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This page is about electrical switches. For running races, see Relay race.
Relays

A relay is an electromagnetically operated switch. It was invented in the 19th century to make electric telegraph signals go farther. Nowadays relays control circuits with low-voltages. Many machines use them, including vehicles and electronics. view more...





How to Make a Computer - Part I: Relays and Logic Gates
How to Make a Computer - Part I: Relays and Logic Gates
Looney Tunes | Sports Made Simple: 4x100M Relay | @wbkids
Looney Tunes | Sports Made Simple: 4x100M Relay | @wbkids
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