detection circuit

Hello, I have some questions regarding my implementation of IR LED detection with a phototransistor. Idea The main idea of the circuit is to make a circuit with incorporating a phototransistor, which will create a 0-5V signal on its output whether it detect IR LED presence. IR LED will be...

Hi Guys I’m looking to build a circuit which will light an led when it detects an 420k resistor will i require a transistor circuit for this to work? If this post is in the wrong section I apologise i am a new user?