Author Archive

EU mandates USB-C charging

The European Parliament and the Council of Europe have announced the introduction of a universal charger for mobile devices is to be taken to use. The preliminary agreement on the reform of the Radio Equipment Directive means that certain electronic devices will in future be charged with the same charger. By autumn 2024, USB Type-C

Speaker to line level attenuator

I saw in Facebook DIY audio group a question about suitable voltage divider resistance values to step down an amplifier’s output (approx 28vrms) to for example around 2.8v. The aim is to use the speaker outputs of an integrated amplifier or AV receiver to run an external power amplifier. Its obvious that a 10:1 ratio

Audio transformer DC

Transformers will only work with a changing current (AC). Transformer only works on AC and can’t be operated on DC i.e. it has been designed to be operated only and only on alternating current and voltage. The transformer works on the principle of mutual induction, for which current in one coil must change uniformly. The

Ethernet category added to blog

Ethernet has risen to complete dominance for local area networks over its forty years of existence. The first Ethernet experimentals versions started in 1972 (patented 1978). The commercialization of Ethernet started in 1980′s. Today, Ethernet is everywhere. It’s evolved from a 2.93-Mb/s and then 10-Mb/s coax-based technology to one that offers multiple standards using unshielded

Friday Fun: Newton’s Pendulum (Gangnam Style)

Newton’s Pendulum (Gangnam Style) So much possible arrangements you can make with this thing. Amazing “I never thought I’d find myself rocking my head to Gangnam style after 10+ years and here I am vibing with the laws of physics.” If you liked this vdeo, you might also like Pendulum Waves video.

AMD Ryzen 7000 at 5 GHz

At its Computex keynote, AMD unwrapped what’s coming for new AM5 motherboards and gave a glimpse into Ryzen 7000 processor performance. AMD announces Ryzen 7000 CPUs with up to 16 Zen 4 cores based on TSMC’s 5nm process, PCIe 5 and DDR5 on an AM5 motherboard, coming in fall 2022. Those Ryzen 7000 CPUs can

USB port colors

Nowadays you can see USB A ports in many colors like black, blue, teal blue, yellow, red and other colors. For the most part, the color of the USB port indicates the version of the port, but there are few exceptions. This article will tell you what those colors usually mean. Please bear in mind