Adding a wet/dry blend to a ring modulator

Started by Absentidei, February 19, 2013, 08:44:18 PM

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Absentidei

I'm trying to design a simple-ish true ring modulator using a xr2206 chip to generate the carrier frequency.
The way I'm thinking about doing this is to use a booster first to boost the input signal, send it to the first transformer, then add a buffer circuit after the output of the second transformer.

What I can't figure out exactly how to do is to add a wet/dry blend pot.
I'm planning to use a dual 250k blend pot, but I don't know where to connect it.
Most specifically, I'm not sure where I should get the dry signal.
I guess it must be after the boost, but should I have some kind of buffer so the blend pot doesn't load down the input for the first transformer?
It'm a bit confused.

Paul Marossy

#1
Look at the Maestro ring modulator schematic. You're looking at doing the same thing with how it splits the signal at the input and combines them at the end. Only thing is that you're using an XR2206 chip instead of how it's done on the original Maestro circuit. There's no blend pot, there's a control for the normal signal and one for the ring modulated part. I don't think you'd be that happy with a blend pot, it would be too limiting if you ask me. It's hard to explain why unless you've played a Maestro ring modulator or a derivative of it, you'd understand.