05585 [alt-beam] Re: Die Hopfenprallplatte (was: Chloroplast mutation)

Alt-BEAM Archive

Message #05585

To: beam@sgiblab.sgi.com
From: Sean Rigter rigter@cafe.net
Date: Mon, 09 Aug 1999 18:05:31 -0700
Subject: [alt-beam] Re: Die Hopfenprallplatte (was: Chloroplast mutation)

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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