I have a IRED that have the following characteristics and i have a phototransistor that also have the following characteristics. I want to know how to calculate the distance between them from their characteristics.The manufacture is Perkin Elmer optoelectronics. Thanks.
I want to achive 6 or 8 m distace but with only a ired and a phototransistor.Maybe and an amplifier for the phototransistor nothing else.Can i achive this distance with these components
I am trying to do ir photo detectors.Photo sensors that detects objects if the beam cuts.For various applications like doors(if anyone pass the door then open the lights) etc.
For the large distances you're talking about, it's probably easiest to use IR receiver IC's, and modulate the transmitter at 38KHz. You also need to provide some sort of coding as well - the receiver won't work with just a carrier. Probably the easiest way is to use a small PIC at each end?.
I don't have space and the cost of a PIC is to high for this application. I have use ir receivers modules but i had the problem that you say. I had to send some data so. I beleve that an ired , a phototransistor and an applifier.Or and ired that send a frequency in 30KHz a phototransistor a band pass filter and an applifier.What do oyu think?
I don't have space and the cost of a PIC is to high for this application. I have use ir receivers modules but i had the problem that you say. I had to send some data so. I beleve that an ired , a phototransistor and an applifier.Or and ired that send a frequency in 30KHz a phototransistor a band pass filter and an applifier.What do oyu think?
I want only to know what is the distance that i can achilve between the emitter and the receiver. The distance that i can detect an object between. I don't want to mesure the distance with these components.Thanks