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Re: Splitting Infrared with 3.5mm splitters ?
>LED with the lowest Vf ...
Interesting ... our ancient hi-fi IR transceivers have three IR LEDs
seemingly in-series behind their red panels ... not sure why ...
Chris
Keith Doxey wrote:
>>Will a strong enough IR signal split over a couple of 3.5mm
splitters ok?
>>
>>
>>
>
>Its not the strength of the IR, its the ability of the driver to drive
>multiple LEDs.
>
>Depending on the output voltage of the driving device there are two
ways of
>splitting the signal.
>
>If the voltage is high enough then you can connect the two IR emitters
in
>series. They will operate at a slightly reduced current but most
equipment
>will work fine with that.
>
>the second option is to connect them in parallel but in that case you
really
>need to include a resistor in series with each emitter to allow for
>diferences in the forward voltage of the LEDs. a value between 100 and
510
>ohms should work fine. Without the resistors, the LED with the lowest
Vf
>will hog all the current so the other LED will not work at all.
>
>HTH
>
>Keith
>
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