ePanorama.net

All about electronics and circuit design

New LED ring macro light

I bought Fuji HS20 camera few months ago (just some months before the model was discontinued). HS20 is a pretty good superzoom digital camera. It has a very long zoom lens and good macro properties. I have taken many of the photos posted recently to this blog using this camera. To take good macro photographs

Class D amplifier module

A class-D amplifier or switching amplifier is an electronic amplifier where all power devices (usually MOSFETs) are operated as binary switches. They are either fully on or fully off. The term “class D” is sometimes misunderstood as meaning a “digital” amplifier. While some class D amps may indeed be controlled by digital circuits, the class

War on DIY Electronics

Is electronics heading to be less and less hackable? DIY site iFixit has been keeping tabs on the tech world whilst providing handy self-repair guides for popular electronics. Now the site maintainers have seen trend that electronics products seem to become intentionally harder and harder to fix in recent years. The New MacBook Pro: Unfixable,

Happy 25th Birthday, GIF

Happy 25th Birthday, GIF. 25 years ago (on last Friday) the Graphics Interchange Format was released, and the world has never been the same again. The GIF was originally released by CompuServe to replace RLE – a file format which was limited to black and white only. But the GIF evolved over the next 25

Google Blockly

I saw yesterday an interesting new web-based, graphical programming editor. Google Blockly — a Language With a Difference tells about a new Scratch-like graphical language, Blockly. You program with it by dragging and dropping code blocks onto a design surface. Blockly is written in JavaScript and runs inside web browser. All the code is free

Linus Torvalds wins Tech’s ‘Nobel’

Linus Torvalds Splits Tech’s ‘Nobel’ With Stem Cell Pioneer. What do Linux and stem cell research have in common? Answer: They’re both considered “life-enhancing technical innovations” by the Technology Acadamy Finland, a foundation that is awarding a prestigious award called the Millennium Technology Prize in Helsinki yesterday. Linux creator Linus Torvalds (King of Geeks) and

Ethernet trends

Without Ethernet our networked world would cease to exist. It’s the ubiquitous standard for local area networks. The internet is probably Ethernet’s greatest triumph. Practically every server that delivers content to the internet is networked via Ethernet. Without Ethernet development the internet will choke. Society is moving to a new level of interconnectedness that’s built

Who really invented telephone?

It’s not always clear who is the real inventor of many well known inventions. I just read an interesting article in EDN magazine: Meucci acknowledged as telephone inventor, June 11, 2002. It tells that United States Congress acknowledged Italian immigrant Antonio Meucci as the true inventor of the telephone just ten years ago. Meucci began

Display measurements book

The International Committee for Display Metrology (ICDM) and The Society for Information Display (SID) have published a new standardized way to measure electronic displays. Information Display Measurements Standard (IDMS) document consists of standard measurement procedures to quantify electronic display characteristics and qualities. The hope is that Information Display Measurements Standard (IDMS) serves standards organizations that