Comments on: Effect of Light on Diodes http://www.muzique.com/news/effect-of-light-on-diodes/ Stompboxes, Schematics, Guitars and Electronics Thu, 09 Feb 2012 00:01:56 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: Mike Duncan http://www.muzique.com/news/effect-of-light-on-diodes/comment-page-1/#comment-791 Mike Duncan Mon, 14 Sep 2009 15:30:24 +0000 http://www.muzique.com/news/?p=125#comment-791 as far as i know i've only heard of using a photo sensor in conjunction with an LED in an enclosed space like the one you've created, very close together. the light the led puts off is picked up by the photo sensor and that data from the sensor is used to define the amount of x... as far as i know i’ve only heard of using a photo sensor in conjunction with an LED in an enclosed space like the one you’ve created, very close together. the light the led puts off is picked up by the photo sensor and that data from the sensor is used to define the amount of x…

]]> By: Martin http://www.muzique.com/news/effect-of-light-on-diodes/comment-page-1/#comment-496 Martin Fri, 08 Aug 2008 18:27:58 +0000 http://www.muzique.com/news/?p=125#comment-496 As far as I know light changes the parasitic capacitance of diodes. This change of capacitance is what is used in applications that use diodes as light sensor. So the forward voltage will not change with different light intensities. The capacitance is quite small (pF) so I don't expect any noticeable change in sound at the clipping stage of stompboxes. As far as I know light changes the parasitic capacitance of diodes. This change of capacitance is what is used in applications that use diodes as light sensor. So the forward voltage will not change with different light intensities. The capacitance is quite small (pF) so I don’t expect any noticeable change in sound at the clipping stage of stompboxes.

]]> By: Tedmich http://www.muzique.com/news/effect-of-light-on-diodes/comment-page-1/#comment-492 Tedmich Fri, 01 Aug 2008 16:40:25 +0000 http://www.muzique.com/news/?p=125#comment-492 The PAIA Quadrafuzz (Anderton) used LEDs to clip: http://www.paia.com/ProdArticles/quadrafz-design.htm never tried light on them to see effect... and a shorter wavelength is apparently needed for irradiation, see: http://itp.nyu.edu/physcomp/sensors/Reoprts/LEDAsPhotodiode The PAIA Quadrafuzz (Anderton) used LEDs to clip:
http://www.paia.com/ProdArticles/quadrafz-design.htm
never tried light on them to see effect…

and a shorter wavelength is apparently needed for irradiation, see: http://itp.nyu.edu/physcomp/sensors/Reoprts/LEDAsPhotodiode

]]> By: yamhill http://www.muzique.com/news/effect-of-light-on-diodes/comment-page-1/#comment-491 yamhill Fri, 01 Aug 2008 16:20:15 +0000 http://www.muzique.com/news/?p=125#comment-491 I'm curious what would happen if you used LEDs as the clipping diodes and then exposed them to light from other LEDs. I’m curious what would happen if you used LEDs as the clipping diodes and then exposed them to light from other LEDs.

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