Second Stage Joule Thief Circuits

[innovation_station]

I don't what you're talking about because in my reply to your statement I never said anything about how full a capacitor is. My reply to you was clearly about batteries. Which do you to talk about. Here's your quote,

In terms of conventional science, you can calculate the energy in a battery or capacitor. I've provided one example for 12V car batteries. As far as capacitors, I think everyone here knows the equations. If you want to know how full a capacitor is, then it would be the caps voltage rating.

Paul

i do agree you can achieve ou with batteries ...  caps are cleaner ...    all the way round ..

about what i quoted here

you bring up an extreamlly good point here

amps is crap ... good for work... slow work ...   volts are key   volts to amps in a cap ... 

is a CAP OU BY ORIGNAL DESIGN .... 

lol

is

i bet they make really good volts to amps ... convertors   or if you prefer translating devices...  may include batteries 

[turbo]

I said i charge this cap up to full capacity from a 1.4 volt battery and the battery is still 1.4 after i charge it.

This is likely to happen if you take but 650 Uf from a 1.4 volt battery...
What would you expect that it will drop by half a Volt??
No ...you can actually refill that cap many times before you will notice a voltage drop on the battery...while using regular equipment.

It's normal.
M.

[PaulLowrance]

This is likely to happen if you take but 650 Uf from a 1.4 volt battery...
What would you expect that it will drop by half a Volt??
No ...you can actually refill that cap many times before you will notice a voltage drop on the battery...while using regular equipment.

It's normal.
M.

It's not 650 uF. It's 650 farads, or 650 million uF,

http://cgi.ebay.com/Maxwell-650-Farad-Ultracapacitor-Electric-Vehicle-Solar_W0QQitemZ370233804626QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item5633a78752

[turbo]

Aha those Alien caps 

Well then it needs to be looked into 

[PaulLowrance]

Alien cap would be a cool name! 

As a comparison to energy density, WikiPedia states, "3-5 W.h/kg for an ultracapacitor compared to 30-40 W.h/kg for a battery). It is also only about 1/10,000th the volumetric energy density of gasoline."  Of course they're talking about a typical ultracap, but wikipedia also says in the same page, "Carbon aerogel capacitors have achieved 325 J/g (90 Wh/kg) energy density"

I guess one of these days capacitors will surpass the energy density of gasoline, but it's still far away.

Paul