SCR – Silicon Controlled rectifier

Silicon Controlled Rectifier (SCR) is the first thyristor ever developed (in late 1957). It led to tremendous advancements in power semiconductor devices. They are also known as phase control thyristors.…

Continue Reading SCR – Silicon Controlled rectifier

Transformer cooling methods

Transformers are the most efficient electric machine. A typical transformer is over 99% efficient. The small inefficiency is due to copper losses, core losses-hysteresis and eddy currents losses, stray and…

Continue Reading Transformer cooling methods

IGBT – Insulated Gate Bipolar Transistor

An insulated-gate bipolar transistor (IGBT) is a type of bipolar transistor that has an insulated gate terminal. The structure of the IGBT includes an input MOSFET which consists of the…

Continue Reading IGBT – Insulated Gate Bipolar Transistor

Common emitter configuration of BJT

The common emitter circuit is probably the most widely used transistor configuration. The emitter electrode is common to both input and output circuits. The common emitter amplifier has a typical…

Continue Reading Common emitter configuration of BJT

Difference between BJT and MOSFET

BJT and MOSFET are two types of semiconductor transistors. Even though both of them are transistors, they are different from each other in various aspects. By the end of this…

Continue Reading Difference between BJT and MOSFET

Types of Transformer windings

Transformer windings constitute the electrical circuit of a transformer. They are made up of current-carrying conductors wound around the core. The primary windings form the input to the transformer and…

Continue Reading Types of Transformer windings

Insulation materials used in transformers

Insulation materials are one of the most important elements in a transformer. They are used to electrically separate the conducting parts of a transformer from each other and from other…

Continue Reading Insulation materials used in transformers

BJT – Bipolar Junction Transistors

Image credit: Michael Frey A Bipolar junction transistor, commonly known as BJT, is a Si or Ge semiconductor device that is structured like two p-n junction diodes connected back to…

Continue Reading BJT – Bipolar Junction Transistors