[sdiy] SVF excellent errors?

[ChristianH]

Shorting the BP defeats the resonance feedback, so the filter goes into
full resonance. 

Just the other day I had the effect of an SVF severely overdriving in
this situation, showing trapezoid waves on the scope. Mabe, if the
levels are matching, short trapeze plateaus can look similar to a
triangle?

Chris



On Fri, 11 Nov 2011 12:27:24 -0500 (EST) Harry Bissell
<harrybissell at wowway.com> wrote:

> not that 11/11/11 has been good to me so far...
> 
> you may have drawn enough current so that whatever is driving the circuit is current limiting
> (becoming a constant current source) and that charging and discharging a cap would makw a
> perfect triangle wave... ???
> 
> H^) harry
> 
> 
> ----- Original Message -----
> From: Karl Ekdahl <elektrodwarf at yahoo.se>
> To: synth-diy at dropmix.xs4all.nl
> Sent: Fri, 11 Nov 2011 12:19:51 -0500 (EST)
> Subject: [sdiy] SVF excellent errors?
> 
> Hi list, i just had something fun happening. Had the Bandpass output of an SVF accidentally shorting through low resistance (few ohms) to ground, this transformed the drummachine input of the SVF into seemingly pretty perfect triangles.. anyone got an explanation for this? Kinda liked how it sounded...
> 
> Karl