[sdiy] VCO that goes SHARP in highest octaves??

Richie Burnett rburnett at richieburnett.co.uk
Wed May 11 13:57:54 CEST 2022


> One issue when looking at HF oscillations is sometimes the scope probe
adds enough capacitance or resistance to stop the oscillation...

Then the "oscillator going SHARP" condition might go away when the probe is 
connected!?

Neil Harper, I guess the VCO does eventually go flat again at some point 
higher than a C8 pitch?  The pitch errors you mentioned in cents aren't 
huge.  Does it get worse and worse above the C8 or does it get better again?

-Richie, 


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