About: Ibrar Ayyub

Basic Idea Behind Fax Machines Most of the early fax machine designs involved a rotating drum. To send a fax, you would attach the piece of paper to the drum, with the print facing outward. The rest of the machine worked something like this: There was a small photo sensor with a lens and a […]

Pittsford, NY, USA:  Saelig Company, Inc. (www.saelig.com) has introduced the ABI BoardMaster 8000 PLUS –a unique, versatile, self-contained, and easy-to-use PCB test system.  The BoardMaster 8000 Plus is a comprehensive set of test instruments, complete with built-in PC, for testing and fault-finding on almost any kind of PCB.  Incorporating a full range of test instruments […]

Building Up to NFC Back in 2004, three big companies — Nokia, Sony and Philips — got together with the goal of establishing a standard for near field communication technology. While these companies worked to standardize NFC, the technology that makes it possible dates back much further. And it all begins with the relationship between […]

Miami, Florida, January 22 2013  – T&M Atlantic today announced that There is a new addition to AKTAKOMs handheld oscilloscopes-DMMs, a new device series dual channel models ADS-4062 and ADS-4102 with a bandwidth of 60 MHz and 100 MHz respectively. AKTAKOM new digital oscilloscopes-multimeters have maximum real time sampling rate of 1 GSa/s (500 mSa/s […]

Electrostatic and Dynamic Transducers To hear what’s recorded on a record, cassette, CD, DVD or MP3 player, data stored on the medium must be converted into sound waves. This requires that the stored information be turned into an electrical signal, which then must pass through a transducer to convert the transverse electrical wave into a […]

The Mechanics of the Air Multiplier There are blades in the fan — you just can’t see them. The pedestal hides the blades. A motor rotates nine asymmetrically aligned blades to pull airinto the device. According to Dyson, these blades can pull in up to 5.28 gallons (about 20 liters) of air per second. The […]

Cycle related gadgets are always of interest to Gadget Master, so I was interested to see an article on New Scientist about a “vibrobelt”, described as “sat nav for your waist”. Basically, it’s a belt to help guide cyclists, with actuators indicating the relative direction to take – left, right, and forwards

Concept The customer’s demands were to develop and build a kit, consisting of a small mechatronic system with educational concept. In particular, he asked for a driverless robot for training purposes abroad. The idea behind this is that our customer needs a kit for sending it to partner schools around the world to help the […]

The 6502 CPU’s overflow flag explained at the silicon level  In this article, I show how overflow is computed in the 6502 microprocessor at the transistor and silicon level. I’ve discussed the mathematics of the 6502 overflow flagearlier and thought it would be interesting to look at the actual chip-level implementation. Even though the overflow […]

Make a Variable Resistor with 1 Million Settings Last week in my college physics lab we got to use these variable resistance ‘boxes’. They had two inputs and six dials, and could generate one million different resistances across the two inputs. I knew I had to have one, and why not make it myself? This […]