Opamp inductor eq

[antonis]

Yeapp...

It sould be better for Vref cap to be 10 times bigger, at least, than the bigger series resonance cap (3.3μF in you design) for Vref to be considered AC ground..

[hans h]

Thanks, I'll use a 220 uf cap then. Once again I'm learning a lot from this build. Just goes to show that a lot more knowledge is needed than just modeling it in ltspice