Difference between revisions of "Relays"
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(New page: == Relays == A relay is a electromechanical device that can be used to switch eg. a high voltage/current with a low voltage/current. It consists of a coil and the switching part. When cur...) |
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Revision as of 04:09, 13 November 2008
Relays
A relay is a electromechanical device that can be used to switch eg. a high voltage/current with a low voltage/current.
It consists of a coil and the switching part. When current flows through the coil, the magnetic field produced can move the switching contact, eg from off to on, or vice versa.
They come in many colors, sizes, types and ratings.
Useful to turn on/off a load, even 115VAC/230VAC.