New at Circuit Salad: Optical Envelope Filter

[midwayfair]

Ray Ring posted another new design, an optical envelope filter:

http://circuitsalad.com/2014/05/06/a-simple-ldr-envelope-filter-that-is-just-delightful-to-use/

Some discussion going on over at DIYSB: http://www.diystompboxes.com/smfforum/index.php?topic=107177.0

[micromegas]

Ray Ring posted another new design, an optical envelope filter:

http://circuitsalad.com/2014/05/06/a-simple-ldr-envelope-filter-that-is-just-delightful-to-use/

Some discussion going on over at DIYSB: http://www.diystompboxes.com/smfforum/index.php?topic=107177.0

I saw that this morning. A very interesting design, love the apparent simplicity of Ray's designs

[rullywowr]

The audio samples sound tasty!  Ray always has some kick ass stuff.  I'm intrigued.  Trying to find a suitable DIP8 rail to rail opamp which is common and accessible.

[midwayfair]

The audio samples sound tasty!  Ray always has some kick ass stuff.  I'm intrigued.  Trying to find a suitable DIP8 rail to rail opamp which is common and accessible.

Ray was suggesting the TL972. It's $1, but I can only find it at Mouser. I'm going to try the TLC2272.

[rullywowr]

Cool. Ray does use quite a lot of rail to rail opamps. I have some tlc2272 kicking around I'll give it a go.