Captret - Capacitor and Electret

[hidave]

Hi Dave,

Can we please have a link to this instructable ? Or at least a thread title ?

or maybe a diagram here.

I like the idea of being able to charge a battery using only a cap and diode.

Regards, Penno

Simple Free Energy Self Charging Battery Charger. No Diode, Just Electrolytic capacitor.
All Due credit goes to ibpointless2 , this is only my variant.

@All
My circuit is simple.
9v battery > + goes to capacitor +
battery - is attached tightly to housing of capacitor
capacitor - is connected to capacitor housing.

I use 250v 2200 uf electrolytic capacitor with bare metal housing, take off the film cover to expose aluminum casing, charge takes approx 5 hours for 9v battery. 5v-9.5
For faster charging, tank up more caps in series.

[hidave]

USE PRECAUTION - I am not LIABLE for anything.

It is possible to construct a very large electrolytic cap quite easily.

Materials:
Roll of  paper - I use brown kraft paper, must withhold wet fluid. I soak paper in electrolyte for about 1 hr to get good saturation.
Roll of Mylar plastic
Electrolyte - 50% Antifreeze
ribbon wire
12 ga insulated wire for post.
Empty can with lid (paint can Hardware Store, remove inside paint with wire brush or paint strip acid, recycle canned food, aluminum soda cans etc. - best result with aluminum) .2" taller than paper.

Roll paper and mylar creating a spiral coil - bi-filar, Mylar must be shorter than paper as to avoid shorting if it contacts the top of the metal enclosure. Make sure that the plastic side face paper and the aluminum layer is inside. Keep the coil as tight as possible and make enough to fill the can leaving .2" space when placed inside the can.

Attach ribbon wire with cellophane tape to each side of the mylar film, ensuring that the wire cuts down at 90 degrees perpendicular to the coil. Attach ribbon when coil diameter reaches hole for conduction post, just like in a electrolytic cap. Drill 2 holes on can cap, hole size to tightly fit conduction wire. Finish wrapping the coil. Wrap the outside of the coil with cellophane tape securely and place in can. Solder ribbon to conduction post. Fill with electrolyte and cap the bottom end to prevent leakage.

I am testing electrolytes to see which one works best. Mylar is cellophane dielectric with aluminum coating. There are many peculiar electrochemical behaviors of Al such as self induction etc, I am testing acidic and alkaline electrolytes. Anyone got a link to more info will be greatly appreciated.

For charging 12v Lead Acid, you need to construct 1 gallon size caps, wire in series for faster charge time.
Pesto, Ultra captret

[broli]

hidave I think in your excitement your post on the previous page got very confusion. I suggest you draw your stepwise setup rather than describe it with words. Anyway thanks for the diy cap explanation.

Edit: I attached a drawing of your supposed fast charger, can you tell if that's all it is?

Edit2: Corrected polarity.

[e2matrix]

hi hidave,  thanks for sharing your setup.  Can you say what exact diode number you use? 
   I also just have one suggestion that would further prove what you described.  Get two batteries at the same starting voltage.  Run both down to the same amount.  Put one in your circuit and let the other just sit.  Measure voltage on both after the one in the circuit is charged back up.  Most alkalines will recover a fair amount of voltage after sitting a while even though they are not quite as strong in providing current.  I think this needs to be ruled out before getting too excited about this.  I'll try getting time to do something like this. 
   Also thanks for the reminder on Cap building as I recently found a big roll of metalic mylar stuff at a garage sale.  I know it's a huge cap just waiting to be built

[e2matrix]

broli,  I don't think you have polarities correct from what hidave said.  Thanks for the diagram but check the polarities.   I think it should be like this