UTMonkey
Member
If I pulse an infra-red LED at around lets say 5khz and point it at a PhotoTransistor (Infrared), would I be correct in saying
1. The distance between the RX and TX can be further apart because of the pulsing?
2. To stop other frequencies I would need some kind of filter?
Would I take the signal from the transistor:
Am I on the right track?
1. The distance between the RX and TX can be further apart because of the pulsing?
2. To stop other frequencies I would need some kind of filter?
Would I take the signal from the transistor:
- Run it through a highpass filter letting signals at 4.5khz and above pass, then
- Run it through a lowpass filter letting signals 4.5khz and below pass
- Until what I am left with is my signal?
Am I on the right track?