Here is a new original design that I have been working on for some time. It's a Pulse Width Controlled phaser that uses a CMOS switch as variable resistors. The main advantage to this approach is that you don't need to match JFET transistors or LDR/Vactrols. I hope you like it! :)
http://www.diystompboxes.com/smfforum/index.php?topic=108823.0
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