Round 2: Distortion on Mosfet based phasers experiment

[bioroids]

Hi!

I made some more detailed experiments with Osamu Hoshuyama circuits (http://www5b.biglobe.ne.jp/~houshu/synth/PhaseFet0205.GIF) Previous thread: http://www.diystompboxes.com/smfforum/index.php?topic=48370.0

I noticed the abrupt change of distortion, when using circuit #2, that Mark mentioned on the other thread. Is pretty notable.

Also, I finally succeded with circuit #4 and a variation of circuit #2 which I devised.

I also made a plot of resistance vs. Vgs for the 4069 mosfet, that I think can be usefull.

Here's the link for the one's interested: http://www.dedalofx.com/bioroids/experiments/e04_phaserdistortion.php

Regards!

Miguel