[sdiy] Soft sync?

[ChristianH]

On Mon, 16 Feb 2009 09:34:11 -0800 "David G. Dixon" <dixon at interchange.ubc.ca> wrote:

> Newbie alert:
> 
> I know that "hard sync" is overriding an oscillator's integrator reset with
> an external trigger.  What is "soft sync"?


As I understand it, hard sync injects a reset pulse after the comparator.

Soft sync injects some voltage before the comparator, so it only
generates a reset pulse if the oscillation cycle is already within a
certain percentage before the unsynced reset (that is, the added voltage
is enough to trigger the comparator prematurely).

Christian