Investing in the power supply (80 USD) I got will address most of your
concerns. Here are the advantages:
*Intelligent Automotive / Car DC-DC ATX PC Power Supply*
The *M2-ATX *is a smart, high power, vehicle (car/boat/electric cart)
12V DC-DC ATX PC power supply designed for CarPCs and battery (both 12V
and 24V) powered applications.
*Versatile*
Designed to provide power and to control the ON/OFF switch of a
motherboard (CarPC) based on ignition status, the *M2-ATX *is a wide
input (6V to 24V) vehicle/car/battery operated ATX power supply capable
of surviving tough car engine cranks (down to 6V) as well as transient
over-voltage situations. Just connect it to and power up your PC!
*Accessories*
The* M2-ATX *comes equipped with ATX/HDD/SATA cable harness, jumpers,
faston connectors and 2 pin cables for motherboard ON/OFF switch. A*
P4-P4 (P4-12V to P4-12V)* *cable* is usually required for P4 systems and
is available separately (please see the related items section)
*Smart Power Management*
Even if your computer is turned OFF, a PC will still consume a few
hundered milliwatts, which is needed to monitor PC ON/OFF status. When a
computer is in the suspend/sleep mode, it will consume even more power,
because the RAM needs to be powered at all times. The power consumption
in the suspend mode is few watts. No matter how big your car battery is,
it will eventually drain your car battery in a matter of days.
The *M2-ATX *has 8 user selectable microcontroller driven timing modes,
allowing you to choose up to 8 ignition/shutdown CarPC timing schemes
via a built-in shutdown controller. By removing all user-selectable
jumpers, the *M2-ATX *becomes a traditional PC PSU with no ignition
control (shutdown controller bypassed) and it can be used in non-vehicle
computer applications.
*No More Dead Batteries*
While in deep sleep mode, the *M2-ATX* constantly monitors your car
battery voltage levels, preventing deep discharge situations by
automatically shutting down (using a built-in shutdown controller) until
battery levels reach safe levels again.
*Value*
* No more dead car batteries
* No more computer resets during engine cranks
* Multiple timing schemes
* Small form factor
* Very competitive price
The *M2-ATX* the premier solution for DC-DC ATX vehicle/CarPC power
supply solutions.
*NOTE: *The *M2-ATX* provides up to 8A on the 12V rail, making it ideal
for operating most Core 2 Duo, P4, P4-M, Celeron, ADM systems. Low power
Geode and VIA processors (C3, C7) will work as well, leaving ample power
for 12V or 5V peripherals (multiple 3.5" hard drives, CDROM, etc).
**
Drexx Laggui [personal] wrote:
Anybody put in a UPS? I hate the line-interactives, they're crap. Must
go online UPS the next time I can afford one. Probably 3kVA or so.
UPS I think is a must-have because every time you refuel at a gas
station, you'd have to turn off then later re-start the engine...
which of course power cycles everything: the printer, WLAN AP, and the
Globe Internet thing too. Only laptops stays on.
Worse thing is, as the car battery gets more and more drained, my
DC-to-AC converter starts giving out square-waves. Yeah, I know, it's
about 6 years old already, but square-waves can't be good for
computers.
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