View RSS Feed

Recent Blogs Posts

  1. Top 10 Electronics Inventions

    By Chris Francis
    (originally appeared on EEWorldonline)

    I don't mean the transistor radio or mobile phone, but electronic devices and circuits that have been significant and enduring. Some are not necessarily "inventions", depending on how you define an invention, but significant designs, devices or techniques. It will depend on your area of interest (and age). You might think the GaAsFET was the most significant invention (or creation), or the thermionic triode. ...
  2. Changing the Focus

    Those of us who have been in the PCB design business for more than a decade either have direct knowledge of, or have heard the stories about, how the profession has evolved since the late 70’s and early 80’s. The shift from drafting tables, Mylar, and hand taping, to light tables, digitizers and CRT’s, to autorouters and then auto-interactive routing, have all been part of the changing landscape. The large minimally lit “fishbowls” with raised floors have been replaced with individual cubicles, ...
    Categories
    Uncategorized
  3. Dimming LEDs

    By Bill Schweber

    As the use of LEDs for area lighting has grown dramatically, with both the use of LED-based replacement bulbs as well as LED-based fixtures for new construction (called luminaires in the trade), the issue of dimming these LEDs becomes more critical. LEDs require a very different technique for dimming than the conventional legacy incandescent bulb. The dimming technique differs greatly if the LED is being used in a retrofit installation that already has an incandescent ...
    Categories
    Uncategorized
  4. How to power and configure LEDs

    By Bill Schweber

    LEDs – light-emitting diodes – have largely supplanted other sources of light in many applications. They are used in applications ranging from small on/off power indicators, to small and large alphanumeric displays, to screen backlighting, and even for area and street illumination.

    It’s well known that LEDs are far more efficient than venerable incandescent lighting, and somewhat more efficient than fluorescent-based sources. While there are still specialty ...
    Categories
    Uncategorized
  5. RFID Tag and Reader Antennas

    by , 26th March 2017 at 16:24 (Anil Pandey : Electronics Design and Simulations)
    RFID stands for Radio-Frequency Identification. The RFID device provides a unique identifier for that object and just as a bar code or magnetic strip the RFID device must be scanned to retrieve the identifying information.

    RFID System Working Principal

    A RFID system has three parts:

    A scanning antenna
    A transceiver with a decoder to interpret the data
    A transponder – the RFID tag – that has been programmed with information

    ...
Page 1 of 66 1 2 3 11 51 ... LastLast