ok im new here and to lasers, ive been trying to get a 100mw blue laser to work, but when i hook it up nothing happens. ive checked all the connections and it seems to be fine. if i can get a resistance reading through it then it should be all connected right. but the laser doesnt work and i have never been able too get it to work. the driver im using says its for a red laser does that really matter, or is my diode fried?
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need some advice or help
- Thread starter FLASH823
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Why would you hook a red driver up to a "blue" diode? Just wondering, and also your post is to vague to help you'll need to post more info. Welcome to the forum.
this is my driver 200mW red laser diode driver / constant current /current adjusta [OLRDB-200] - $3.89 : Welcome to O-Like.com, Your source for laser products im using it because it came with my housing and its not the one advertised with it. and my diode is http://www.captainjacksonshoppingcenter.com/imagesForHongkong/laserdiode/100mwdatasheet.pdf i bought it off of ebay before finding this forum now i know better, but are these not compatible for a pwer source i have 2 3V cr2 batteries
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The driver data are:
Input voltage :4-6V
Output voltage :2.5-2.8V
Output current::150-350mA
The diode requires 5-6 volt and the driver eats something like 1.5-2.5V or more.
It sounds perfectly reasonable that it has never worked.
Input voltage :4-6V
Output voltage :2.5-2.8V
Output current::150-350mA
The diode requires 5-6 volt and the driver eats something like 1.5-2.5V or more.
It sounds perfectly reasonable that it has never worked.
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Your setup does not work, it is possible that you have also broken the diode with wrong polarity. The datasheet does not specify the polarity.
You need a driver that will go up to 5-6V in output, or you can make it yourself with a LM317.
Search the forum for driver drawings, it is amazing what you can learn here.
You need a driver that will go up to 5-6V in output, or you can make it yourself with a LM317.
Search the forum for driver drawings, it is amazing what you can learn here.
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Not really, a DMM applied with correct polarity can tell you if it is open circuit, but not if it is LED'ed.
(Wrong polarity will likely kill it)