[sdiy] MCT2 Optocoupler questions

Andy Eakin aeakin1 at matrixblues.com
Thu Jan 22 16:15:15 CET 2015

Thank you to whoever replied, I see it in the archives, but due to my 
DNS provider botching a notification from ICANN, my domain was down for 
about 48 hours.

Anyhow, that DP filter is awesome! In some of his example it almost has 
a formant effect.


On 1/19/2015 6:47 PM, Andy Eakin wrote:
> I posted this over at Muff's but with the recent board issues,
> visibility is a bit low.
> Long story short, I am in possession of about 80 of these little
> buggers.  While I have not worked with optocouplers before, I have
> always understood them as an on/off switch for isolating (thinking MIDI
> interface or high voltage switching).  Looking through the datasheet
> http://www.ti.com/lit/ds/symlink/mct2.pdf
> I found some things that have arouse my curiosity:
> "Base Lead Provided for Conventional Transistor Biasing"
> and
> This leads me to believe that I could drop one in place of any similar
> NPN BJT and use the LED as a current controlled fun bit.  Is my thinking
> right?
> I would love to experiment but my bench is still packed in boxes from a
> recent move.
> Andy

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