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Thread: Opus dc-dc and inverter...

  1. #1
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    Opus dc-dc and inverter...

    Hi, I have a DELL optiplex 240gx with a 2GHz p4. The pc has a min mobo and comes with a 160w output psu. The opus ps is rated @150w. will this be a problem? i doubt that all the voltage is used by the psu in the pc as it is.

    final question, i will need to power my 15" lcd, and plan on using an inverter for that. besides the lack of convenient auto turn off, will there be any other drawbacks to using an inverter for the display?


    so all i need is the inverter and opus p/s to power the pc and display as if i were at home? i have read about building my own psu, but too much trouble if i can get everything for under $300. the opus is costly (about $200 ?), but inverter is cheap.

    Any answers are appreciated.


    BTW, to make sure the psu in my pc is replaceable by the opus, i took a pic of the pc psu label: http://web.tampabay.rr.com/sweetrobot/

    just lcick on the power rating.jpg file

  2. #2
    FLAC
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    Easy solution: use an inverter. Dell uses some odd power supplies that don't use a standard ATX pinout and have some extra AT style power connectors on them.

  3. #3
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    Quote Originally Posted by bgoodman
    Easy solution: use an inverter. Dell uses some odd power supplies that don't use a standard ATX pinout and have some extra AT style power connectors on them.
    do u mean that the opus p/s will be useless in my pc? the whole point is to replace it with the opus, so it shouldn't matter what the dell psu is, right? and if i were to simply get an inverter, should i get a 700w one- cause the psu inputs up to 600w, thouhg output is only 160w- very inefficient. and the lcd, 15" will be no more than 100W. i am just guessing.

  4. #4
    Raw Wave Confused's Avatar
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    No, if the Dell PSU is non-standard, so will the motherboard.

    You will need at most a 200W (sustained) invertor for the Dell, and then another 100W for the LCD. That means you should be able to get away with a 350-500W (sustained) invertor.

    The 700W might be "burst", but 350W sustained. I have a 300W one which is only 150W sustained.


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  5. #5
    Maximum Bitrate PTCruiser's Avatar
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    alway wondering why a PIV in a car....

    Not really usefull for GPS/Divx/Mp3...so for what? Your alternator?
    Epia M9000, lili 7" vga&touch & 2xTM-7002S compo, camera with reversed image, 2.5" 60 GB, 256Mb DDR, Opus 90W, GPS usb... AND MEDIACRUISER of course!

  6. #6
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    Quote Originally Posted by PTCruiser
    alway wondering why a PIV in a car....

    Not really usefull for GPS/Divx/Mp3...so for what? Your alternator?

    I assume PIV is an inverter?

  7. #7
    Maximum Bitrate carabuser's Avatar
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    don't know if it's gonna fit your mobo, but as for power output, your psu outputs 160W, Opus is 150W, so what's the problem here? go here, calculate you power, see if you really need a psu that big:
    http://www.mymp3car.com/MP3Car/PSUpower.asp

  8. #8
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    Quote Originally Posted by carabuser
    don't know if it's gonna fit your mobo, but as for power output, your psu outputs 160W, Opus is 150W, so what's the problem here? go here, calculate you power, see if you really need a psu that big:
    http://www.mymp3car.com/MP3Car/PSUpower.asp
    Before going on this generic quotations... check your PSU needs based on 3.3v, 5v, 12v rail and how much the PSU can give. Now compare that to OPUS. See if they resemble. P4 uses 12V for CPU while 3.3v and 5v for MOBO... I noticed OPUS will be able to barely handle most P4 CPU without consideration for HDD or DVD/CD activity (under full CPU load). Kind of risky if you asked me as you will most likely operate opus PSU beyond its rated spec.

  9. #9
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    Quote Originally Posted by jinu117
    Before going on this generic quotations... check your PSU needs based on 3.3v, 5v, 12v rail and how much the PSU can give. Now compare that to OPUS. See if they resemble. P4 uses 12V for CPU while 3.3v and 5v for MOBO... I noticed OPUS will be able to barely handle most P4 CPU without consideration for HDD or DVD/CD activity (under full CPU load). Kind of risky if you asked me as you will most likely operate opus PSU beyond its rated spec.
    What are the bad sides of using a modified sine wave inverter- any pure sine wave inverters with the ratings i need are well over $1k!

    I have taken a picture of my psu's ratings label: can anyone look at it and tell me if its compatible with opus'- i checked, and there are no odd power connections- they are exact same as opus'. so only worry is power ratings. http://web.tampabay.rr.com/sweetrobot/ the picture name is "power rating"

    thanks

  10. #10
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    sweetrobot2k;

    An Opus 150W PSU will be more than enough to power your system. I run a P4 2.4, 512DDR, 7200RPM HD, Radeon Graphics, Audigy 2, DVD ROM, and 5 usb devices including a hub daily. I also hook up an older 5400 HD, other USB Devices, and PCI Cards to play with on occasion. It seems to handle it just fine even when playing GTA Vice City. My system has been installed for 5 months.

    But, you will need to post a few shots of the connectors / wires used. Dell may use proprietary connectors, in which case the connector/wires may need to be modded. Chances are they still meet ATX spec so it should be a simple cut splice job. Your first contact should be Kris at Opus. If someone used it on a Dell system, he'll know or know how to get it working. But we can probably help you out if he's not sure or doesn't have a dell compatible cable for you.

    An inverter will also work. But some people run into line noise problems. Plus, more elaborate, tank circuit, startup/shutdown controllers are needed. The Opus incorporates the tank ckt, startup/shutdown controllers, low battery cutoff, and typically has no problems with noise all in a tiny SFX package. A dc-dc is also more efficient, allowing you to run your system for quite some time with the car off and generating very little heat. ATM, its the only complete plug and play solution for carpc psus.

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