Relay
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A relay is an electrically operated switch. Many relays use an electromagnet to operate a switching mechanism mechanically, but other operating principles are also used. Relays are used where it is necessary to control a circuit by a low-power signal (with complete electrical isolation between control and controlled circuits), or where several circuits must be controlled by one signal. The first relays were used in long distance telegraph circuits, repeating the signal coming in from one circuit and re-transmitting it to another. Relays were used extensively in telephone exchanges and early computers to perform logical operations.
- Related: Contactor, Digital protective relay, Dry contact, Race condition, Stepping switch, Wire spring relay
| Information about relays and the Latching Relay ci... Information about relays and the Latching Relay circuit www.eleinmec.com/article.asp?24 - Web |
| "Harry Porter's Relay Computer", a computer made o... "Harry Porter's Relay Computer", a computer made out of relays. web.cecs.pdx.edu/~harry/Relay/index.html - Web |
| "Relay Computer Two", by Jon Stanley. "Relay Computer Two", by Jon Stanley. www.electronixandmore.com/project/relaycomputertwo/index.html - Web |
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| Interfacing Relay To Microcontroller. Interfacing Relay To Microcontroller. www.dnatechindia.com/.../Interfacing-Relay-to-Microcontroller.html - Web |
| A Relay General Application Guidelines A Relay General Application Guidelines www.tai-shing.com.tw/technical/relay.htm - Web |
