Hello
I got 2 types of infrared Phototransistors, the QSE133, and the QSE113.
The QSE133 actually is a photodarlington and the QSE113 isn't.
When its dark the QSE133 marks a gain of about 70 and the QSE113 with a candle in front marks a gain of about 70..
I want to have a gain of about 200, but neither of the phototransistor can produce that, the QSE113 produce too little and the QSE133 produce too much.
My point is if there's any way to reduce the QSE133 gain.
Any recommendations are accepted
here is the circuit im using, that transistor thats there is a MJ11032 instead of the 2N2222.
-Yoda
I got 2 types of infrared Phototransistors, the QSE133, and the QSE113.
The QSE133 actually is a photodarlington and the QSE113 isn't.
When its dark the QSE133 marks a gain of about 70 and the QSE113 with a candle in front marks a gain of about 70..
I want to have a gain of about 200, but neither of the phototransistor can produce that, the QSE113 produce too little and the QSE133 produce too much.
My point is if there's any way to reduce the QSE133 gain.
Any recommendations are accepted
here is the circuit im using, that transistor thats there is a MJ11032 instead of the 2N2222.
-Yoda