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Thread: SP 261B psu schematic

  1. #1
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    Default SP 261B psu schematic

    This question is mainly directed to Steve aka mixedgas but if anyone else have what im asking for, feel free to answer.

    Im looking for the schematic for the sp 261B psu, mainly because i wanna figure out the light sensor in the 161B head, if its calibrated for 1mV/mW if hooked straight to a dmm or if the signal from it passes some transistor or opamp circuit on the way to the power measurement output in the remote control connector. I did put a dmm directly on the wires coming from the sensor and got 25mV with the laser running at 7.86Amps.

    Note that i do not have one of these psu´s available to backtrace the sensor wiring, which is a shame

  2. #2
    mixedgas's Avatar
    mixedgas is online now Creaky Old Award Winning Bastard Technologist
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    Default

    Quote Originally Posted by Experimentonomen View Post
    This question is mainly directed to Steve aka mixedgas but if anyone else have what im asking for, feel free to answer.

    Im looking for the schematic for the sp 261B psu, mainly because i wanna figure out the light sensor in the 161B head, if its calibrated for 1mV/mW if hooked straight to a dmm or if the signal from it passes some transistor or opamp circuit on the way to the power measurement output in the remote control connector. I did put a dmm directly on the wires coming from the sensor and got 25mV with the laser running at 7.86Amps.

    Note that i do not have one of these psu´s available to backtrace the sensor wiring, which is a shame

    I don't have a 261, but what about a 262???

    http://www.skywise711.com/lasers/thumbSP262a.jpg

    http://www.skywise711.com/lasers/reference.html

    Thanks to Skywise for hosting .....

    Steve
    Qui habet Christos, habet Vitam!
    I should have rented the space under my name for advertising.
    When I still could have...

  3. #3
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    Default

    Bummer
    I´ve had the schematic for the 262 for some time already but its no help for me as the remote control jack isent even drawn out

    Oh well, i guess i´ll have to wait till i get an lpm after all then.

    Thanks anyways.

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