Author Topic: IR LED over heating -issue-  (Read 5040 times)

Offline balam

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on: March 06, 2008, 12:27:18 PM
set up is
ir led 1.5 volts
1 AA bat 1.5 volts
after few seconds of use the IR LED over heats and also the battery over heats.
any solution for that...




Offline inio

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Reply #1 on: March 06, 2008, 12:36:25 PM
Add a resistor.  Something on the order of 10 ohms probably.



Offline imarzouka

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Reply #2 on: April 02, 2008, 03:23:12 AM
You need to add a resistor. Even if the LED forward voltage is equal to the battery voltage. You need that to limit the current. Use this calculator http://ledcalculator.net