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From: Kevin McMurtrie
Subject: Re: Piezo Ignitor to power an LED -- any ideas?
User-Agent: MT-NewsWatcher/3.2 (PPC Mac OS X)
Date: Thu, 21 Nov 2002 14:15:16 GMT
NNTP-Posting-Date: Thu, 21 Nov 2002 06:15:16 PST
In article <firstname.lastname@example.org>,
>I've got this half-baked idea to use a piezo ignitor to power an LED
>which needs 2.5v at around 15ma to 20ma. I'm currently under the
>impression that my piezo ignitor and piezo ignitors in general put out
>micro-amperes of power, at around ten thousand volts or more. I'm
>wondering if it's possible to step down the voltage to 2.5v to briefly
>power my LED, or possibly charge a capacitor which will power the LED
>over a short period of time. If it is possible, how would I go about
>I believe a running shoe was manufactured at some point that had
>little flashing LEDs which were powered by a piezo ignition like I'm
>speaking of, but I can't for the life of me remember who made them.
>Thanks in advance for any help.
A piezo ignitor will not power an LED or anything else. The total power
released from the hammer's strike is too low.
It's hard to find data on the blinking shoes. I suspect they use a
lithium battery but it could be generated.
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