Power Electronics Objective Questions 1. Questions & Answers on Diodes The P-N Junction Power Diode – Part 1 Power Diode – Part 2 Types of Power Diodes – Part 1...
Crowbar circuit is used to protect circuit or equipment under fault condition Over Current Causes: Over current flow through thyristors in a circuit due to: Flow of short circuit current...
Firing Circuits: Gate triggering is the most commonly used turn-on method employed to switch on the thyristors. Triggering circuits is also called firing circuits. There are various firing circuits available....
This post will discuss about testing SCR – Silicon Controlled Rectifier with thte help of Ohmmeter. The thyristor pin assignment diagram of TO-220 package is given for ready reference. Identify the...
The Snubber circuit is one type of dv/dt protection circuit of the thyristor. With the help of snubber circuit, the false turn-on of a thyristor due to large dv/dt can be...
How to test TRIAC with Digital Multimeter OR using Ohmmeter? In this short post we will discuss about how to test the Triac. Introduction about Triac: TRIAC = TRIode for Alternating...
Insulated Gate Bipolar Junction Transistor (IGBTs) are normally classified into two types. They are namely (i) Non Punch Through IGBT [NPT-IGBT] (ii) Punch Through [PT-IGBT]. These IGBTs are also referred...
Thyristor is a three terminal device with four layers of alternating P and N type material (three P-N junctions). The three terminals are Anode, Cathode and Gate. The Thyristor is...
SCR Switching Characteristics or Dynamic Characteristics: The switching characteristics are important particularly at high-frequency, to define the device velocity in changing from conduction state to blocking state and vice versa....
Triggering (Turn on) Methods of Thyristor: Triggering:- The turning on Process of the SCR is known as Triggering. In other words, turning the SCR from Forward-Blocking state to Forward-Conduction state...
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