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Switching Power

February 11th, 2003

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What is the best way to switch power on and off every 12 hours?

I want some sort of relay or something that would switch on and off every twelve hours. It would be best to operate at 24 volts, 12 volts, or 5 volts and must allow power to pass for twelve hours, then turn off twelve hours, over and over, automatically.

If you could work with mains power as the source, eg. to a small PSU, then a plug-in timer would be the simplest solution, either the mechanical with segments, or an electronic one.

If you need it to switch something else, then you could always operate a 12v relay using a small PSU.

It may be possible to find control modules, but in single unit quantity, they would quite likely be more expensive than a retail plug-in timer.

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4 Port USB 30 HUB With Power On Off Switch High Speed Adapter Cable For PC USA
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HP J9148A 2910al 48G PoE + SWITCH with Rackears + Power Cord FREE SHIPPING
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1+8 Port 36Gbps PoE Switch Power IEEE802af 96W 48V for Cameras AP VoIP N9I4
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Toshiba Satellite U500 Series Power Button Switch Board with Cable H000011480
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HP PROCURVE 1500W POE+ POWER SUPPLY J9306A FOR ZL 5400zl SWITCH
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Power one P NSBLP65 1012G Switching Power Supplies 65W 12V 0 5A
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