Opto-Fet switch

[helos]

Hello,
I've read somewhere in DIY stompbox forum that opto-fet (like the one used in the Opto Tron switch) could produce distortion when the applied signal exceeds 100mV. Is this real?

So let's say that I have a pedal built with an optical switching system, would it produce distortion if I put an overdrive pedal in front of it? Putting a OD pedal would probabily make the signal greater than 100mV, thus a optical switch would distort... 


BTW, what can you say about the 4N35? Is this a good alternative to the H11F1?

[flanagan0718]

I've used the optotron and the Lumen many times. I have to admit that I haven't put an OD in front of it but I've certainly put fuzzes and all kinds of stuff with no distortion.


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[helos]

I've used the optotron and the Lumen many times. I have to admit that I haven't put an OD in front of it but I've certainly put fuzzes and all kinds of stuff with no distortion.


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Ah ok... that reassures me a little 
What's the Lumen? I've never heard about it...

[WormBoy]

What's the Lumen? I've never heard about it...

A specific PCB for opto-fet switching that is/was offered by Grind Customs FX: http://www.grindcustomsfx.com/product/gcfx-lumen/.