Relay
Emergence definition
A relay is a device that uses electromagnetic fields to control or switch electrical connections, often used to automate or extend the operation of a system.
Wiktionary senses
Historical origin
Prerequisite chain
Neighborhood
In other languages
Prerequisites
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A device that uses electromagnetic fields to remotely control or switch electrical circuits, often used to automate or extend the operation of a circuit.
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A relay is an electromagnetic switch that controls circuit functions.