Hi
The reason for “unbuffered” is that there’s one less “block” in the device.
That means
less delay. Delay in an oscillator stage is phase shift and it “tunes” the
oscillator. If
it gets to far, the oscillator may have startup issues. Even if it’s in a
tolerable range,
twice the delay is
p...@phk.freebsd.dk said:
> But putting multiple '04 inverters in sequence was a well known method to
> shapen flanks, and I have always understood that as the reason for using
> three in the xtal clock generator setup.
They used to make a 74U04, U for Unbuffered, basically a simple analog
Dana Whitlow writes:
> Perhaps the author is trying to include Schmitt triggers to sort of emulate
> mechanical escapements.
> I've occasionally used the things (Schmitt triggers) to help square up
> sinewaves, but never in a case
> where I was concerned about stability or jitter.
>
>
Perhaps the author is trying to include Schmitt triggers to sort of emulate
mechanical escapements.
I've occasionally used the things (Schmitt triggers) to help square up
sinewaves, but never in a case
where I was concerned about stability or jitter.
BTW, how do three inverters constitute a
Richard Karlquist writes:
> He lost me when he started talking about quartz clocks utilizing
>
> Schmidtt triggers. Never heard of that before and I'm going on
>
> 50 years of designing oscillators.
I bet you just forgot about it: The classical 3-TTL-inverter
clock-generator was
He lost me when he started talking about quartz clocks utilizing
Schmidtt triggers. Never heard of that before and I'm going on
50 years of designing oscillators.
---
Rick Karlquist
N6RK
On 2021-09-07 11:08, Mike Feher wrote:
> I believe the macroscopic concept of entropy is applicable to
Looking for the HP 59309A Clock, that originally sold in 1970s (1974-1978),
for your HP Test Suite (HP-IB) or Time-Nuts Lab?
http://www.leapsecond.com/museum/hp59309a/hp59309a.htm
Accepts an external Clock reference (1, 5, or 10 MHz, switchable)
==
One has appeared on eBay, from solanotraders
I believe the macroscopic concept of entropy is applicable to almost every
field of physics. - Mike
Mike B. Feher, N4FS
89 Arnold Blvd.
Howell NJ 07731
848-245-9115
-Original Message-
From: Chuck / Judy Burch
Sent: Sunday, September 5, 2021 2:40 PM
To: time-nuts@lists.febo.com
Oops - I forgot to include which file to begin reading the paper.
Start at Intro.htm. The paper gives links to the next section at the bottom
of the page.
Mike
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A fundamental relationship between thermodynamics and time keeping has
recently been discovered. These articles in the public domain discuss
the matter.
https://arxiv.org/abs/2007.02217v1
A. N. Pearson, Y. Guryanova, P. Erker, E. A. Laird, G. A. D.
Briggs, M. Huber, and
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