- Joined Apr 29, 2017
I am experimenting with some ultrasonic transducers and have encountered a small issue with the receiver. At this stage the receiver is just the second transducer without any additional circuitry. The received signal sits on top of a 50Hz noise signal (presumably from mains). In yellow is the transmitter and in purple the receiver. You can see the slight curve at the end there and if I adjust the time scale the 50Hz noise is visible. Is there a way to filter that out? I assume the noise isn't present when the probe isn't connected. Will this problem go away after the amplifier stage is connected? Any ideas?