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Captret - Capacitor and Electret

Started by ibpointless2, October 19, 2010, 06:49:51 PM

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nievesoliveras

#25
October 24, 2010, 09:37:30 PM
Is this correct?

Tito L. Oracion

#27
October 24, 2010, 10:23:55 PM
Thats fascinating!!!

gravityblock

#28
October 25, 2010, 02:05:31 AM
@Groundloop,

Is there a quick circuit you can design and test, so we can see if this effect is useable or not.  You mentioned the captret charges more when you let it rest, so I assume it won't accumulate a charge quick enough in order to keep a LED continously lit.  Even if the LED can flash every few minutes without an external charge would be OU and would be cool.  I have a feeling after so many flashes, it won't light up due to hystersis and will need an external charge.  I hope I am wrong on this.

Thanks,

GB
Insanity is doing the same thing over and over again, and expecting a different result.

God will confuse the wise with the simplest things of this world.  He will catch the wise in their own craftiness.

Groundloop

#29
October 25, 2010, 05:10:07 AM
@gravityblock,

It seems that this effect is much like the memory effect in rechargeable batteries.
If you drain a lead acid battery fully it will still have a small voltage. It will take
a very long time (shorted out) to remove that voltage. I was thinking of making a small
ocillator to boost the voltage to drive one ultra bright LED. But I need at least 1,3 volt
and approx. 1mA to do that. One capacitor will provide 0,1 volt @ some few pico Ampere.
So I will need A LOT of capacitors in series and parallel. Can't promise anything but if I
find a way to do it then I will post it here.

Groundloop.
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