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Supply a computer monitor with 220V DC? Answered

Hello, i am unable to find answers to this anywhere so I hope you can help me!
Is it possible to supply a "normal" computer monitor with 220V DC instead of AC?
All the specifications list the input only as AC, but I would think the monitor have an internal power supply which converts 220V AC to 6-48V DC which uses a diode bridge and my basic electric knowledge tells me this bridge will work if supplied with DC as well.
Would this work? Does actual "220V DC monitors" exist? I cant seem to find any..

Discussions

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steveastrouk

Best Answer 3 years ago

Yes, it should work, but no guarantees.

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seandogue

3 years ago

Yes, virtually anything is possible if one throws enough money at it

No, not practically speaking. You will blow out the components behind that recitfier, since it's being supplied by a transformer that steps the 220VAC down to a usable voltage ***prior*** to inpout to the recitfier.

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jclausen1seandogue

Answer 3 years ago

Well i tried it yesterday and it worked like a charm. I had the monitor on for an hour only, so i will have to do further testing to make sure it wont fry anything

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bwrussell

3 years ago

Possible or not, my question is why?

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jclausen1bwrussell

Answer 3 years ago

For high voltage substation control we use a "local SCADA system" running on a special PC (with redundant DC supply) and a monitor. In case of blackout we have a huge ass 220V DC battery for backup for several devices and untill now also a DC/AC converter.
We are investigating if we spare this DC/AC converter as its pretty expensive

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-max-

3 years ago

There should be a label or something with power specs on the back of the monitor, probably near the power cable. See what it says. If it says something like 110V-220V AC in, x.xxA, then it should work.