All about electronics and circuit design

CPU Benchmarks and Hierarchy 2020

When it comes time to buying a CPU for your desktop, you’ll find a dizzying collection of model numbers and specs from both Intel and AMD. Tom’s Hardware has listed the best CPUs for gaming and best processors for work. If you want to know how each chip stacks up against all the others, this

Sine wave inverter technology

An ideal power inverter will produce same kind of power that is available from mains outlet, which typically means sine waveform 60 Hz 11-120V AC or 50 Hz 220-240V AC. That kind of power source can power all mains powered devices as long as enough power is available. Where power inverter devices substitute for standard

Modified sine wave inverters

This is a continuation to my Power inverter designs post. The first post was about general details of inverters and square wave inverters. Because square wave inverters are not suitable for many applications. The next better inverter category is so called modified sine wave inverter. Modified sine wave inverters are less complicated than sine wave

CentOS has been effectively killed

On Tuesday, Red Hat CTO Chris Wright and CentOS Community Manager Rich Bowen each announced a massive change in the future and function of CentOS Linux. Moving forward, there will be no CentOS Linux—instead, there will (only) be CentOS Stream. CentOS Linux is dead—and Red Hat says Stream is “not a replacement”. CentOS Stream, founded

Electronics shops in Helsinki and near Helsinki in Finland

Electronics component shop are dying. My nearest electronics component shop Yleiselektroniikka in Espoo Finland at Luomannotko 6 just closed it’s shop few weeks ago. They still sells online. The remaining shops are much smaller and much farther away on other nearby cities (Helsinki and Espoo). The way seems to be now to return to mail

Friday Fun: 5G protection shield issues

Buying a 5G protection shield seems to be a zero sum game where you always loose: If you get product that works as advertised you will loose your connectivity and if you buy a non-working you loose your money to a scammer. Conspiracy Theorists Buy Faraday Cages To “Protect” Themselves Then Complain When They Work

The largest radio telescope is no more

A huge radio telescope in Puerto Rico has collapsed after decades of astronomical discoveries. The Arecibo Observatory in Puerto Rico was one of the largest radio telescopes in the world. It features prominently in the last part of the 1995 movie GoldenEye. At that that time the crash was fiction, but fiction became in some