Joule Thief replications - not overunity

[resonanceman]

Once I did a circuit with a 650F cap that gadgetmall posted but I'm afraid using it cause don't want to charge it above it's voltage .
Is there a safe and simple circuit that if it goes beyond it's voltage can drain the charge or light a bulb for safety?
Thanks.

guruji

I am not sure how much  voltage the Ucaps can take.......I am sure that the  max voltage  acording the company is 2.7 V and not 3 V for a reason.

I am shooting for 2 to 2.5 V for mine
I like  a little safety margin.

I posted about my voltage control idea a few weeks ago........I was  promptly  told it  would not  work....... so I am not  going to talk  about it more until it is tested.
I  hope  to spend  most of this evening  building and testing it.



Other than the extra .3 V  I think the  zener diode  voltage control  ides would work .....at least with a small charger....... your zener has to be able to handle all the extra current.

[NewEnergyHope]

This is my latest experiment. Somehow the 2 diodes (and the LED) and the larger extra winding helps replenish the supercap during circuit operation.

Don't laugh, but one of my so far very sketchy theories is that supercaps are more like quantum batteries than they are capacitors and that just keeping the "plates" at charge allows current to be drawn from the capacitor as if it were a battery, the extra energy being supplied by "ZPE", Radiant Energy or one of the many other sources physicists hate talking about!

(Note this is the same 6 Farad cap as before and the biggest change the the circuit is the extra toroid winding. (If this indeed follows my "theory" the unique diode arrangement just keeps the plates on the supercap charged. Due to losses in the circuit (and in the supercap) this circuit WILL NOT run forever (but it does seem my attempts are making for longer and longer runs!)

[guruji]

Hi Nieves thanks for that schematic I will try that. Resonanceman yes it's 2.7v; I will look forward to hear about your circuit when you test it.
NewEnergy that circuit is interesting can one use it for a 650F 2.7v Cap?
Thanks guys.

[NewEnergyHope]

guruji, First, thanks for your interest in the circuit!

Yes, I would love to see what the circuit would do with a larger than 6F supercap (like for example a 650F).

The first thing is to charge the supercap with 1.5 to 2.5 volts (I do that with a 1.5V AA cell and the 6F supercap has no problem with it at all. I have also seen it done with 3V, but I WOULD NOT recommend that...)

I strongly suspect with the proper circuit setup the self-run time could be VERY LONG indeed. My little theory might even have something to do with the length of the run (again, I would not expect the circuit to run forever, because of component losses, but it could run long enough to get bored with it and end up putting it aside as a dim night light!)

(This also brings me to strongly believe a supercap circuit COULD be made to drive much more of a load than just a LED. For an example: a small personal DC motor fan?)

Overunity? No, but none the less a very practical energy device.

[guruji]

Hi Nieves that circuit works with no batteries?!
Amazing.