NNTP-Posting-Date: Thu, 21 Nov 2002 08:55:58 -0600
Subject: Re: Piezo Ignitor to power an LED -- any ideas?
Date: Thu, 21 Nov 2002 07:00:56 -0800
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On Thu, 21 Nov 2002 14:15:16 GMT, Kevin McMurtrie
>In article <email@example.com>,
> J81 wrote:
>>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.
Do you happen to know a good way for me to test the output power of
the ignitor, given that I anticipate it being at 10,000 volts or more?
See, I thought that the output power would be about one micro-ampere;
0.000001A. According to the rough education I have when it comes to
transformers, stepping 10,000 volts down to 10 volts should increase
the amperage up to .001A, or 1 milliamp. Dropping the voltage down
even further, to 1 volt, should grant me 10 milliamps, no? 10ma at 1v
should be enough to get at least some light from an LED, I would
I lack hard data on the behavior of a piezo ignitor and what the
absolute minimum time period, current, and voltage would be, which is
why I bring my question here. Being able to test the output of my
piezo ignitor would be extremely helpful.