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Thread: Flexmod and 445

  1. #11
    Join Date
    Jul 2009
    Location
    San Francisco
    Posts
    75

    Default Need help!

    I'm staring at my bench with all my tools and a Flexmod P3 ready to be hooked up to a Laserbug and to a 445. Reading the Flexmod user manual is getting me confused about what to do/solder/connect to start with and in which order (Please forgive me, I'm French):

    Interlock: Does it has to be connected to V+ to start with or just leave it alone? I understand the 7 sec delay thing but I'm confused if I have to connect it in some way just for the initial setup. What is the difference between open and close interlock?

    The rest of the manual seems pretty straight forward. I just don't want to fry the P3 or the diode.
    Thanks.

    Fred.

  2. #12
    Join Date
    Oct 2009
    Location
    Wilson, Wisconsin
    Posts
    133

    Default FlexMod 3's

    Here is DRLaser said to me because I had the same question.
    The interlock is to be connected to V+. Be sure you set the currents before connecting to your laser. With proper operation the red light will not turn on unless the interlock is open or the diode loop is open. It is bullet proof cause I tried to kill mine. Ha Ha JH

  3. #13
    Join Date
    Jul 2009
    Location
    San Francisco
    Posts
    75

    Default

    Woah!

    This is what I call fast and efficient support! Thanks for the tip!
    I'm at the powering up stage: Modulation +- tied together, V+ connected to Interlock and DVM connected to LD outpout as a load to set bias current. Once current set what append to the interlock assuming I get to next stage which is connecting the diode?

    Quote Originally Posted by santanas View Post
    Here is DRLaser said to me because I had the same question.
    The interlock is to be connected to V+. Be sure you set the currents before connecting to your laser. With proper operation the red light will not turn on unless the interlock is open or the diode loop is open. It is bullet proof cause I tried to kill mine. Ha Ha JH

  4. #14
    Join Date
    Jul 2005
    Location
    Kansas City
    Posts
    212

    Default

    Quote Originally Posted by gottaluvlasers View Post
    hey-

    any ideas why in only getting ~450mW-550mW out of my flexmod3? I just put together a (what i hoped would be) 1W/445. No matter what i set the Flexmod to i only gett about max. 500mW out of it.

    At one point, i potted it up and it got up to ~750-800mW but then backed off and DRASTICALLY diminished power to <100mW.

    its just roughy set up now. HEatsinked and clamped to a block of aluminum. so, i dont think its getting too hot. The diode is brand new also with a lasorb on it.

    any ideas?

    -Marc
    I had exactly the same thing happen just yesterday and found out that my power supply was giving up. When I reached a certain current it would just dip back down to around 500mW. My supply was not strong enough.
    Larry

  5. #15
    Join Date
    Jul 2009
    Location
    San Francisco
    Posts
    75

    Default

    Woah!

    This is what I call fast and efficient support! Thanks for the tip!
    I'm at the powering up stage: Modulation +- tied together, V+ connected to Interlock and DVM connected to LD outpout as a load to set bias current. Once current's set what append to the interlock assuming I get to next stage which is connecting the diode?

    Quote Originally Posted by santanas View Post
    Here is DRLaser said to me because I had the same question.
    The interlock is to be connected to V+. Be sure you set the currents before connecting to your laser. With proper operation the red light will not turn on unless the interlock is open or the diode loop is open. It is bullet proof cause I tried to kill mine. Ha Ha JH

  6. #16
    Join Date
    Oct 2009
    Location
    Wilson, Wisconsin
    Posts
    133

    Default amps

    Quote Originally Posted by infredible View Post
    Woah!

    This is what I call fast and efficient support! Thanks for the tip!
    I'm at the powering up stage: Modulation +- tied together, V+ connected to Interlock and DVM connected to LD outpout as a load to set bias current. Once current set what append to the interlock assuming I get to next stage which is connecting the diode?
    Be sure to start low 50ma and work up to what you like. Good luck JH

  7. #17
    Join Date
    Jul 2009
    Location
    San Francisco
    Posts
    75

    Default

    OK, I got past the threshold setup at around 40/50 mA then I connect the modulation to a 5 volt source but after a while the red LED comes on and I can't adjust max current? Should the Interlock be disconnected before adjusting max current? What's going on? Help!

    Fred.

    Quote Originally Posted by santanas View Post
    Be sure to start low 50ma and work up to what you like. Good luck JH

  8. #18
    Join Date
    Oct 2006
    Location
    Cleveland, Ohio
    Posts
    2,342

    Default

    Quote Originally Posted by infredible View Post
    OK, I got past the threshold setup at around 40/50 mA then I connect the modulation to a 5 volt source but after a while the red LED comes on and I can't adjust max current? Should the Interlock be disconnected before adjusting max current? What's going on? Help!

    Fred.
    If the red LED is coming on it means either your interlock loop is not solid, your diode loop is not solid, or your power supply voltage is sagging too close to the diode operating voltage.

  9. #19
    Join Date
    Jan 2009
    Posts
    1,622

    Default

    Forgive this question if it seems dense, but is it or is it not possible to power a 445nm diode with 5V input voltage using the flexmod P3? It is possible with the previous version, I have one in my projector right now, but if the new version no longer can it throws some kinks in my plans..

  10. #20
    Join Date
    Jul 2006
    Location
    Connecticut, USA
    Posts
    2,478

    Default

    EF-

    it seems to me that it can work on 5V input as long as the power supply has enough current to throw at the Flexmod. I may be wrong, but i think it is ok to use a 5V. however, going to a 12V may be better. Im sure Dr. Lava will chime in and confirm or deny what i said.

    -Marc
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