posted by [identity profile] phoenixvtam.livejournal.com at 04:30am on 2008-03-04
What you've described is a "keep" relay, also known as a "take" relay or a "latch" relay. It's a bistable relay in which energizing the coil will flip the relay, but de-energizing the coil does nothing; energize the coil again, though, and the relay flips the other way.

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