Quote:
Originally Posted by omar
I present to you this important IC in the field of remote sensing, which is characterized by selectivity in detection, as you can specify the central frequency you want to search for, and it will detect that signal for you if it is present in the field. While rejecting other unwanted signals. Despite its simple appearance, the circuit is complex and consists of more than 62 transistors.
For full information and how to use, see the data sheet.
With a note, it is used in detecting radio frequencies, light, infrared, sound, and radar modifications. It depends on the added sensor circuit.
Note: You must study the data sheet well to be able to use it and work correctly.
https://www.homemade-circuits.com/lm...-features-and/
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This is a good option. But you will have to look for high-quality microcircuits. Personally, I found a spread of 20 hertz at a frequency of 10 kHz with a spread from the desired frequency, and the lower the transmission frequency, the greater the error. Or you will have to add more nodes to the circuit, as is done in the Amostra filter.