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Home › Magazines › 2006 › March › Energy saver for relays

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Energy saver for relays

Design Tip

Published in issue 352, March 2006

When dealing with relays we distinguish between the pull-in voltage and the hold voltage. Depending on the type of device, the latter is from about 10 % to 50 % lower than the former. This means that once we have safely pulled in the relay armature we can drop the coil voltage to its hold value, thus reducing the power dissipated. The simple circuit shown here does just that.

Click below to download a PDF copy of this article from Elektor magazine.

 

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PDF Article (U060373.pdf)
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Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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