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Thread: why dont people use "home" screens with inverters?

  1. #1
    Variable Bitrate
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    why dont people use "home" screens with inverters?

    hey. in my recent install, i was trying to find a good screen for my car pc. i wanted something around 10 inches, but all i could find was lilcrap and stuf like that, wich are very expensive and WAY not , all good for what you need on the car.. (personal opinion, not applying to all screens ofc )
    at the end, i dicided that i would go for a 15 inch home screen, with an dc to ac inverter , to run it. if you need touch as well, a touch panel is easy to be found.

    so i'v been using it for the past two months, and its awsome. ultra bright, HD , bla bla.
    and i was wandering, why not many people do it that way? at best someone would go with a laptop screen, but seems way to hard... so i wanted to see if some one had a reason why not, to do it

  2. #2
    FLAC SNOtwistR's Avatar
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    Mostly because of having to use an inverter, I would suspect. SNO

  3. #3
    Constant Bitrate
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    I use a 12 volt 15" LED I found on Amazon.

    Not for use when driving.

  4. #4
    Variable Bitrate
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    well yea, that was my first though as well. ( i also didint wont to.) but , with a relay to turn it on automatic, it dosent seem like a big deal (Although i do, dont know about noise issues)

  5. #5
    Constant Bitrate
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    Check out this company:

    http://www.chasecam.com

  6. #6
    Raw Wave
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    Noise should not be an issue. Both dc-dc converters and dc-ac inverters use high-frequency switching (dc-ac or dc-ac-dc). In fact some d-dc converters are known to be far noisier than inverters.

    The main reason inverters are not used is their inefficiency - typically 20% higher than dc-dc converters.
    Plus often higher idling/stand-by currents and worse tolerance to low voltages during cranking etc).

    Many dc-dc converters also have a means for low-current idling whereas inverters don't - they are either on and idling, else off.

  7. #7
    Neither darque nor pervert DarquePervert's Avatar
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    Quote Originally Posted by settra View Post
    hey. in my recent install, i was trying to find a good screen for my car pc. i wanted something around 10 inches, but all i could find was lilcrap and stuf like that, wich are very expensive and WAY not , all good for what you need on the car.. (personal opinion, not applying to all screens ofc )
    at the end, i dicided that i would go for a 15 inch home screen, with an dc to ac inverter , to run it. if you need touch as well, a touch panel is easy to be found.

    so i'v been using it for the past two months, and its awsome. ultra bright, HD , bla bla.
    and i was wandering, why not many people do it that way? at best someone would go with a laptop screen, but seems way to hard... so i wanted to see if some one had a reason why not, to do it
    Two reasons:
    1. To avoid using an inverter. They are bulky & inefficient. Low-quality inverters are also more likely to introduce EMI interference (aka "noise") into your audio system.
    2. Most home/office monitors aren't as bright. They don't have to be, as they have to be read indoors, not in direct sunlight.
    Have you looked in the FAQ yet?
    How about the Wiki?



    Under normal circumstances, a signature would go here.

  8. #8
    Variable Bitrate
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    Quote Originally Posted by DarquePervert View Post
    Two reasons:
    1. To avoid using an inverter. They are bulky & inefficient. Low-quality inverters are also more likely to introduce EMI interference (aka "noise") into your audio system.
    2. Most home/office monitors aren't as bright. They don't have to be, as they have to be read indoors, not in direct sunlight.
    for the first, i cant really disagree cause i dont know (althoug, inefficient, in like 20watt that a screen uses, is nothing)
    but on the second, you are completly wrong. home monitors, as long as they are gloss and not matt, are ultra bright. "lumens" are not everything when it comes to SEE the screen. car monitors have at best 250 contrast, when hoem screens have from 50.000 to ++++ making them very easy to be read. In my case, even with the sun reflecting on the screen, i can see very easy!!

  9. #9
    Raw Wave
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    Brightness is not the same as contrast, but if you reckon home monitors work fine in sunlight etc...

    But efficiency has little to do with the load, though best efficiencies are usually at ~80-85% of rated output - especially for inverters.
    But inverters often have a high no-load draw - eg, 10W for a 100W or 150W inverter plus the "copper" inefficiencies (those related to the load).
    I doubt you'd get less than 30% inefficiency for an inverter at 20W (and whatever draw when in stand-by = idling, eg, 10W, or 5W or 20W?) whereas a dc-dc converter is likely to still be under 10% inefficient and have negligible draw when idling.

  10. #10
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    Quote Originally Posted by OldSpark View Post
    Brightness is not the same as contrast, but if you reckon home monitors work fine in sunlight etc...
    contrast is no the same as brightness, yes, thats why i sed "when you try to see the screen". cause in two screens with same brightness, when you try to see text on the screen, with low contrast, the text is ruined by sun, but with great contrast, its still see-able . dont take it as "They are brigheter", take it as "they are more sun-readable" !!

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