Description

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INTRODUCTION

A relay is an electrically operated switch. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits as amplifiers: they repeated the signal coming in from one circuit and re- transmitted it on another circuit. Relays were used extensively in telephone exchanges and early computers to perform logical operations.

Mach Relays Seminar Report

Page Length : 31

Content :

• Introduction
• History
• Basic design and operation
• Types
• Pole and throw
• Applications
• Relay application considerations
• Protective relays
• Reference

Mach Relays Presentation Report (PPT)

Page Length : 24

Content :

• Introduction
• Electromagnetic Induction Principle
• Electromagnetic Attraction Type Relay
• Electromagnetic Induction
• Relay operation based on Load
• Typical 5 Pin Relay Pin Identification
• Types of Relay switching contacts
• Switch ratings (voltage and current)
• Advantage & Disadvantage
• Application
• References