Doing it all in 4069s (Was: Re: [sdiy] New Vco (new images))

[Theo]

Rene's original design did this, tom put the 072 in there.

> Magnus Danielson wrote:
> 
> >
> > Hmm interesting!
> >
> > This kind of rings a bell in me, I've actually considered the oddball
> > idea of building a synthesizer with 4069s as the only active
> > component.
> >
> > A 4069 is basically a high gain inverting amplifier. If you look at
> > the above VCO, you should be able to remove the TL072 by using two
> > more of the 4069s inverters. Just think of it, it is indeed possible
> > even if it requires some more thougth.
> >