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Thread: Uniphase Argon Controller

  1. #1
    Join Date
    Feb 2005
    Location
    Florida
    Posts
    802

    Default Uniphase Argon Controller

    I had to finish one of those unfinished projects

    This one was for a controller for my Uniphase 2210 Argon laser
    First after gloating over the plans here:
    http://repairfaq.ece.drexel.edu/sam/...sc.htm#asccu1r
    I had made it work ok.. for some reason the LCD Panel meter I had
    would not work directly from the +15volts at less than 40ma available
    from the supply without damage.. it wasnt a TRUE common isolated unit.
    And it wouldnt work using the same grounds...strange,, headscatching time >>>

    After a year goes by, tonite I decided to use a small DC to DC converter
    to supply the power to the LCD panel.
    My unit looks looks like this:


    One circuit I could have used was Kevins (junktronix)


    But since I had already made it from sams, I continued with mine
    First , I had to acquire a LCD PM that had separate signal (-) input
    from the 9v power (-) input ... Isolated, because we are measuring current
    and power meter output mV.
    I found a cheap $5 one off ebay..
    After selecting the correct values of resistance for the meter scale
    ..I wanted 2.00volts to read 20.0 on the display during Amps
    and 200 during mW , ..
    this was easy as their is a decimal point
    jumper selecting on the board...nice.

    Then, I added a Datel DC/DC converter BWR-15/100-D12 this unit is real small
    it measures 20mm by 32mm.
    This takes care of isolating the common and (-) inputs for the LCD meter.
    which takes +7 to 15volts in and makes +/- 15volts out at 100ma
    we only need one of these outputs..
    I used one to drive a small 9volt regulator for the LCD panel power.. total current draw was only 18ma.. nice again.
    If I had tried to use anything else , that would have meant
    to use an external power supply , which I didnt want to do.!!!
    If I did I would have used an LED display..

    This thing works...
    I did have to calibrate my meter to read correct milliwatts
    a simple voltage divider fixed that!!!
    anyway...
    After a delay of about 30seconds ..
    In the idle mode my unit draws 3.8 amps at puts out around 5mW
    In the Current mode at 9.5 Amps I get almost 50mW
    I could go to 12amps but whats the point !!!
    This tube is new and I dont want to ruin it..
    In the Light mode adjustable up to 6.7 amps I get 22mW

    My circuit here:
    "My signature has been taken, so Insert another here"
    http://repairfaq.ece.drexel.edu/sam/laserfaq.htm
    *^_^* aka PhiloUHF

  2. #2

    Default

    hi
    i have choose to insulate my laser controller from the laser supply too. because there is lot of high voltage in the PSU
    i have used ISO122 from Burr Brown for this

  3. #3
    Join Date
    Feb 2005
    Location
    Florida
    Posts
    802

    Default

    Hi Genesis

    Welcome aboard ... Glad to see you here...

    Those ISO122's are great little units..
    I had the Datels laying around so I used it.
    "My signature has been taken, so Insert another here"
    http://repairfaq.ece.drexel.edu/sam/laserfaq.htm
    *^_^* aka PhiloUHF

  4. #4

  5. #5
    Join Date
    Feb 2005
    Location
    Florida
    Posts
    802

    Default

    Genesis

    I just looked at your controllers ,, Very nice
    "My signature has been taken, so Insert another here"
    http://repairfaq.ece.drexel.edu/sam/laserfaq.htm
    *^_^* aka PhiloUHF

  6. #6
    Join Date
    Jul 2005
    Location
    UK
    Posts
    249

    Default Genesis

    Genesis :

    AWSUM LCD readout systems you have. Laser \ PC.

    Very good man!
    Regards,

    Aidan

  7. #7

    Default

    thank you
    now i work on my laser harp last test video >

  8. #8
    Join Date
    Jan 2005
    Location
    Norway
    Posts
    1,301

    Default

    Quote Originally Posted by Genesis
    thank you
    now i work on my laser harp last test video >
    WTF is that ?!?

    That have to be fake ... :roll: :roll: :roll:

    That is damn cool !
    Almost like my idea of "moving-beams" ..
    I once got a idea of interactive laser beams, when you grab them with your hand you move them

  9. #9

    Default

    this is not a fake you have more infos at the link in my signature
    i have used the harp in germany at the regensburg meeting of laserfreak and the harp work really

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