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Science Forum Index » Electronics Forum » Varying a pen laser voltage with audio signal how? tia sal2
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| temp@temp.com |
 Posted: Sun Mar 25, 2007 1:04 pm |
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Guest
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Varying a pen laser voltage with audio signal how?
Greetings All
I'm trying to vary the voltage of a pen laser by using audio frequencies
(homemade analog switch /potentiometer I guess). I've created a laser
that will transmit audio
http://www.scitoys.com/scitoys/scitoys/light/light.html#laser_communicato
r
but I'm not sure how to fine tune it. I would like to have the audio
control how much power the laser gets.
Example: if the audio doesn't play the laser doesn't get any power. The
thing is I'm not trying to use the audio signale as a digital switch
on/off. I'm trying to use the audio signal to vary the power the laser
gets or at least use the audio signal like a potentiometer / analog
switch. Is this possible?
Tia SAL2 |
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