Ultrasonic sensor,filtering frequencies

Community General Discussions
1

I want to use 40kHz ultrasonic sensors
but I dont know how to filter other frequencies and save 40kHz,


2

very interesting.so you

very interesting.

so you have applied op-amp in case of filtering.

not RLC filter,

dude,I promise to improve myself very soon to ask much better questions.

but thanx for answering my questions