Homebrew Vactrols

[Martin Czech]

As long as it is no monochrome laser diode, there will be enough light,
maybe even a blue LED will work. It is only two humps, i.e. two maxima
of sensitivity. This does notsay that other wavelength do not work.

I think that red LEDs emit a lot of light with small current, the brightes
LEDs I know are red. So it makes sense to use red LEDs for efficiency.

m.c.


:::Date: Tue, 18 Apr 2000 00:24:24 +0200
:::From: ">>>marjan<<<" <urekar.m at EUnet.yu>
:::To: Martin Czech <czech at Micronas.Com>
:::CC: ryckebu at ersg.san.mrms.navy.mil, synth-diy at node12b53.a2000.nl
:::Subject: Re: Homebrew Vactrols
:::Content-Transfer-Encoding: 7bit
:::
:::> CdS has two humps, one in red , one in green.
:::> 
:::> So green or red leds work. Red is more efficient.
:::> 
:::
:::
:::Some guitar effects I saw, used yellow LEDs (like
:::Roger Mayers'  phaser).
:::
:::
:::marjan