Dual Motor Control for Robots
Presented here is a simple circuit that can drive two motors for a small robot, allowing the robot to negotiate an obstacle course. Two light-dependent resistors (LDRs) are used to detect the obstacle and the motors are driven correspondingly to avoid the obstacles automatically. Two H-bridge motor circuits are used that can drive each motor forward or backward, or stop it, independently.
Circuit Protection for AC LED Lighting Systems
In recent years, light-emitting diode (LED) technology has made impressive gains in price, performance and manufacturability. Further improvements that optimise LED operation are expected to drive exponential growth in the LED lighting market. One of the most recent commercial developments is a family of high-voltage LEDs (AC LEDs) that can operate directly off line voltage without the need for an AC-DC converter.
Microresonators - Transmitting 40 communication channels with one laser
Interconnections in powerful computers and linking "blades" in data centers will increasingly rely on optical communication links. Currently, this still requires an individual laser with individual control circuitry for each channel. Now researchers at Purdue University have developed a new technology that allows a single laser to transmit data over a number of individually controlled channels, at different frequencies, simultaneously.
Read more: Microresonators - Transmitting 40 communication channels with one laser
Protect Electronics with Silicones
Silicone compounds are used in thousands of electronic systems to seal, bond, coat, and encapsulate components, enabling them to perform reliably under challenging conditions. Formulators continue to improve silicones to make them easier to use and to offer a wider variety of properties.
UK plans to bring ‘Useful’ Quantum Devices in two years
Arms race and space contests are the things of the past for the first and second world countries. They are now focused on the new prize: The Quantum Technology. Till recently, we saw that the United States was the clear-cut front-runner in the next-gen computing program. NASA, along with Google, was working with the most powerful quantum computer built hitherto.
Read more: UK plans to bring ‘Useful’ Quantum Devices in two years
Automated and Portable Test Solutions for RF Devices
With recent developments in technologies like MIMO, femtocell and LTE, the RF device testing is reaching new dimensions. Read on to find out what’s new in this field
Read more: Automated and Portable Test Solutions for RF Devices
Engineering students create real-time 3-D radar system
Spencer Kent stands nervously in front of Team D.R.A.D.I.S.' booth at Rice University's annual Engineering Design Showcase. Judging begins in about 10 minutes, and his teammate Galen Schmidt is frantically typing computer code into a laptop beside the team's custom-made radar system.
Read more: Engineering students create real-time 3-D radar system
