Recent content by watsons

Just to update, I tried putting a foam plastic plate under the Al plate and half of the "noise" amplitude reduced (though I want to reduce more)

The lowest possible bandwidth to set is 20MHz for this model. If I use LPF for the circuit, I will also need constructing a amplifier circuit to distinguish the noise(0.2V) and my desired signal(0.3V).

Hi I'm a beginner on using an oscilloscope and I'm sorry if my question may be repeated in other posts. I was working on a circuit with the following materials: (1) an Al plate (5mm thick) (2) a disk-shaped piezo transducer with special electrodes (product...