https://www.allaboutcircuits.com/technical-articles/understanding-the-guanella-transmission-line-transformer/
" data-image-caption="The Guanella 1:1 balun. (Credit: Steve Arar)
" data-medium-file="https://hackaday.com/wp-content/uploads/2025/01/introduction-to-transmission-line-transformers-understanding-the-bifilar-coil-fig10.webp?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2025/01/introduction-to-transmission-line-transformers-understanding-the-bifilar-coil-fig10.webp?w=800">Even before entering the mystical realms of UHF design, radio frequency (RF) circuits come with a whole range of fun design aspects as well. A case in point can be …read more (https://hackaday.com/2025/01/29/using-guanella-baluns-as-impedance-transformers/)

Inside Vacuum Fluorescent Displays
https://hackaday.com/2025/01/29/inside-vacuum-fluorescent-displays/

VFDs — vacuum fluorescent displays — have a distinctive look, and [Anthony Francis-Jones] is generally fascinated with retro displays. So, it makes sense that he’d build a VFD project as …read more (https://hackaday.com/2025/01/29/inside-vacuum-fluorescent-displays/)

Lessons Learned, When Restoring An Amiga 1000
https://hackaday.com/2025/01/30/lessons-learned-when-restoring-an-amiga-1000/

In the mid 1980s, there was a rash of 16-bit computers entering the market. One of them stood head and shoulders above the rest: Commodore’s Amiga 1000. It had everything …read more (https://hackaday.com/2025/01/30/lessons-learned-when-restoring-an-amiga-1000/)

RGB LED Display Simply Solves The Ping-Pong Ball Problem
https://hackaday.com/2025/01/30/rgb-led-display-simply-solves-the-ping-pong-ball-problem/

A few years ago [Brian McCafferty] created a nice big RGB LED panel in a poster frame that aimed to be easy to move, program, and display. We’d like to …read more (https://hackaday.com/2025/01/30/rgb-led-display-simply-solves-the-ping-pong-ball-problem/)

Forgotten Internet: Giving (or Getting) the Finger
https://hackaday.com/2025/01/30/forgotten-internet-giving-or-getting-the-finger/

Hey, you know that guy in accounting, Marco? If you want to find out more about him, you’d probably go surf LinkedIn or maybe a social media site. Inside a …read more (https://hackaday.com/2025/01/30/forgotten-internet-giving-or-getting-the-finger/)

A 1962 Test Gear Teardown
https://hackaday.com/2025/01/30/a-1962-test-gear-teardown/

Although it sounds like some Star Trek McGuffin, a Q-Meter is a piece of test gear that measures the Q factor of a tuned circuit. [Thomas] got a Boonton meter …read more (https://hackaday.com/2025/01/30/a-1962-test-gear-teardown/)

Digital Paint Mixing Has Been Greatly Improved With 1930s Math
https://hackaday.com/2025/01/30/digital-paint-mixing-has-been-greatly-improved-with-1930s-math/

You might not have noticed if you’re not a digital artist, but most painting and image apps still get color mixing wrong. As we all learned in kindergarten, blue paint …read more (https://hackaday.com/2025/01/30/digital-paint-mixing-has-been-greatly-improved-with-1930s-math/)