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Home › Magazines › 2009 › July/August › PC Power Saver

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PC Power Saver

Published in issue 391, July/August 2009

PC Power Saver
This circuit is designed to help minimise the quiescent power consumption of PCs and notebooks, using just our old friend the 555 timer and a relay as the main components. The circuit itself dissipates around 0.5 W in operation (that is, when the connected PC is on); when switched off (with the relay not energised) the total power draw is precisely zero. A prerequisite for the circuit is a PC or notebook with a USB or PS/2 keyboard socket that is powered only when the PC is on.

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Magazine July/August 2009
UK391 (USD 11.30)
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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