[sdiy] VCO Tuning goals

[Ian Fritz]

At 06:46 PM 10/6/2009, Aaron Lanterman wrote:
>The EML state varible filter uses and interesting "differential
>integrator" that has two capacitors. It's not "switched," but it may
>provide inspiration.

Or see my switched differential integrator oscillator in EN #111 (1980).  I 
developed this further a few years ago, and even had it on my website for 
many years.  To match the caps I made each one from a parallel pair, so it 
was easy to find matched pairs.

Ian