05603 [alt-beam] Re: Die Hopfenprallplatte (was: Chloroplast mutation)

Alt-BEAM Archive

Message #05603

To: beam@sgiblab.sgi.com
From: Sean Rigter rigter@cafe.net
Date: Mon, 09 Aug 1999 19:09:05 -0700
Subject: [alt-beam] Re: Die Hopfenprallplatte (was: Chloroplast mutation)

Oops,

divide those energies by two cause the formula for energy in a capacitor is
1/2C*V*V

wilf

Sean Rigter wrote:

> By my calculation the energy stored in flash cap 160uf/300V = 14.4 Joules
> (watt seconds) compared to a super cap 1F/5V=25 Joules. However the flash
> cap has low Effective Series Resistance (ESR) and can discharge most of
> it's stored energy in a fraction of a second (depending on the
> inductance) so the maximum current and power are much higher but for much
> shorter duration.
>
> wilf
>
> Richard Piotter wrote:
>
> > A flash provides over 300 volts, but a lot current. Not exactly what
> > you'd use on SMA. If you can figure it out, great, but typicaly, you
> > need the current to drive throught the whole contracting process, and
> > then when released, it stretches. Good luck!
> >
> > --
> >
> > Richard Piotter
> > richfile@rconnect.com
> >
> > The Richfiles Robotics & TI web page:
> > http://richfiles.calc.org
> >
> > For the BEAM Robotics list:
> > BEAM Robotics Tek FAQ
> > http://people.ne.mediaone.net/bushbo/beam/FAQ.html

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