Hey everyone I just have a few quick and probably dumb questions regarding using an infrared sensor, because it seems like I can’t find much useful information about the actual working of this kind of component.
I am referring to the 3 terminal kind of IR sensor package with the metal around the photodiode. Ibought some cheapo components a while back and the datasheet was in Chinese. I can’t seem to find any info on how to actually do calculations. I understand it is tuned to 38 kHz.
I want to know how I can draw the circuit and do basic calculations to arrive at an expected output voltage.
I have messed around a little by connecting a resistor to the output pin with the resistor’s other terminal connected to ground with an oscilloscope probe connected across the resistor. I see there is a constant DC voltage and if I push my tv remote buttons I see digital modulation causing that dc voltage to be pulled low, but don’t know how to calculate what that DC voltage will be. I was thinking of it like a diode but the 3 terminals are confusing me.
Is the output pin supposed to be a current or voltage? I know someone can draw this in a simple circuit so if someone can please post it with an explanation I would appreciate it. I don’t have the information about the component itself but I did my best to describe this package, and know someone must know what I am referring to! Thanks in advance!
I am referring to the 3 terminal kind of IR sensor package with the metal around the photodiode. Ibought some cheapo components a while back and the datasheet was in Chinese. I can’t seem to find any info on how to actually do calculations. I understand it is tuned to 38 kHz.
I want to know how I can draw the circuit and do basic calculations to arrive at an expected output voltage.
I have messed around a little by connecting a resistor to the output pin with the resistor’s other terminal connected to ground with an oscilloscope probe connected across the resistor. I see there is a constant DC voltage and if I push my tv remote buttons I see digital modulation causing that dc voltage to be pulled low, but don’t know how to calculate what that DC voltage will be. I was thinking of it like a diode but the 3 terminals are confusing me.
Is the output pin supposed to be a current or voltage? I know someone can draw this in a simple circuit so if someone can please post it with an explanation I would appreciate it. I don’t have the information about the component itself but I did my best to describe this package, and know someone must know what I am referring to! Thanks in advance!