Recent Posts

Follow

Follow X

Sign up   |   Log in

  • Minimum length of 8 characters.

    Getting down to EMI suppression device basics

    Electromagnetic waves from ambient sources can induce unwanted electric currents in circuits, best avoided by paying careful attention to design basics, particularly in the use of capacitors for EMI suppression. EMI suppression capacitors are used to filter any noise from an electronic device by reducing the input impedance of the device.

    Such interference has both natural and man-made source, ranging from electrical noise from appliances to Sunspot activity and the Northern Lights; all potential sources of disturbance to our electronic devices.

    The Battery Chronicles

    Follow

    Follow X

    Sign up   |   Log in

    • Minimum length of 8 characters.

      Spontaneous combustion hints at limits of Li-ion tech

       

      Forget snakes in planes, and creepy clowns; the spontaneous combustion problem with Samsung’s Note 7 mobile phone has spooked an entire industry.

      After replacement phones ignited, engineers still can’t say for sure if the smoke bomb effect is the result of a battery flaw or due to a circuit design bug, possibly in the phone’s processor. As a result, Samsung has ditched its popular Note 7 and recalled all units.

      Robotics & AI

      Follow

      Follow X

      Sign up   |   Log in

      • Minimum length of 8 characters.

        Farmbot founder: Mr. Greenjeans with a pocket liner

         

        When Rory Aronson was studying mechanical engineering at California Polytechnic State University, he attended an elective course in organic agriculture where he learned about a tractor that used machine vision to detect and cover weeds, thus eliminating the need for herbicides or manual labor: the tractor cost over $1 million dollars.

        Inspired by a new vision for agriculture automation – and the DYI/Maker movement – Aronson published a white paper outlining the goals of a project to “Grow a community that produces free and open-source hardware plans, software, data, and documentation enabling everyone to build and operate a farming machine.”

        Aronson began working on the project full-time in 2014 thanks to funding from a grant from the Shuttleworth Foundation, aided by a firmware and software development team.

        Innovation

        Follow

        Follow X

        Sign up   |   Log in

        • Minimum length of 8 characters.

          Discovery: bending semiconductors generates electricity

          Discovery: bending  semiconductors generates electricity

          In 1880 Jacques and Pierre (wife of Marie) Curie discovered that pressure generates electrical charges in some insulating crystals such as quartz and tourmaline, a phenomenon the researchers termed the”piezoelectric effect.” Later they noticed that electrical fields could deform piezoelectric materials. This effect is called the “inverse piezoelectric effect.”

          Now, in a recent development first reported in the journal Nature, a research team from the Institut Català de Nanociència i Nanotecnologia (ICN2) in Barcelona have discovered that semiconductor materials also generate electricity in response to bending, an effect the scientists termed “flexoelectric.” Such materials, they found can generate more charge than insulators, and, like the reverse piezo effect, electrical fields also deform “flexo” materials.

          The Energy Imperative

          Follow

          Follow X

          Sign up   |   Log in

          • Minimum length of 8 characters.

            Seeking power solutions? Here’s a topology cheat sheet

             

            The Power Topologies Quick Reference from TI is an indispensable guide for systems designers looking to understand and select the right power topology that fulfills the requirement of the system including cost, size, time to market and production volumes.

             

            Power Topologies Quick Reference Guide

            More: here