Sebastian

Electronics enthusiast and author of the YouTube channel and the electronics blog.

[Sebastian @BalticLabEE]

I'm only 1,800 subscribers away from the YouTube Silver Play Button 🥈✨ If you haven't subscribed yet, this is your sign. Circuit design, RF & antenna topics, amateur radio, science projects, it's all there: https://t.co/ohXInNdA6G

[Sebastian @BalticLabEE]

This signal comes straight from space 🛰️ It's the amateur radio repeater onboard the ISS (~400 km up 🌍), relaying signals from Earth as it passes overhead.

Downlink: 437.8 MHz 📡
Doppler shift: ±10 kHz ⚙️
Watch: https://t.co/Foh9Z7z2hj

#hamradio #hamr #ISS

[Sebastian @BalticLabEE]

How clean is your RF signal? 📡 Tested the Retevis Ailunce HD2 and the results are alarming ⚠️
• 3rd harmonic (2m): -32 dBc
• 2nd harmonic (70cm): 24 dB suppression
• Even the 10th harmonic still at -42 dBc
Clear FCC & ETSI violations 🚨
Full breakdown: https://t.co/eI92J1j3Xz

#hamradio #hamr #amateurradio

[Sebastian @BalticLabEE]

This video walks through a bench-top, mostly standard-compliant conducted-emissions test setup according to the automotive standard CISPR 25 using the voltage method. It covers the complete setup and shows how measurements are performed on both the supply line and ground return, how differential- and common-mode noise can be separated for troubleshooting. https://t.co/o3ZZg4XWWf

[Sebastian @BalticLabEE]

Conducted Emissions on the Bench: This article pulls back the curtain on CISPR 25 conducted-emissions testing, demonstrating how a fully functional voltage-method setup can be built and operated on a standard lab bench. https://t.co/PbFusR4yeC

[Sebastian @BalticLabEE]

RF magic: A look inside the HP 8753B source assembly. RF engineering at its finest!

[Sebastian @BalticLabEE]

🔴 Live Now: Live webinar about the use of bridge capacitors in isolated power modules on my YouTube channel. https://t.co/9s3bcZwm8w

[Sebastian @BalticLabEE]

Is this popular switching converter really EMC garbage? Viewers questioned my setup and the LED load-and yes, both mattered. But even in a proper CISPR 25 setup, the converter still flunks Class 3 limits at just 1 A. https://t.co/4wZfBv8yME

[Sebastian @BalticLabEE]

This 2.4-2.5 GHz solid-state power amp pushes 30 W with excellent harmonic suppression. Built on LDMOS tech with a 5th-order filter and VSWR < 2:1. RF engineering at its finest! ⚡📡 https://t.co/i6ujWMkvs6

[Sebastian @BalticLabEE]

Mains power is dirtier than your ex's browser history. Hook it to an oscilloscope and you'll see just how noisy reality gets. Filtering isn't optional; it's survival. ⚡ https://t.co/BIOl4QocBm

[Sebastian @BalticLabEE]

@WurthElectronic I baked some of those in an improvised flowers of sulphur test and compared them against others. They do what they're advertised to do, I couldn't get a single one of the WRIS-RSKS to fail. 👌🏻

[Sebastian @BalticLabEE]

What's inside an HP YIG oscillator (3.8-6.8 GHz)? Peek at the tiny YIG sphere where electron spins dance in a magnetic field to create ultra-stable, low-noise microwave signals. Precision physics packed in a metal can-let's crack it open! https://t.co/ZynpapV4UL

[Sebastian @BalticLabEE]

Webinar: Designing Robust Transient Protection for DC/DC Converters https://t.co/7jE8W5st2U

[Sebastian @BalticLabEE]

What actually happens when the ground plane is missing beneath a signal trace? This video provides a hands-on demonstration of how a break in the ground plane affects electromagnetic compatibility (EMC). https://t.co/aRfDokTpEa

#Arduino , #Arduinoprojects , #Circuitbasics , #Circuits , #Diyprojects, #Electrical , #Electricalengineering , #electronic , #electronics , #ElectronicsTutorials , #engineer , #Engineering , #hamradio , #Maker , #Physics , #Science, #STEM , #tech , #Diyelectronics

[Sebastian @BalticLabEE]

High-frequency tech can feel like black magic. Take this ceramic cylinder in an X-band radar. It's a dielectric resonator: a "roundabout" for electric fields, shaping waves via interference to precisely select frequencies. Wild what it can do, right? https://t.co/iSEgcTGM1Y

[Sebastian @BalticLabEE]

Worth knowing: Inductor orientation does matter in practice. Winding direction affects electric field noise! For fast switching, connect the start (dotted end) of the inductor to the switching node to minimize EMI.

#electronics #electrical #hamradio #maker

[Sebastian @BalticLabEE]

@THYZOID1 Delicious! Don't eat it all at once!

[Sebastian @BalticLabEE]

EMC issues can sneak in unexpectedly - your cables might radiate more noise than your circuit. Learn the key difference between common and differential mode noise and which causes more radiated trouble. Watch the video to troubleshoot effectively: https://t.co/4G7yeTOlH7

#hamradio #electronics #ElectricalEngineering #EMC #maker #Electrical

[Sebastian @BalticLabEE]

@THYZOID1 It needs an eggplant emoji... Next to the GHS hazard pictogram...

[Sebastian @BalticLabEE]

RF current probes measure high-frequency currents without breaking circuits—-just clamp around a cable. Fast, reliable, and ideal for EMC testing, they're key tools EMI troubleshooting.

#Electronics #hamradio #emc #emi