Odp: [sdiy] diode war

Roman modular at go2.pl
Sat Oct 12 09:32:36 CEST 2002


> >>My tri-to-sine converter is made from 2 2V7 diodes.
> So, you just smoothen out the triangle by softclipping.
> That's a nice way of filtering. Should work a bit on any
> signal with a fixed amplitude.

here are the scopeshots:
http://romcio.multimania.com/vco_screens.html
scroll to the bottom for zener-shaped sine.
nice thing is also to move the input signal around 0V, i.e.
loosing symetry. Then it's shaped, well, asymatrically.
Sounds like a filter.

> 
> >>I used 4V3 (?) zeners in integrator feedback to prevent my
> >>filters from going crazy when opamp clips.
> And are they more or less a high cut 'filter' at loud levels?

yes. Thanks to those I can have stable SVF oscillation.

Roman





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