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Thread: Power Supply for EYE MAGIC EMS 4000

  1. #1
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    Default Power Supply for EYE MAGIC EMS 4000

    Anybody have a spare power supply ?
    Now sure whats required , and wether its a power supply for each galvo/amp or one supply for both

    but if you have supply available and prepared to part with it please let me know

    paul
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  2. #2
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    OK managed to source a new power supply but its $150 ! + shipping of between $30 to $120 depending on service + import charges and import management fee ...Ooopsss

    Heres what the manual says i required .... which i dont fully understand so if anyone can point me to a relevent power supply in UK it would be appreciated

    " +/-0v to +/-30V DCvia 4 pin labled powe, Red is positie , green is ground, black is negative. Typically a 2 x 18v , 100w transformer , recified and filtered with 6800uf/35V capacitors in each rail is sufficient for a pair of scanner. Stabalized and switching power supplys can also be used.if you use switching PS , make sure it can deliver at least 50W in each rail to ensure reliable operation. "

    Any help appreciated

    Paul

    PS ..power supplies for dummies spoon feeding links appreciated
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  3. #3
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    I don't understand either Paul.

    Can you type exactly what it says in the manual re the voltage.

    Will also need to know the approximate current draw from the scanners?
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  4. #4
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    I would buy 2 24v power supplies from HK.

    http://cgi.ebay.com/Universal-24V-2A...item27b56969d6

    Like this one 48watts.

    I can't wouch for this seller as it's just an example but all my scanners, lasers and other electronics projects are powered from cheap hong kong psu's like this one.

  5. #5
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    manual attached ..this is all info i have.


    Click image for larger version. 

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  6. #6
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    Hi Lasermad,
    I've got the same scanners to but haven't got to the stage of firing them up yet. Have a chat to dsli_jon and also Dave. They both have used them extensively.

    Also I think I remember Dave saying you need to add a diode somewhere if you use switch mode supplies with them.

    Let me know how you go.

    Good luck
    Kit

  7. #7
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    A -24v, 0, +24v 100watt swich mode psu, or 2x 24v 50watt with isolated secondaries will far exceed the requirements described in the manual.

    Adding a diode will only drop the voltage with 0.6volts and cripple the psu's ability to compensate for backsourges (that will never happen with the ema-1900 or ema-1200 drivers usually found with the ems-4000's anyway)
    Last edited by Tormod; 10-06-2010 at 11:52.

  8. #8
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    thanks tormod , the ebay link is great price i shll order some o those up for diferent projects

    for this EMS 4000 issue ...does this look as though it might be a solution , its local tome and varibale voltage
    http://www.tait-components.com/Power...0w-101082.html

    any input appreciated

    paul
    In the beginning there was none. Then came the light - #1 UKLEM - 2007
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  9. #9
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    Just use 2 24v switchmode supplies in series.
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  10. #10
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    Quote Originally Posted by Tormod View Post
    Adding a diode will only drop the voltage with 0.6volts and cripple the psu's ability to compensate for backsourges (that will never happen with the ema-1900 or ema-1200 drivers usually found with the ems-4000's anyway)
    The diode is needed to stop the positive regulator on the ems board locking up if the negative rail rises first - As what can happen if 2 separate switchmodes are used.. Easy fix tho.
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