marcoreps posts
Posts: 464
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Mobile power station powering my whole lab for a day
Pretty excited to put a small damper on all the energy-crisis-fearmongering with only 4 solar panels. There may still be big problems ahead for industry, but at least the Reps Labs are safe from blackouts:
Uninterruptable power supply module for my 10V standards
That concludes the ADRmu preparation
Building a Thermal Test Chamber for XXL Arroyo TECSource
New devices that just work are boring, but Arroyo didn't want to send me a broken XXL TECSource
So uh I bought 11.75kWp worth of solar panels ...
so that the PPM farm can remain in operation independently of electricity costs. Maybe there's even enough power for a little AC unit 😎
Soldering bench upgrade Ep2
Double-killSmall nuanced update on 14. AprilSecond small update on 28. Sept
PPM citadel in the Harz national park?
All the photos: https://imgur.com/a/sEUIJK2
Chinese vacuum cleaner review like the good old days
Happy holidays 🎅🎄
What did Keysight do to the 3458A?!
Updated on January 3.: A few more little things after external proofreadingUpdated on April 16.: Final edit + we finally have a release date! May 1st
New lab candidate & unboxing bonanza
Freiberg house album: https://imgur.com/a/GS6iFdK
First 'light' with the huge microfocus source!
I also haven't forgotten about the higher res GbE image sensor I've shown briefly ... but that is somehow stuck in a resolution-limiting 'region of interest' mode and I haven't found out yet how to get to full resolution.
Importing PPMs from the national metrology institute
Finally I got the chance to measure my 3 electrical standards with freshly calibrated meters. TWICE 🤯
Goofing around with 2 thermal cameras
This is probably not the final version of this vid, because there's some blatant software piracy going on at 8:30 which might get me into trouble 😬
HP 3458A "repair" and inner workings
Probably my biggest video project yet ... probably still lots of mistakes to find and correct 😬
Thermal Mailbag: Heat flux sensor, Arroyo, Prema
Last house candidate: https://imgur.com/a/yJfh7IYArroyo 5400 teardown: https://imgur.com/a/27HQMifPrema 3040 teardown: https://imgur.com/a/inpkhUl
Quick trip to Switzerland
... and back home with a full trunk 😇
Draft: 10V Standards: Fluke 732A vs LTZmu
The Fluke calibrator saga continues. To import accuracy we need 3 transfer standards with good short term stability: 10V, 10 kOhm and 1 Ohm. In this video we are looking at 2 different 10V approaches.
Detecting Cosmic Rays with a Raspberry Pi
It looks like I can't give stuff away any more. Nice. Completely reasonable and sane policy there 🙄
Road trip and first look at high frequency light source
To be continued ......soon™
Golden Boi Teardown and more
Love that VPG channel with their 80s MS-DOS software https://www.youtube.com/watch?v=0dGZfz81Rfg
"0.1 ppm" open source 8.5 digit voltmeter from CERN
Friends, thank you for your patience, sorry that this took so long!Got enough raw footage for 2 more videos 😵
Little OSMU Update
I made an LT1166-based power output stage. Once finished it can be operated with a few ADCs and DACs to create 4-quadrant devices.First OSMU idea in Siglent PSU video: https://youtu.be/H-BiphMqp5g?t=260Current clamp simulation: https://tinyurl.com/y2kkknelKiCAD project (WIP, fixes not yet online) https://github.com/marcoreps/lt1166_bob
Fluke 5700A repair
Finally ... uh almost done 🙈PWM DAC needs some more love and a conclusion at the end is missing.Anything else you'd wish more details about? Editing the final version now
