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???
04/02/10 16:45
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#174783 - never say never
Responding to: ???'s previous message
Put a cap of about 100n...1µF in parallel to the laser diode to prevent short overvoltages. It allows the laser diode to smoothly turn-on, when "hard" connecting the supply voltage to this arrangement and is a certain protection against ESD too, when handling the laser diode. This cap should never be omitted.

This cap should be omitted if the diode is to be modulated

Erik


List of 17 messages in thread
TopicAuthorDate
Can I drive a Laser diode with only a resistor?            01/01/70 00:00      
   No            01/01/70 00:00      
      no datasheet =(            01/01/70 00:00      
         CURRENT            01/01/70 00:00      
         Guessing time, again...            01/01/70 00:00      
   not really            01/01/70 00:00      
      leds are contant current device            01/01/70 00:00      
         Ehh???            01/01/70 00:00      
         Some lasers requires pulsing            01/01/70 00:00      
            ia a laser pointer actually a laser?            01/01/70 00:00      
               It is, usually...            01/01/70 00:00      
   is it JUST the diode? ...            01/01/70 00:00      
      Same module, another use            01/01/70 00:00      
         unless ...            01/01/70 00:00      
   Yes, but...            01/01/70 00:00      
      never say never            01/01/70 00:00      
         100R times 100nF gives 10µsec...            01/01/70 00:00      

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