S
server
Guest
On Mon, 17 Jan 2022 16:29:44 -0500, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:
The ideal discriminator finds the centroid time of noisy pulses of
varying amplitude and width. And has zero insertion delay of course.
--
I yam what I yam - Popeye
<pcdhSpamMeSenseless@electrooptical.net> wrote:
jlarkin@highlandsniptechnology.com wrote:
On Mon, 17 Jan 2022 13:59:49 -0500, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:
David Brown wrote:
On 17/01/2022 15:44, Phil Hobbs wrote:
Pomegranate Bastard wrote:
On Sun, 16 Jan 2022 17:29:12 +0100, David Brown
david.brown@hesbynett.no> wrote:
On 16/01/2022 16:25, jlarkin@highlandsniptechnology.com wrote:
On Sun, 16 Jan 2022 13:49:15 +0000, Pomegranate Bastard
PommyB@aol.com> wrote:
On Sat, 15 Jan 2022 20:11:26 -0000 (UTC),
DecadentLinuxUserNumeroUno@decadence.org wrote:
John Larkin <jlarkin@highland_atwork_technology.com> wrote in
news:6nv3ugto7ejcn4lsdte4jrduf6oag2o1ph@4ax.com:
Conservatives are better engineers too.
You just can\'t stop spouting retarded, divisive stupid shit, eh?
You should have somebody sew that upper anus shut.
Best ignore the gullible old narcissist.
Several of them. They don\'t design electronics anyhow.
You do realise that people who actually /do/ design work - real work, on
real products - rarely discuss details of proprietary designs with
random strangers on the internet? The only people here who talk about
their work are amateurs (nothing wrong with that - it is not an insult
of any kind), retirees (again, nothing wrong with that) and people who
boast about how much better they are than everyone else, despite a
complete absence of any kind of evidence or justification.
Precisely. Couldn\'t have put it better myself.
Classically narcissistic behaviour.
Dunno--I discuss my proprietary designs here all the time, and put them
in books too. It helps my business, as well as sometimes generating
useful info for me as well as others.
IME the folks who hold their \'crown jewels\' super close to the vest tend
to overrate said jewels\' actual value by a lot. I\'ve had people tell me
\"in confidence\" things I\'d known for 20 years, such as that you need to
filter the drive to your TE coolers very carefully to avoid crap getting
into the cold-plate circuitry.
One big difference is whether the designs are your own property, or the
customers\'. In my work, the majority of what we do is design for
customers - I could not possibly give out information about those
designs to others. The same would apply to employees of a company.
If you own your company and make your own designs, then you have all the
rights and can discuss them as you want - but I think that would be the
case for only a very small proportion of professional engineers.
That\'s true, but it\'s a very different statement from the preceding.
I do a fair amount of code reading for patent and trade secret lawsuits.
The legal protections for produced source code are enough to curl your
hair, so you\'d expect that the code would really be something special.
From the tens of thousands of lines I\'ve seen of such \'crown jewels\',
the quality and the density of good ideas is far lower than on Stack
Overflow, say.
Sometimes that\'s why they want to keep it so secret
Could well be. A lot of it is real genuine crudware--a clever
engineering manager could set his competition back years just by leaking
it to them. \"Technical debt\", Venezuela style.
Most engineering - electronic or software - is not hugely innovative.
Good engineering is mainly about implementing solid, reliable and
cost-effective solutions. Revolutionary new ideas are relatively rare,
but of course they can be very important. (What is that saying?
Invention is 1% innovation, 99% perspiration?)
Edison said that because he was doing it wrong. (Just ask Nikola Tesla
next time you see him--he\'ll confirm it.) Edison introduced a very
important engineering metric--the inspiration/perspiration ratio--but
his quoted value of just over 1% shows a lot of room for improvement.
Larkin will claim his stuff is all new revolutionary ideas, but we all
know the value of his claims.
John and I have collaborated on several projects over the last dozen
years or so. He\'s one of the two or three best designers I know, and
great fun to design things with. I\'m hoping to do a bit of that next
week, in fact, when EOI is making a collective visit to Photonics West.
Bring proof of vax or they won\'t let you in.
Plus booster! Next year we\'ll all have needle tracks like junkies.
We spent an hour in San Diego with RS and DR, and it was a highlight
of my career. Putting smart and willing people together can be magic.
Yup. Designing stuff with a few smart people at a white board is the
most fun you can have standing up. (Maybe you prefer skiing, but then
you\'re more coordinated than I am.)
IIRC that occasion involved high-frame-rate youtube videos of a water
balloon cannon that were very illuminating about the dynamics of tin
droplets.
Then I got to thinking about discriminators. The Constant Fraction
Discriminator is superficially appealing and has, I suspect,
brainwashed generations of engineers and scientists.
I could show you what we finally did. Maybe you can explain it to me.
I\'d be interested. You and Joerg helped me out with a problem like that
back in, like, 2006--I needed to trigger stably on a detected laser
pulse from a not-too-stable tunable laser that produced 20-ps pulses.(*)
The energy varied by about 20% pulse-to-pulse when it was perfectly
tuned up, and more like 2:1 when it wasn\'t.
I eventually used a coax stub to differentiate the detected pulse, and
the built-in trigger functions of my 11801C sampling scope to pick the
right zero crossing.
Cheers
Phil Hobbs
The ideal discriminator finds the centroid time of noisy pulses of
varying amplitude and width. And has zero insertion delay of course.
--
I yam what I yam - Popeye