[sdiy] SAW core VCO flyback time

[Donald Tillman]

> On Aug 30, 2016, at 4:28 PM, Tom Wiltshire <tom at electricdruid.net> wrote:
> 
> Ok, so the point of worrying about the reset time is because of the potential effect on the tuning, right? But that's not insurmountable, and reducing the actual reset time is only one of a number of ways to go at the problem. In fact, given that you're not going to be able to reduce that reset time to zero, there will be a need to compensate it somehow, in which case, it doesn't seem to matter much how long it is (to me, at least). Just compensate more, or less - whatever.
> It seems like the effort would be better spent on the compensation methods rather than the reset time, since shortening the reset time isn't going to eliminate the need for compensation - just make it less serious.


The problem is reset time, and so reducing the reset time is the most direct solution to the problem.

Indirect solutions have side effects and can be difficult to calibrate.  We could certainly talk about them; it's a separate topic.

As for myself, I avoid using sawtooth VCO cores, and prefer Quadrature Trapezoid and triangle cores.

I'd actually need a compelling reason to use a sawtooth core.  Given that a sawtooth wave isn't found in nature, with the exception of bowed strings, a sawtooth core that mimicked other aspects of a bowed string would be interesting to me.

  -- Don

--
Don Tillman
Palo Alto, California
don at till.com
http://www.till.com