Building flashlights seems to be a fixation of mine. I built my first one at age 5 or so, and now that I’m nearing ten times that age, I’m still building flashlights. This time the project of choice was a high power LED flashlight with several interesting features: – It uses a Cree X-lamp high
A high power LED flashlight Continue Reading
Semtech has introduced an analogue timer chip that runs from 0.9V, but can drive LEDs at over 3V. Called SX8122, to the timer it adds: a simple battery charger, a boost converter, and a power-down controller. “It is designed for on/off button debouncing, delayed start-up timing, programmable sequencing and timing-out in toys, remote control, electric
like timer includes Sub-1V 555- LED driver and charger Continue Reading
Comes with all the hardware and software you need to quickly get your FPGA project going. Now you can focus on the real engineering. Meet the miniSpartan6+ and the Scarab IDE: When we came up with our board’s design, we looked at what was available in other boards on the market and enhanced it. Our
miniSpartan6+ : A Powerful FPGA Board and Easy to Use IDE Continue Reading
If it weren’t for the microchip, your smartphone would be size of a building and need its own power plant to work. Thanks to the integrated circuit and its modern incarnation in the microchip, electronics are a bit easier to carry around than that, and this week, Christie’s put one of the very first integrated
One of the world’s first integrated circuits goes up for auction Continue Reading
Disassembling Apple’s diminutive inch-cube iPhone charger reveals a technologically advanced flyback switching power supply that goes beyond the typical charger. It simply takes AC input (anything between 100 and 240 volts) and produce 5 watts of smooth 5 volt power, but the circuit to do this is surprisingly complex and innovative. How it works The
Apple iPhone charger teardown Continue Reading
A world record that has stood for more than a decade has been broken by a team led by University of Cambridge engineers, harnessing the equivalent of three tonnes of force inside a golf ball-sized sample of material that is normally as brittle as fine china. The Cambridge researchers managed to ‘trap’ a magnetic field
New superconductor world record set Continue Reading
Description The LM96511 is an 8-channel integrated analog front end (AFE) module for multi-channel applications, particularly medical ultrasound. Each of the 8 signal paths consists of a low noise amplifier (LNA), a digitally programmable variable gain amplifier (DVGA) and a 12-bit, 40 Mega Samples Per Second (MSPS) analog-to-digital converter (ADC) with Instant Overload Recovery
Chipset Nat Semi for portable ultrasound scanners Continue Reading
Interfacing hex keypad to arduino. This article is about how to interface a hex keypad to arduino. Hex keypad is a very important component in embedded systems and the typical applications are code locks, calculators, automation systems or simply any thing that requires a character or numeric input. This project will display the pressed key
Interfacing hex keypad to arduino Continue Reading
Copper-based connectivity has served us well for a long time and will continue to do so in applications where it is effective from a performance and cost perspective. For very-high speed and/or long-distance signaling, however, the material cost and physical signal limitations of using metallic conductors has driven eyes to other transport mechanisms. Fiber optics
Microcontrollers and Fiber Optics Continue Reading
Description The LT®3743 is a fixed frequency synchronous step-down DC/DC controller designed to drive high current LEDs. The average current mode controller will maintain inductor current regulation over a wide output voltage range of 0V to (VIN – 2V). LED dimming is achieved through analog dimming on the CTRL_L, CTRL_H and CTRL_T pins and with
High LEDs brightness get power drive Continue Reading
