Google Answers: Powering an ATX motherboard (3.3V and 5V only) from a battery supply

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Q: Powering an ATX motherboard (3.3V and 5V only) from a battery supply ( No Answer, 0 Comments )

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Subject: Powering an ATX motherboard (3.3V and 5V only) from a battery supply
Category: Computers > Hardware
Asked by: robothacker-ga
List Price: $25.00

Posted: 18 Jun 2002 23:23 PDT
Expires: 18 Jun 2002 23:30 PDT
Question ID: 29048

I need to power an ATX motherboard from a battery supply.  I don't
need 12V, but do need 3.3V at <= 10 amps, and 5V at <= 5 amps.  The
battery supply varies from 12V to 21V.  Is there an off-the-shelf
power supply that meets these needs?  It needs to be reasonably
efficient (e.g. inverting to 120V and using a standard ATX supply is
not efficient enough).

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