# Superposition theorem

Superposition theorem can be used to find the current or voltage in any circuit containing more than one independent sources. By using this method, we calculate the contribution of each…

# Current Division rule

As we know, in a parallel circuit current divides into all branches. The current flow through each branch is inversely proportional to the resistance offered by each one them. The…

# Norton’s Theorem

Norton’s theorem is used to simplify complex linear circuits and making circuit analysis easy and fast. This theorem was proposed by E. L. Norton, an American engineer at Bell Laboratories.…

# Thevenin’s Theorem -explanation, equivalent circuit & examples

Circuits can contain many power sources and power dissipation elements. It is common that any one of the elements in the circuit is a variable while all others are fixed.…

Continue Reading Thevenin’s Theorem -explanation, equivalent circuit & examples

# Electromechanical relays vs solid-state relays

Relays are electrically operated switching devices, used to gain control over processes and circuits. Based on their principle of operation they are classified into two types: Solid-state relays and electromechanical…

Continue Reading Electromechanical relays vs solid-state relays

# Difference between earth leakage relay and earth fault relay

Earth fault is an undesirable condition at which current flow from a conductor to earth. This can happen when a current-carrying conductor falls on the ground or the body of…

Continue Reading Difference between earth leakage relay and earth fault relay

# What is an arc chute?

When a circuit breaker interrupts high currents, an electric arc is generated. An electric arc is the discharge of electric current through gas or air. The conduction of electric charges…

Continue Reading What is an arc chute?

# Relay – Operation, types and applications

A relay is an electrically controlled switching device. It consists of an electromagnet and a set of contacts that open or close when voltage is applied to the electromagnet. It…

Continue Reading Relay – Operation, types and applications

# High Leg delta connection

Power is transmitted over long distances at high voltage. In order to supply domestic and residential applications, it needs to be stepped down to 120V or 230V single phase. This…

Continue Reading High Leg delta connection

# Electrical wiring colour codes – Important

Electrical engineers and electricians follow predefined wiring colour codes while wiring houses, commercial buildings and industrial panel boards. The electrical wiring colour codes followed is slightly different in every part…

Continue Reading Electrical wiring colour codes – Important