From: Winfield Hill
Subject: Re: zero-power toggle circuit; was, how to master electronics
Date: 16 Nov 2002 06:09:29 -0800
Organization: Rowland Institute
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> Winfield Hill wrote...
>> I'm not very happy with the above scheme. ...
> I can picture a few things too, like arriving this circuit
> in my in-box, and not making it to my out-box, hehe.
> Often, it seems that the more you 'improve' it, the worse it
> gets. I'd go for a simple 4013 d-flipflop ...
What you say is true, there's often a stage in a new design
where the drawing gets rather messy, looses its elegance, and
may even be downright ugly. For me that's generally a sign
to continue exploring looking for a more satisfying circuit.
I'm not comfortable with a 4013 as the answer here, it needs
input conditioning, etc, is rather large, and it's specified
with an absolute maximum of 18 or 20V, is not recommended for
use above 15V. Despite your one-part for-the-fun-of-it test-
it-to-destruction experiment, one shouldn't use it above that,
so a regulator is also required. But you knew that. :)