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  1. Types of Ground in Electrical Engineering

    Electrical Ground is the reference point in circuits from which voltages are measured. Using the symbol of ground we can make our circuits looks simpler. Three types of electrical grounds are:
    1. Simple ground
    2. Digital Ground
    3. Chassis ground
    4. Earth ground

    Simple ground
    This type serves as simple reference point from which we designate all components. The left side of image below contains 12 V battery in series with a resistor. The right side displays same circuit ...
  2. Capacitive RF MEMS Switch Design and Simulation

    by , 14th October 2017 at 13:25 (Anil Pandey : Electronics Design and Simulations)
    The switching is required in many applications at low as well as at high frequency. RF MEMS switches are the specific micromechanical switches that are designed to operate at RF to mmWave frequencies. MEMS switches usages some mechanical movement to achieve a closed or open circuit in the Radio Frequency transmission lines. GaAs FET switches do not have sufficient isolations to minimize cross interference and signal jamming from channels is close proximity. MEMS switches provide high isolation ...
  3. Basics of ground fault interrupters

    By Lee Teschler, Exeutive Editor

    Ground-fault circuit interrupters (GFCIs) are sometimes also called earth leakage or residual-current circuit breakers. They can sense leakage current to earth ground and interrupt the circuit automatically when leakage current exceeds a predetermined value.
    Click image for larger version. 

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    A typical way of detecting ground fault currents is through the use of a core-balance protection device. Here hot (sometimes ...
  4. 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. ...
  5. 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, ...
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