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Thread: Ballpark for a startup

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    The SM-220 auxiliary electronic load/analyzer is just a power meter? Because in a quotation they send me they refer to it as "load box" and on it writes "electronic load"?

    The SM-8800ATE (2.01 version) costed US$ 4,394 last time I asked (about 2 months ago).

    Also since the SM-8800ATE already has a Power Meter inside why you need to purchase an additional power meter?

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    The SM-220 is both a power analyzer and an auxiliary 1kW electronic load for the SM-8800 2.01 or 1.01. With the two of them together you could load over 2.5kW.

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    Well, if I do get the money I doubt I'd get the $7k needed for an SM-8800 setup. $4000-$5000 would be more realistic.
    It's my PSU in a box!
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    You could always spring for the SM-8800 version 2.00 - IIRC that's what Paul is using at HardOCP. No way to hook up the SM-220, but has quad 12V loading built into it.

    Or do what I'm doing - SM-268 plus auxiliary 12V electronic loads. This may not be any cheaper in the long run, but you'd have the advantage of being able to buy the auxiliary loaders as needed.

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    It's not comparable to a Sunmoon and I've gone ghetto from the get go with my test set-up but only have about $1300 invested in my entire suite of toys at the moment...$450 of which is aimed solely at getting better efficiency calculations vs. the ~$130 worth of stuff I used for that before. Of course I'm figuring that my time spent building resistive load banks and hotbox is worth nothing.

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    Speaking of hotboxes, I was thinking of using my oven?


    I kid, I kid. But doing a bit of drilling and cutting on an old mid tower case I have, and running a duct from the Sunmoon's exhaust to an intake on the case (and using a couple Delta ~4000RPM fans to help it along), with a couple of exhaust/intake fans on the box to turn on if it starts creeping over 55C, insulation around the outside (Thermos effect), and a few digital probe thermometers... SHOULD about do it, right?

    Also, if using a separate PSU to power fans for the hotbox, it would be a good idea to drop a couple, say, 5k resistors across the +5V and +3.3V to keep the voltage steady, right? Rather than just jumping it with no load except the +12V fans.
    It's my PSU in a box!
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    My PSU in a box, baby!

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    Quote Originally Posted by Phaedrus2129 View Post
    How much did you spend, and on what?
    Closer to 10k.

    We have a SM-8800, a custom ordered Staco 3PN2210B, Extech 380803, custom Brand 20-1850, Tripp-Lite LCR2400, Quincy Labs 10-140, the Stingray, IBM x330, IBM server rack, shelves, Nautilus PSTT-1, Sperry DT-506, etc.

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    Quote Originally Posted by Phaedrus2129 View Post
    Also, if using a separate PSU to power fans for the hotbox, it would be a good idea to drop a couple, say, 5k resistors across the +5V and +3.3V to keep the voltage steady, right? Rather than just jumping it with no load except the +12V fans.
    No need - just go with a good indy regulated unit. And by good, I mean excellent. Something with more than adequate AC transient filtering, well shielded, and above average output quality. I'm using an Antec CP-1000... before it I tried several others that all affected the scope readings coming out of the SM-268.

    The CP-1000 runs all the hot box fans and the fans on the auxiliary loaders.

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    The prova wm-01 I have is exactly the same with Extech 380801 (a 380803 without logging options). It doesn't support logging, but through my program I am able to log all of its output data.

    Mine load tester costed about 1200€ (parts only) and I have the classic stingray, a LabJack U3-HV, with two additional modules installed on it, to measure log all volts&Amps, a Prova WM-01 power analyzer, a chy 502 thermometer, a Canon EOS500D DSLR, a custom made hot box etc.

    Reviewing PSUs is an expensive hobby


    Can someone please explain to me the following: The SM-8800 v. 2.01 has the SM-220 included in its price? And with this its max is 2520W or with the SM-220 goes to 3520W?

    Also the included AC power meter of the SM-8800 is reliable?

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    Quote Originally Posted by crmaris View Post

    Also the included AC power meter of the SM-8800 is reliable?
    It is close, but does not seem to be as good as the extech. The issue for me a lot of the time that prevents its used is the combined power draw makes it totally impossible to use.

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