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Thread: Who make DPSS lasers with "negative" conrol voltage?

  1. #1
    Join Date
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    Default Who make DPSS lasers with "negative" conrol voltage?

    Who have big experiense with using DPSS laser modules...
    By my data, MOST producers use POSITIVE voltage for control of laser modules: zero voltage - "closed" beam; PLUS 5 Volt - "open" beam.

    But one my client is sure that very many manufacturers use "negative" control (o to MINUS 5Volt)

    Write here please statistic for type of laser control...
    Ihor

  2. #2
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    May 2008
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    Default

    Quote Originally Posted by riyalasers View Post
    Who have big experiense with using DPSS laser modules...
    By my data, MOST producers use POSITIVE voltage for control of laser modules: zero voltage - "closed" beam; PLUS 5 Volt - "open" beam.

    But one my client is sure that very many manufacturers use "negative" control (o to MINUS 5Volt)

    Write here please statistic for type of laser control...
    Ihor
    My blue DPSS uses negative modulation. It's from Dragon Lasers.

  3. #3
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    Default

    Lion lasers use inverted modulation (0V = full on)

  4. #4
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    Default

    Just checked my Neo-Neon DPSS and diode stack modules and those use negative modulation too.

  5. #5
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    Mantova (Italy)
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    I have one Lion DPSS blue TTL. When I leaved ttl cable unconnected the laser is on, so 0V, on. However, when I connect it to a DAC, it is off between 0 and ~2V then it turns on.

    Any idea of the reason?

  6. #6
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    Default

    CMOS inputs left unconnected read "high", not "low".

  7. #7
    Join Date
    Jan 2007
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    Default

    Viasho has Positive Voltage for the lasers.
    http://www.viasho.com
    wzc@viasho.com
    Wechat & Whatsapp: +8613911142669

  8. #8
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    laserwave had both "positive" and "nagative" TTL, you can choose with you like..
    Best regards!
    Bridge
    Laser-wave can supply:
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  9. #9
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    Default

    Tried some Viasho lasers, showed very positive voltage to me

  10. #10
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    Mar 2008
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    Default

    Quote Originally Posted by heroic View Post
    CMOS inputs left unconnected read "high", not "low".

    Clear!!! Thank you very much!

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