Description
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
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