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Sherlock Ohms

Billboard Causes Computer Crash

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Rigby5
User Rank
Platinum
Re: Waste of energy
Rigby5   3/8/2013 11:26:35 AM
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The reason the computers rebooted is that when you first turn on anything with a large capacity or has low resistance until it heats up, temporarily there is such a drop in voltage that it is equivalent to a power cycle.

BRedmond
User Rank
Silver
Re: Waste of energy
BRedmond   3/8/2013 11:55:58 AM
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Billboard lighting across the street should not be causing a voltage dip on the computer power circuit in the office sufficient to reboot the computer.  Sounds like a utility issue.  If it was a 200HP motor...

Rigby5
User Rank
Platinum
Spotlight draw
Rigby5   3/8/2013 12:16:48 PM
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The thing you have to remember is that a billboard will be using lamps more like in a theater than what you would be used to inside a building.  They could have a large ballast to fill or many filiments to heat up.  Remember a filiment has very little resistance until it gets hot.  Electric motors use statges or capatitors to limit starting drop, but lamps may not.  I agree the utility is probably cutting corners, but that is a constant problem and pretty much a fact of life.

Cadman-LT
User Rank
Platinum
Re: Waste of energy
Cadman-LT   3/9/2013 12:43:36 PM
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Rigby5, I agree. Boot-up draws way more power than regular power.

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