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 Post subject: voltage drop
PostPosted: 05.01.2005 12:05 
How do I find the voltage drop when there is a ~ where there should be a number? What does the ~ mean?

EX: http://www.lsdiodes.com/3mm/3mmblue.htm

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PostPosted: 05.01.2005 12:43 
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Forward voltage is the value you want. Typical value seems to be 3.3 volts and that is the one you should use in your calculations. Current is then 20mA.

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PostPosted: 05.01.2005 16:49 
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i believe the ~ means that they dont have exact readings for that one. if that case, its just save to go with what u do have listed there. u can add more voltage, just make sure u keep the mA the same for when ur calculating what resistor you would need.

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 Post subject:
PostPosted: 06.01.2005 03:16 
So I should use 3.3v as the voltage drop? And 20mA for the desired LED current?


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 Post subject:
PostPosted: 06.01.2005 03:34 
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Take a deep breath and read all the posts in this thread again and then decide if you really need to ask that question.

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