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Thread: CNI (Small) OEM Driver Pot's Help

  1. #1
    Join Date
    Dec 2007
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    Denmark
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    Default CNI (Small) OEM Driver Pot's Help

    Hi.

    Do some one have a overview there shows the Pot functions on this smaller OEM version driver. The laser head is a CNI H-Head 1 watt type.
    Can see this driver the alot of test points on the PCB. If anyone have infomation around this points it would be cool

    Thanks
    Poul.

    Click image for larger version. 

Name:	Small OEM CNI driver.jpg 
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  2. #2
    Join Date
    Aug 2010
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    Hungary
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    Default

    Hi Poul!

    I had the same issue with a similar driver (MGL-H driver for up to 10W 808nm LD)
    I've sent an email with a photo of my driver to sales@cnilaser.com and after 3 days they answered me.


    My problem was also to identitify the pots.All of the TECs and the diode current pots were identitify on the photo.

    Have a try.

    Best Regards :
    Ferenc
    8W full diode RGB
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  3. #3
    Join Date
    Dec 2008
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    veenwouden
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    Default

    Hello Epyn. Could you post the picture with the description of each pot? It would be great since that would help allot of other members that have the same problem aswell.

    Thanks in advance!!!


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  4. #4
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    Default

    It might be worth looking to see if there is any thing on the sinkscreen under the pots?
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  5. #5
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    Johan!

    This is the photo i've sent CNI to identify the important pots for re-tune the laser head's temperature because i've replaced the original 5W 808 nm diode to 10W.

    This is an MGL-H-532 analogue modulation driver board.

    i've bought the laser from Andy-Con.

    Click image for larger version. 

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    Dave!

    There is no anything on the sink side...
    8W full diode RGB
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    Beyond 2X FB3
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  6. #6
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    Thanks Ferenc, i,m sure other people are helped with this


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  7. #7
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    Default

    Quote Originally Posted by epyn View Post

    Dave!

    There is no anything on the sink side...
    Silkscreen on the board under the trim pots, you would need to lift the pots off to see
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  8. #8
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    Oh my bad...
    I didn't soldered off the pots

    At the next maintenance i'll get round to
    8W full diode RGB
    2X 4W 462-520-638
    Beyond 2X FB3
    ☼▬▬▬In Lasers We Trust▬▬▬☼

  9. #9
    Join Date
    Dec 2007
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    Denmark
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    Default

    Hi epyn.

    Know i asked on the "small" driver. But we have also the large one as you posted a pic of yesterday.
    I have a pic of all the pot on the large driver. If any is interested.

    But don't know if the small driver can handle the same current as the big older one ? Any experiance here.
    Normally the 1 watt CNI H makes around 1.2.-1.4 watt @ 4.4-4.6 amps. Beleave it's a 5w Ir source.
    You replace to with a 10W version insted. What current, power (2 or 2,5w?) and beam spec do you get them ?
    Can the Nd:YVO4 crystal and KTP Crystal handle that ?

  10. #10
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    we have also the large one as you posted a pic of yesterday.
    I have a pic of all the pot on the large driver.If any is interested
    I just second that what Johan posted :
    It would be great
    Im interested

    My driver does up to 6.4A (i think because it's for an 1W 532 nm head)
    She can does more amperes though but didn't figured out how I solve it yet.
    Might it be a resistor to replace.Have to back up to draw the circuit diagram.
    Once i did it i will post the schematics who interested.
    -Im experienced in electronics also-

    This laser head from andy_con as i said.
    He sold me as 'not in good condition'.
    In fact there wasn't any problem with the laser though only needed some intracavity align.
    Here is the result(note that on the right picture there wasnt installed the collimator optics.)
    Click image for larger version. 

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    I think my MGL-H head can handles the 10W pump diode since it has large Xtals and If there is a proper PSU.
    Only the diode needs 10 amperes.
    Oh, i have 23A PSU anyway(from a YLODed PS3)
    8W full diode RGB
    2X 4W 462-520-638
    Beyond 2X FB3
    ☼▬▬▬In Lasers We Trust▬▬▬☼

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