[sdiy] VCO reset time

Ian Fritz ijfritz at earthlink.net
Wed Jun 2 17:03:39 CEST 2004


At 09:27 PM 6/1/2004, harrybissell wrote:

>1)  What is a good ramp reset time ?   How fast have you seen ramp reset
>be ?

A carefully designed Terry Michaels type design will reset in around 
0.3-0.5 ms.  You can get a faster discharge by using a high current MOSFET, 
but then you run into serious problems with leakage and excess 
capacitance.  Discharge rate is not the whole story, as has been discussed 
here numerous times.

>2) How many octaves do you expect (in tune) without resorting to HF
>compensation

Depends what you mean by "in tune".  I don't suppose you want to tell us 
that, either.  :-)

   Ian




More information about the Synth-diy mailing list