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Old 04-21-2001, 08:02 AM
mbdoc mbdoc is offline
Join Date: Mar 1999
Location: Tucker, Ga USA
Posts: 12,153
Some times we try to go over board & get a bit too technical! A relay's job is to switch power from a remote trigger signal. It's job doesn't change regardless of other devices inside of the relay. ie: Overvoltage relay, it's primary job is to supply power to computers & yes it has protection to keep unwanted power spikes but but still if it doesn't do its main job & keep computer powered-up then nothing else matters. MR Webster defines a relay as an electrical device that responds to a change of current or voltage in one circuit by making OR breaking connection in another. Very good definition. MB has some very complicated relays on their cars, but the purpose of any relay is the SAME. TURNING on power.
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