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   sci.electronics.design      Electronic circuit design      143,326 messages   

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   Message 141,863 of 143,326   
   Phil Hobbs to Cursitor Doom   
   Re: Dummy Load for Laser Driver Developm   
   27 Dec 25 02:11:15   
   
   From: pcdhSpamMeSenseless@electrooptical.net   
      
   Cursitor Doom  wrote:   
   > Gentlemen (IOW not you, Bill),   
   >   
   > I've got a bunch of green laser diodes which are specified for 370mA   
   > current draw. I've been using a straight 5 ohm WW resistor rated at   
   > 10W as a dummy load, but it's crude and inaccurate. Is there something   
   > better I should be using? I've got some 2W blue ones to do later on as   
   > well so something which could be adapted for those would be a plus.   
   > Ideally something which mimics the knee you get as it starts to   
   > conduct.   
   >   
   > Cheers,   
   >   
   > CD   
   >   
      
   If you’re trying to get wide bandwidth, you need to include the wildly   
   varying junction capacitance.   
      
   Cheers   
      
   Phil Hobbs   
      
   --   
   Dr Philip C D Hobbs  Principal Consultant  ElectroOptical Innovations LLC /   
   Hobbs ElectroOptics  Optics, Electro-optics, Photonics, Analog Electronics   
      
   --- SoupGate-DOS v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)   

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