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DC Chopper

DC Chopper: DC Chopper are mainly dc to dc single stage conversion devices which provide a variable voltage on the load side when fed from a constant dc voltage source.…

Six pulse bridge converter

Six pulse bridge converter: The conduction time of a thyristor in a six pulse connection can be increased when the converter is obtained by a series or parallel connection of…

Methods of Circuit Analysis

Methods of Circuit Analysis: A division of mathematics called topology or graph theory deals with graphs of networks and provides information that helps in the formulation of network equations. In…

Polarised Relay

Polarised Relay: This Polarised Relay is very frequently employed where operation is required in two directions. In a d.c. Polarised Relay contact A is closed when current in the operating…

Time Delay Circuit

Time Delay Circuit: Several choices are available in the selection of suitable circuits for obtaining Time Delay Circuit depending on the magnitude of the time delay required. Delays of the…

Level Detector

Level Detector: Schmitt trigger or level detector circuits are very often employed in static relay circuits as a final stage before the trip coil circuit of the circuit breaker. The…

Different Types of Relays Elements

Different Types of Relays Elements: The Important Different Types of Relays Elements or also called Electromagnetic Types are Induction Disc Relay Induction-cup Relays Moving Coil Relays Hinged Armature Relays Polarized…

Influence of Static Protective Relays

Influence of Static Protective Relays: Influence of Static Protective Relays on the associated equipment like current transformers, voltage transformers, etc,. Let us discuss one by one. Current Transformers: Burdens on…