We should probably pop in and say we're still around!!
It's just been *very* busy.
Our internship at #CERN ended in February, then it was moving back to Germany to start our master thesis.
Our time there was incredible, but I'm glad to move toward this important milestone!!
Maybe we should write a blog post about it :>
Our new task is just as exciting though!!!
Design of a high gain transimpedance (I.e. A to V) amplifier!
She's prett, isn't she?
Oh, and there's been a lot of fun with new self hosted toys again!!
To aid with our Master Thesis writing, we set up our own #jupyter #jupyterlab server for data vis.
There's also #codeserver and our own #forgejo instance to always have access to the writing and code~
And did you know Code Server works great with the #latexworkshop plugin, including PDF preview?
You can completely ditch Overleaf and their horrible 150€/year plan (which you need for git and bibtex!!)
Good stuff <3
LTSpice has a really weird output format... Somewhere between CSV/tabbed but with polar coordinates and in ANSI//ISO8859 encoding...
But thanks to our selfhosted #jupyter instance debugging it was quite quick and easy, and with some python-rigging we now have gorgeous #matplotlib plots running!
The idea is to have one script that does all of the plotting, so that if we need to change fonts etc. all plots can be re-generated easily.
And they look goooood
TIA Core Version 2 - looking even more arcane than before!!
The old version used a LTC6268-10 - a great OpAmp with fantastically low leakage, bbbuuutt ... It grew unstable with input capacitance, noise level growing heavily until it clipped. Poor thing.
New version is using a dual-package ADA4817.
It's slower, which is why you put two after another to boost Bandwidth.
BUT 1/3 the voltage noise and it seems MUCH more stable.
We also took the liberty to just... Make it look a LOT cooler?
Why yes, we love taking a single ended 30kHz signal and splitting it into a differential one for an ADC.
Do they at least use proper twisted pairs?
Nah, apparently, their design idea was to use two separate SMA cables, one for each polarity.
The single to diff conversion really should be on the ADC board side ;-;
They don't even have a proper ADC driver amplifier on there!! Tsk tsk
Xasin, Neira & Mesh