This category of AC drives that is often referred to as “Variable Frequency Inverters” is one of the most extensively…
DC to DC power converters also referred to as choppers provide the means to change one DC voltage to another.…
What is the Purpose of Inverters? Whereas dc machines are controlled by varying the voltage and current, ac machines are…
IGBT is a voltage controlled device. It has high input impedance like a MOSFET and low on-state conduction losses like…
Silicon Controlled Rectifiers (SCRs), Triacs and other solid-state devices used for switching larger voltages and currents ON and OFF are…
The Shockey diode is a four layer sandwich of PNPN semiconductor material very similar to the SCR but without a…
Features of a Diac The diac is a two-terminal, semiconductor, bi-directional switching device. It can conduct in both directions. The…
Power electronics deals with the applications of solid state electronics for the control and conversion of electric power. The conversion…
Causes of Power Surges Transient overvoltages in power systems may arise from a number of sources. Power disturbances resulting from…
Switchgear can be defined as equipment used for controlling, regulating and switching ON and OFF power circuits. Switchgear units range…
