ir diode from a LPC-815 sled.

• Dec 5, 2008

• #1

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carulli

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How much do I power these at and how much will I expect for an output?

I am planing on using only a cap and a resistor for a driver, so do I use the voltage drawn for the drode or the voltage of the battery for v=ir. and wht voltahe does the diode use?

 

• Dec 6, 2008

• #2

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nvmextc

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I have one running at 150ma for 90mW. It doesn't get hot really so can propably be pushed a bit.
I'm not sure how the maths works for v=ir but the IR only has a voltage drop of about 2.5V, less even.

 

• Dec 7, 2008

• #3

C

carulli

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for the v (in v=ir) do I use the voltage drop of the diode or the output of the battery?

 

• Dec 8, 2008

• #4

styropyro

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Coiler said:

for the v (in v=ir) do I use the voltage drop of the diode or the output of the battery?

Click to expand...

You do the voltage of the batteries minus the voltage drop of the diode.