Mathias MagdowskiJan 19

Ziemlich viel Equipment für eine praktische Übung im Modul #ElektromagnetischeVerträglichkeit!?

Klar, aber nur so kann man "mal eben" die frequenzabhängige Impedanz einer Gleichtaktdrossel messen – hier mit einem #AnalogDiscovery2 von #Digilent sowie einem #Impedanzanalysator E4990A von #Keysight.

Hier gibt es die Aufzeichnung des Live-Streams bei Twitch:
https://www.twitch.tv/videos/2674221180

Gary @N8DMTMay 25, 2025
@hamchallenge HC46S Write a useful computer program. Created SW interface to read a Mini-Circuits ZX47-55 RF Detector using an Digilent AD3 interface module. Used free LabVIEW Community Edition for programming environment. SW provides a nice stable readout of the detector in dBm. Simple calibration values yield pretty-close output level & temp display. This will be a nice addition to the home lab (once the detector module is mounted onto an AD3 interface board). #HamRadio #RFTest #Digilent
Show threadGary @N8DMTMay 21, 2025
Believe that I always learn something (sometimes lots!) while writing code for should-be-simple lab projects. This is certainly true with this simple RF power meter project. Here’s the Community Edition LabVIEW front panel that is reading the Mini-Circuits ZX47-55 power detector (via Digilent AD3 converter) while being driven by my ADALM-PLUTO SDR TX output at 100 MHz at -40 dBm. Still more fun ahead with this before calling it good enough. #HamRadio #RF #SDR #Digilent #GoodStart
Xasin, Neira & MeshJul 15, 2024

Wish us luck!
We want to go ahead and ask our soon-to-be PhD supervisor if we can slide in a side project of ours - a I/Q Down/Upmixer for the #Digilent #AnalogDiscovery3 !

Our main PhD topic will be a high MHz to low GHz frequency range fluid analyser, more precisely to create a more tailored analog/digital frontend for it.

And I think we can make the reasonable case that a first prototype can be a generic I/Q downmixer, to try it out :>

Show threadMathias MagdowskiMay 24, 2024

Hier sind auch noch die Bilder von dem kleinen #Experiment zur Messung der frequenzabhängigen Impedanz eines Widerstands & Kondensators mit Hilfe des Impedanzanalysators eines #AnalogDiscovery2 von #Digilent.

R: Betrag konstant, 0°-Phasenwinkel

C: Betrag fallend, -90°-Phasenwinkel

Show threadMathias MagdowskiMay 22, 2024
Leider "nur" 25 Personen im zweitgrößten Hörsaal der #OVGU, dafür haben wir ein nettes #Kahoot-Quiz gespielt und ich habe als Experiment mit dem #AnalogDiscovery2 von #Digilent die frequenzabhängige Impedanz eines #Reihenschwingkreis|es gemessen.
Show threadMathias MagdowskiMay 14, 2024
Ich habe auch erfolgreich meine ersten beiden interaktiven Seminare über Filter für #ElektromagnetischeVerträglichkeit-Anwendungen gehalten, mit Live-Demonstrationen von Geräten von #Digilent und #PicoTech.
Eine Aufzeichnung hat auch funktioniert.
1. Vortrag: https://www.twitch.tv/mathiasmagdowski/v/2144582295?sr=a&t=386s
2. Vortrag: https://www.twitch.tv/mathiasmagdowski/v/2144678156?sr=a&t=467s
Filters for Electromagnetic Compatibility Applications - mathiasmagdowski on Twitch

mathiasmagdowski went live on Twitch. Catch up on their Science & Technology VOD now.

Twitch
i4cy 📌Apr 24, 2024
The #Analog Discover Instrument by #Digilent offers a simple way to test the frequency & phase response of operational amplifiers. Using it here to show a #BodePlot of the ubiquitous 741 operational amplifier, connected as a voltage follower. 741s work up to about 30kHz. #OpAmp
[25/02/2020]
DG1JAN 🇪🇺Apr 3, 2024
New Tool Day 😁 #Digilent Analog Discovery 3. All- in-one electronics lab. Ufb - so it will be possible for me to work on some smaller projects even during biz trips in my hotel room 🤩
Søren KjærsgaardDec 16, 2023

I wanted to see if there was any visible pattern in the flicker sequence of the small LED ‘Candle’, so I used the #digilentinc #digitaldiscovery and recorded two minutes of ‘flicker’.
I used some vintage 74LS123 and 74LS132 to ‘signal condition’ so I got two outputs: the raw signal which has PWM (brightness) and a sequence with a pure on/off, stripped from the PWM.

I found no reoccurrence during those two minutes 🤷🏼‍♂️
So the random generator is likely based on some analogue circuit rather than being shift register based.

Other fun facts: the raw PWM frequency is about 350Hz. I found PWM levels (brightness) from 30% to 90%. It’s mostly 100% on though, only occasionally dipping at those random (flickery) events.
And everything in the flicker timing seems to revolve around intervals of 100ms, occasionally a 50ms offset may be added/subtracted, but only once in a while.. 🤔

#electronics #testandmeasurement #xmas #engineer #digilent #siglent #electronicscuriosities