if you want to detect IR only | Electronics › Electronics › Phototransistors › if you want to detect IR only July 2, 2011 at 3:30 pm #6413 sourabhParticipant if you want to detect IR only then you can use photodiode. if you want a higher range use TSOP sensors. And are you sure that you have used phototransistor, usually they don’t emmit light. If it is so please mention it.
