About: Ibrar Ayyub

TE Connectivity ‘s circular Type Z32 LED holder provides a solderless power connection to the LED chip-on-board device, Sharp’s Mini Zenigata. Direct attachment of the LED holder to the heat sink using standard screws secures the LED without damaging or cracking the substrates that could lead to latent field defects, says the supplier.

How Does Silicon Photonics Work? Marcos Hung writes: Imagine a world where it takes just one second to download a terabyte of data. Well, thanks to Intel, this possibility might seem nearer than you think. Years of research in silicon photonics have produced the 50G Silicon Photonics Link. The technology uses a combination of lasers and […]

In the Beginning: Etching Tin Thomas Edison is credited with creating the first device for recording and playing back sounds in 1877. His approach used a very simple mechanism to store an analog wave mechanically. In Edison’s original phonograph, a diaphragm directly controlled a needle, and the needle scratched an analog signal onto a tinfoil […]

Probably, some of you have tried buying cool but cheap products from Ebay. Like some of you, I also have bought items from Ebay several times already. One of the items that I got from Ebay is a small ENC28J60 based ethernet module. As you can see from the image above, the ENC28J60 module is […]

Lets have some practice and write simple AVR LCD menu routine. For this we need to write LCD control library. I decided not to use one from AVRLIB. LCD controlling isn’t difficult just a few lines of code unless you want to make it more universal. I want to demonstrate how LCD menu control may […]

Features Wide Operating Input Voltage Range: 4.5V to 38V 10A DC Typical, 12A Peak Output Current Output Range: 0.6V to 6V ±1.5% Maximum Total Output DC Voltage Error Differential Remote Sense Amplifier for POL Regulation Internal Temperature, Analog Indicator Output Overcurrent Foldback and Overtemperature Protection Current Mode Control/Fast Transient Response Parallelable for Higher Output Current […]

Virtual Reality Immersion In a virtual reality environment, a user experiences immersion, or the feeling of being inside and a part of that world. He is also able to interact with his environment in meaningful ways. The combination of a sense of immersion and interactivity is called telepresence. Computer scientist Jonathan Steuer defined it as […]

What is Autofocus? Autofocus (AF) really could be called power-focus, as it often uses a computer to run a miniature motor that focuses the lens for you. Focusing is the moving of the lens in and out until the sharpest possible image of the subject is projected onto the film. Depending on the distance of […]

Controlling numeric LCD isn’t so tricky as it may look like. O course you can find numbers of LCD libraries. One of more universal you can find in AVRLIB library for WinAVR AVR GCC compiler. Main disadvantage of such universal libraries that they compile all functions even if you don’t want them. This way huge […]

Battery-operated equipment often will benefit from a power-on indicator. The indicator, however, can waste significant power. In situations where a low-duty-cycle blinking indicator provides an adequate indication of the power being turned on, the simple circuit described here should prove useful. Figure 1 Q1 and Q2 function as a current source and push a constant […]