Re: Instead scopes

On Mon, 9 Sep 2024 19:51:52 +0100, piglet <erichpwagner@hotmail.com>
wrote:

On 01/09/2024 3:09 pm, john larkin wrote:

On Sun, 1 Sep 2024 17:45:46 +1000, Bill Sloman <bill.sloman@ieee.org>
wrote:
 

On 30/08/2024 2:21 am, Jan Panteltje wrote:

On a sunny day (Fri, 30 Aug 2024 00:43:39 +1000) it happened Bill Sloman
<bill.sloman@ieee.org> wrote in <vaq1f2$jdj$1@dont-email.me>:
>

It's lot easier and quicker to bread-board a circuit in LTSpice than it
is to wire up a test circuit, but what that means is that you need to
make fewer real circuits and they are a lot more likely to work when tested.
>
That, on it's own, is enough to explain why labs look different today
than they did in the dark ages.

>
All it explains is boeings falling apart and astronuts ending up stuck at the ISS
and no moonlanding from the US, not even a probe.
Slimulations are _not_ realty and never will be.

>
But they can capture useful parts of reality, if you know what you are
doing.
>
John Larkin's simulated inductors tend not to have any parallel capacitance.

 
The trick is to know when it matters. ESR and core loss are usually
more important.
 
I designed this surface-mount inductor for my Pockels Cell driver,
after several tries using commercial parts. They all smoked.
 
It's wound on a specially marked Sharpie pen that we have carefully
reserved.
 
https://www.highlandtechnology.com/Product/T850
 
The grey gap-pad gives it some extra cooling. The board has lots of
thermal vias down to the water-cooled baseplate.
 
 
 

>
That sharpie formed coil looks like the turn-to-turn air-spacing is done
by eyeball? Can you find a bolt or screw with right pitch and diameter
to make winding easier?
>
piglet

I recursively used another Sharpie to make some tic marks, to space
the turns.