On Tue, 06 Mar 2012 08:50:12 -0800, John Larkin
wrote:

On Tue, 06 Mar 2012 08:58:27 -0600, John Fields
wrote:

On Tue, 6 Mar 2012 01:22:33 +0100, "petrus bitbyter"
wrote:


BTW. Although the circuit may do for the project at hand, I wonder why so
many people spend so much time on an obsolete circuit.

---
It's just for "fun"; a response to a challenge from John Larkin to
start a discussion by posting an original circuit for a zero-crossing
detector.

Looks like it worked!

It did; at least you tried. And it is a nice illustration of the
many-layered hazards of haywire async logic design.

---
Ah, but there's yet more to come, illustrating how the lot of you who
can't make decisions between clock transitions are crippled.

Stay tuned...
--
JF