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Thread: How to get 120VAC?

  1. #1
    Newbie bdqpdx2000's Avatar
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    How to get 120VAC?

    I have an IBM NetVista desktop as my carputer (65W power supply). In order to not encounter any problems with crank power loss, I planned to have it hooked up to a small APC UPS. Now, the UPS won't switch off of its battery backup unless it's getting around 115VAC. I've tried a few power inverters rated at 150W+ 110VAC that only output between 83VAC and 95VAC (Manual says 90% max efficiency). Because of this, I either have to shutdown/hibernate the computer every time I shut off the car and only power on the carputer once I already have it started.

    So my question... how can I get around 110VAC in the car, or would an Opus power supply be appropriate for this application?

    Thanks,
    Dan

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    Newbie bdqpdx2000's Avatar
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    42 views, no comments? Any help would be appreciated...

  3. #3
    Constant Bitrate
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    I have an opus and it works great and survives crank. I think a couple people have inverters that can survive crank but I dunno which one. Do a search on surviving crank is all I can tell you.
    Kefka_Killer.owns(you);

  4. #4
    Constant Bitrate
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    my inverter survives crank...my car falls to 10.8 volts on crank and my inverter shuts off at 10.5. (APC 350 watt...it does sound an annoying alarm I can hear from my trunk) I couldn't get a UPS to work either then I realized I was a dumbass and searched the forums and found several threads about UPS's not working off of an inverter...the wiring fault light goes on on the UPS.
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  5. #5
    Newbie bdqpdx2000's Avatar
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    gah... I was told by an engineer at work that a higher-rated inverter will be more likely to put out a more useful amount of voltage, so I guess I'll try that.

    By the way if you don't like the buzzer just take it out. I cracked open my APC UPS, tracked down the beeping sound (the buzzer looks nothing like a standard piezo buzzer) and desoldered it. The unit still works, and now without that annoying beep.

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