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Thread: opus vs inverter

  1. #11
    MySQL Error MatrixPC's Avatar
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    Either DC-DC or DC-AC-DC (Inverter) all has advantage over other.
    Inverter: cheap and widely available.
    DC-DC: Expensive and not widely available

    If you just want to put it together to see how computer work in car environment, inverter is a way to go. If you don't like the idea of computer in car, dump all together and doesn't cost that much. But if you like it, you should consider DC-DC in the long run.

    As for DC-DC there are couple options: buy it and use or DIY.
    If you are DYI, Sproggy is very darn good. Work well in extreme cold environment (some members complain OPUS doesn't work well in cold). This is a chance for you to learn more about electronic stuff (as I do over the pass couple months).
    If you just buy it and use, Opus is clearly a winner over other commercial PSU because it has build in shutdown controller and other stuff. I don't have one yet but will get one for my 2nd car install unless the new Sproggy have enough juice for my requirement.

    Well READ the Faq on power supply to see the good, the bad, and the ugly about power in automobile environment.

    I am currently using inverter and it work darn well too. It is my test out how computer work in car. I will switch to Sproggy when I get all the part together. Dammm I just burn my Maxs chips.
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  2. #12
    Variable Bitrate M^ck^y's Avatar
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    I use the exact same inverter!!!

    Quote Originally Posted by coma
    the only reason the opus has less noise is because of its low power output, which brings me to another point. the Opus is weak as. 150w isnt much...
    basicly i want to know if its going to be worth that extra money

    i would like to know what systems people are using with the Opus
    Cards, drives, peripherals etc.
    You gotta be in Australia right? I got the exact same inverter from dicksmith elec a week ago and I was very happy with it. I use it hooked up to a second battey in the boot, connected in parallel with the main battery and an ITPS as startup/shutdown controller, with bypassed the regulation. My computer now survives cranks for the first time and I was getting very excited. I set the power management to laptop/portable computer and it did an excellent job. Last night however I had no computer in the car,weird enough, and this morning i couldn't even start the car!!! drained batteries... I always left the inverter running 24hrs and it was probably pushing the batteries too much(not too sure about this).

    A guy told me at work that even the voltage does NOT go below 10 v (inverter shuts down/protection -10V) it still draws a lot of current and not leaving enough power to star the car engine..

    A quick solution is to install a remote switch from the inverter built in switch to the dash.

    Apart from that, after having the switch, i'll be able to run a lot more devices that the opus very easily. I would recommend the inverter over the opus. Noise can't be an issue when you have a noisy car and a sub woofer anyways.

  3. #13
    Variable Bitrate
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    Not to bash Opus, but it isn't the solve-all for everyone. I won't have one. It doesn't have the power I need, doesn't have the options I want.

    I use an inverter an my own power controller. I do not have any noise from the inverter, do not have any grounding issues, or any other problems at all. I have much more flexibility than any Opus user. I have a faster PC than most with an Opus, and it doesn't lock up from lack of power like those running too much off an Opus.

    I don't have any trouble surviving crank either, and I spent much less than someone using an Opus!

    Just providing a different standpoint.

    KyferEz
    TheCarPCStore.com - Power Controllers (SDC), Inverters, Tank Circuit, GPS, OBDII, CarPCs, and more!
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  4. #14
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    ^^^thats good to hear. ive got a 325 watt inverter that i plan on using to power my 7" lilliput touchscreen and 2.4ghz shuttle xpc. ive been very concerned about noise issues, cant wait to try it out!

  5. #15
    Maximum Bitrate shizzle's Avatar
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    CNX-p1900!!! Coming soon!
    I am using an inverter with no real complaints... untill this comes out.
    140W! sweet...
    http://www.carnetix.com/CNXP1900.htm
    Carputer status: [-*---------]
    Im thinking laptop...

  6. #16
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    im going inverter simply because the opus isnt powerful enough for my application. a64's just use too much joice.

  7. #17
    Variable Bitrate lastberserker's Avatar
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    Quote Originally Posted by shizzle
    CNX-p1900!!! Coming soon!
    But will it work with non-MicroITX boards or with Mac Mini - that's the question bugging me
    Asus K8S-MX ~ Athlon 64 2800+ ~ Kingmax MPXD42D-2K 1Gb ~ Seagate ST960822A 60Gb ~ PSK-3100 PS/2 kbd ~ MR-350 GPS ~ Hawking HSB1AP ~ Buffalo WLI-USB-G54 ~ 8" Dynamix TS LCD ~ DSATX ~ XCard ~ TVedia ~ some LCD TV ~ Vista ~ MapPoint 2006 ~ iGuidance 2.*

  8. #18
    Self proclaimed spoon feeder TruckinMP3's Avatar
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    Quote Originally Posted by KyferEz
    Not to bash Opus, but it isn't the solve-all for everyone. I won't have one. It doesn't have the power I need, doesn't have the options I want.

    I use an inverter an my own power controller. I do not have any noise from the inverter, do not have any grounding issues, or any other problems at all. I have much more flexibility than any Opus user. I have a faster PC than most with an Opus, and it doesn't lock up from lack of power like those running too much off an Opus.

    I don't have any trouble surviving crank either, and I spent much less than someone using an Opus!

    Just providing a different standpoint.

    KyferEz
    Sure, I use a PC power and cooling unit. But the OPUS is available from more than the shop that makes them.
    TruckinMP3
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  9. #19
    Maximum Bitrate KyleYankan's Avatar
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    I went inverter for two reasons:
    price
    usability.

    A 400w inverter was incredibly cheap on ebay, and it barely makes any noise for me. In fact I have to run my fingers over the grill to see if the fan is on. Also, I figured if I'm spending the money, I want something that's going to be useable to more than one application. My inverter is set up to charge my laptop bettery between school and home, plus I've used it once to run my video camera in the car - cause it batteries suck.

    I've never had experience with DC-DC, and I'm still new, but if you're not dead-hardcore-serious about a carputer, like if you jusy enjoy the idea, then go inverter. Of course, your DC-DC has better effeciency, but you really don't need it that much. 90% efficiency is pretty good. Make your own shutdown controller. That's what I'm in middle of doing. Just waiting for some relays. It's not too hard.


    Also, I wanted something that could be pulled out of the car and used for something else, if a carputer never really worked out well, or was damaged. If I buy a DC-DC psu, this is basically useless except in carpc applications.

  10. #20
    Constant Bitrate goosey2099's Avatar
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    **** inverter!! OPUS is the only way to go!

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