[sdiy] OSCar VCF and VCA, redrawn schematic

[HOSHUYAMA]

Hello list,

I have redrawn the schematic of VCF and VCA of OSCar,
and put it at my blog.

http://houshu.at.webry.info/200803/article_1.html

As usual, contents are in Japanese, but the schematic is
in English.

I hope you enjoy it.

Sam HOSHUYAMA
Saitama, JAPAN