the resistance of the base resistor to make the blink faster.


@observer,
Are you really recharging a battery from your pill bottle?
How long does this take?
And I am not sure why you are doing this when you can run a jtc directly?
I suppose the cd player needs faster amps than the pill bottle can deliver. Is that it?

thank you,

jeanna

[The Observer]

Da

I think it's a Regular Old Stainless Steel Bolt... Cheapest Bolt you can get at ACE.

Jeanna,

I have not tried charging a NiMh with the pill jars yet...
     At this point it is next to a forgone conclusion that will work.
           The Pill Jars give off Amps and Volts just like any other power supply.
                   The more Pennies the more Amps... (voltage stays the same)

I am curious how long they will last.
I am wondering since there is no acid.. that the metals will not disintegrate or disintegrate very slowly..
Which would mean, with fresh water every now and again, the things would run virtually forever.

I also left out the possibility of a 2nd Joule Thief connected to the Jars that then Recharges the Batteries in my diagram.

The Reason to put in a couple rechargables is that the pill jars will give off energy 24/7...
               The stored energy can be used for the few hours a Lamp is actually used.
                    Smaller Pill Jars will thus be able to run the Lamp.

The Idea is that any item that is used intermittently (and possibly requires alot of Amps)
                                                            would use less "Pill Jar Volume" if the energy is stored during none use hours.

I think you kinda figured that.

The Observer

[zhak]

Yes jeanna is my video, I'll obey your advice to increase the resistance. Long working device paired with a super capacitor at 1F, almost a day

[jeanna]

Yes jeanna is my video, I'll obey your advice to increase the resistance. Long working device paired with a super capacitor at 1F, almost a day

WOW almost one day, on one touch of the battery to capacitor? wow.

This is what I find so very interesting about the joule thief.
I seems to be able to re-use some of the energy that gets into the system, and unless we push the limits on how little it can use (as you did) we will not suspect it is coming around again.
xee2 always insisted on using a capacitor across the battery leads, and I am beginning to always put one there too.
A 1F super cap is even better.

About my suggestion, if you are providing less mA than the joule thief can use, then increasing the resistance will not help to stop the flashing, but even then, you might get a steady-on light with a bigger cap, although you might have to wait for it to get started a little longer.

Since it was your video and I did not understand what you were saying,  I will ask you about the way you reversed the battery to the capacitor leads.
Was that just because they were reversed the first time?
or
is that a trick to get this to last longer?

Thank you,

jeanna

[zhak]

You speak about the super condenser (ионисÑ,Ñ€)?, 1F it prolongs a life for days.
jeanna
I have not understood your text a little!?
You want the scheme?