[sdiy] small VCO core (was Temperature stable lin-exp converter with a CA3086 or CA3046)

[jorgen.bergfors at idg.se]

>How does one convert a triangle to a saw??

It only uses two op-amps and one section of a 4066.
It requires the square wave from the VCO core, in addition to the triangle.
There is a very minor glitch in the middle of the sawtooth ramp at high
frequencies, but on the other hand the sawtooth reset is quicker than on a
sawtooth VCO core.

/Jorgen