[sdiy] Starting a synth project

[Andrew Ison]

I recently restart my synth project,with the VCO no less.

What i find is non linear scaling irregularities,that is to say several 
octaves upwards from C0 exhibit reasonably precise tuning and then maybe a 
whole octave will become out of scale in a flat manner an then perfect pitch 
for a single note and then suddenly will  go very sharp for a few keys and 
then flat again.

To a novice not versed in the arts of knowing when to use a half watt 
resistor instead of a 1/4 i find this perplexing.

I assumed it maybe due to parasitic resonances or somesuch.

I was hoping it is a known of problem that is easily rectified.

I also blew a  650mA fuse the my Multimeter somehow,all my capacitors were 
0.02 nF all of a sudden.