I have written about ground loop problems for over 25 years. I have published a lot of material over the years in this blog and in the documents section. I have had over years plans to combine and update the material to a physical book or e-book format. Ground Loops Demystified publication is now available →
I saw this circuit in facebook at https://www.facebook.com/share/p/1FF5z48oYV/. The screen capture is included here under fair use (commentary and critique). The good thing is that this is a simple circuit, but the disadvantage is that there is NO sound out with this design. – there is a battery drawn without clear indication of the operating →
Cybersecurity can be a laughing matter. Epic FAIL comic strip is a new comic strip series related to cybersecurity topics is now available on-line at https://www.instagram.com/storax_ltd/ The comic can be also found at Storax homepage at https://stor.ax/epicfail/index.html →
Facebook viral circuit from https://www.facebook.com/share/p/1buynd6caE/ analysis Let’s break this down calmly, because this circuit looks cooler than it actually is It works, but in the “Facebook shorts” sense, not in an engineering sense. It’s a very simple sound-reactive LED circuit. Big problem: There are NO current-limiting resistors for the LEDs. It might work for some →
In what country this is the recommended practice? Picture source: Facebook https://www.facebook.com/share/p/1DrRjhJH2r/ I have been reached that If you should not use a knot for cable strain relief. ⚠️ Important: If this is a 230 V / mains-powered device, proper mechanical strain relief is mandatory for safety and compliance. A knot is not a safe →
This posting is here to collect cyber security news in January 2026. I post links to security vulnerability news to comments of this article. You are also free to post related links to comments. →