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NNTP-Posting-Date: Thu, 21 Nov 2002 09:18:51 -0600
Subject: Re: Piezo Ignitor to power an LED -- any ideas?
Date: Thu, 21 Nov 2002 07:18:51 -0800
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On Thu, 21 Nov 2002 14:56:06 GMT, "Sir Charles W. Shults III"
> Why not use a rare earth magnet moving through a coil? You can get a nice
>amount of power out of that. They even make flashlights that use it- you shake
>the flashlight and the magnet creates enough current to charge it (really
>charging a capacitor) which provides light...
>My robotics, space and CGI web page - http://home.cfl.rr.com/aichip
Unfortunately I can't say why, but I need to use the piezo ignition,
or the general impact-causes-electricity effect of piezo elements.
I've seen those flashlights though, and they're quite cool. :)
The way the idea idea worked in my head was to get to the point where
I could use multiple clicks of the piezo--or multiple piezo ignitions
in parallel--to charge a capacitor. The capacitor would then slowly
discharge over time into the LED. The next step after that would be
running power through a pulsed power supply such that the LED blinks
rapidly enough that it's perceived to be constantly on, but uses
significantly less power than it would if it were.
Any further ideas would be appreciated. :)
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