Captret - Capacitor and Electret

[void109]

Cant stop thinking about this.

This guy has some interesting ideas about dialelectric absorption with regard to the self-charging capacitor:

http://toptinkers.com/node/41

And references quantum tunneling as a possible explanation (and 2nd law violation), pointing to this article:

http://execonn.com/maxwell/maxwells_demon.html

[plengo]

@e2matrix,

I'm currently running a test with a 9V (actually 8,4V) NiCad, 150mAh.
I never could get this to work until I discovered that all my electrolytic
capacitors wanted to be positive at the can measured against the negative
terminal. So I used a ultra fast diode as shown in the attached drawing.
My NiCad has SLOWELY been gaining voltage from 7,36 Volt (yesterday)
to 7,56 Volt (today). I have no conclusions yet if the battery has gained
any real charge. One thing is for sure, I have repeated a shorting test of a capacitor
many times, and it always charge back to approx. 0,05 Volt. So the anomaly
of capacitor self charge is real. All my recharging tests with 9V depleted Duracell
batteries has been negative so far.

Alex.

Hello Alex. Just seeing your post makes me SO HAPPY man. So you are seeing this too. I guess you are one of the top not engineers here that is willing to give it a try even though it looks craizy.

I have about 5 different systems running now and some work and some don't. Very weird. I also noticed what you mention that some caps have the difference in potential different of ipbpointeless2 shows in his original schematics. Some caps "wants" to be connected differently even among the ones in the same batch, brand and manufacturer.

Fausto.

[Groundloop]

Fausto,

I did measure a brand new unused capacitor and the new one had - on the can
measured against the two shorted wires. My bigger capacitors are all used or
guttered from old PC power supplies and those has + on the can measured against
the - wire.

Best result for the self charging effect is to short both capacitor wires together
and then measure between wires and can. I think I did over hundred of shorts
but the capacitor still climbed back to a small voltage. So the effect IS there.
I will let my NiCad test run over night and measure the voltage tomorrow.

Alex.

[miki02131]

Here is a good tutorial on EC:

http://electrochem.cwru.edu/encycl/art-c04-electr-cap.htm

In particular, pay close attention to the Package Section. I will quote it here for you again:

"...The can into which the capacitor section is placed is made of 1100-alloy aluminum, which is of around 99% purity. For 25 to 50 mm (one-inch to two-inch)-diameter capacitors, the wall thickness is 0.022 inches. A butyl rubber gasket is placed on top of the header before the spinning operation, in which the case opening is folded over and pressed into the gasket, forming an effective seal of the system. The package is at the same potential as the electrolyte and cathode during capacitor operation, so when electrolytic capacitors are connected in series, care must be taken to insulate the cases from one another. Although the aluminum electrolytic capacitor case is at the cathode potential, it may not be used for the negative electrical connection because of high electrolyte resistivity and the long effective path from the cathode to the can. If the electrolyte were of much lower resistivity, eliminating the cathode and using the can instead might be a possibility. A safety vent is provided in capacitors so that the capacitor may relieve excessive pressure buildup in a controlled manner. This occurrence is known as venting, and is considered a failure mode. The vent may be installed as a rubber plug in the header or as a die-set slit impression in the can wall. The pressure at which the capacitor vents is predictable, and is usually designed to occur at about seven atmosphere pressure or even higher. The allowable pressure tends to be higher for small capacitors. After a capacitor vents, the electrolyte may evaporate out until the capacitance diminishes. "

After reading this you will quickly realize that the captret and its supposedly effects are complete misunderstandings on the part of non-linear thinkers.

I have a few high quality and mil qualified caps available for cheap. Those who are intersted, let me know. First come, first serve.

Miki Out.

[ibpointless2]

Here is a good tutorial on EC:

http://electrochem.cwru.edu/encycl/art-c04-electr-cap.htm

In particular, pay close attention to the Package Section. I will quote it here for you again:

"...The can into which the capacitor section is placed is made of 1100-alloy aluminum, which is of around 99% purity. For 25 to 50 mm (one-inch to two-inch)-diameter capacitors, the wall thickness is 0.022 inches. A butyl rubber gasket is placed on top of the header before the spinning operation, in which the case opening is folded over and pressed into the gasket, forming an effective seal of the system. The package is at the same potential as the electrolyte and cathode during capacitor operation, so when electrolytic capacitors are connected in series, care must be taken to insulate the cases from one another. Although the aluminum electrolytic capacitor case is at the cathode potential, it may not be used for the negative electrical connection because of high electrolyte resistivity and the long effective path from the cathode to the can. If the electrolyte were of much lower resistivity, eliminating the cathode and using the can instead might be a possibility. A safety vent is provided in capacitors so that the capacitor may relieve excessive pressure buildup in a controlled manner. This occurrence is known as venting, and is considered a failure mode. The vent may be installed as a rubber plug in the header or as a die-set slit impression in the can wall. The pressure at which the capacitor vents is predictable, and is usually designed to occur at about seven atmosphere pressure or even higher. The allowable pressure tends to be higher for small capacitors. After a capacitor vents, the electrolyte may evaporate out until the capacitance diminishes. "

After reading this you will quickly realize that the captret and its supposedly effects are complete misunderstandings on the part of non-linear thinkers.

I have a few high quality and mil qualified caps available for cheap. Those who are intersted, let me know. First come, first serve.

Miki Out.

This is all fine and dandy but it still doesn't explain the self charging that i and many others are seeing.