IR Sender LED

Issues relating to installation of your USB-UIRT device.

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IR Sender LED

Postby Hicom » Fri Jan 08, 2010 2:02 pm

Is the rear output current limited, means can I connect a LED or IR LED directly or is an additional resistor necessary?
Hicom
 
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Joined: Fri Jan 08, 2010 10:01 am

Re: IR Sender LED

Postby Hicom » Wed Jan 20, 2010 7:54 pm

I have made some measures:
I connected a red LED and an IR LED without a serial resistor. (Only a 1 Ohm type for the current measurment). The LED current was in both cases limited to appr. 30mA. So there is no need to build in a serial resistor to the LED and it' easy to build an external IR transmitter.
Hicom
 
Posts: 2
Joined: Fri Jan 08, 2010 10:01 am


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