Serge waveshaper

[Eric at Svetlana Electron Devices]

>>I reviewed the patent described below.  There's much patent gobbledygook
but if I read it correctly, the VC wave shaper is a >>simple circuit that
can act as a voltage follower at one extreme of control voltage to full wave
rectifier at the other extreme in >>a continuous fashion.  And it suggests
that this can be done using an LM3900.  Do I understand this right?

Hmmm. Now that I have a copy of this circuit, I can see how to 
implement it with vacuum tubes.......next weekend would be a nice
time to build a breadboard. Let you know how it works out.

Eric Barbour
Svetlana Electron Devices
Portola Valley CA USA