[sdiy] using a vactrol for a voltage divider?

[Tom Wiltshire]

On 22 Jul 2008, at 01:58, nicolas wrote:

> The LFO you linked to uses a fourth method which is that the pot  
> changes the switching voltage of the schmitt trigger.  This works  
> fine if you are mostly interested in the square output, but isn't  
> so good if you want the triangle output as the amplitude changes  
> with frequency.  Not the usual way to make an LFO.

It's quite often done this way with Chorus circuits, since the  
decreasing triangle amplitude with increasing frequency is usually  
what you're after. Deep modulation at higher speeds gets a bit weird.

Regards,
Tom