Initial System Test

Week 7 Milestone Deliverable

Link to file 

Video demonstrating initial test of full system circuit, generating our own 200kHz signal, transmitting and receiving with our transducers, and amplifying through our receiving circuit. The blue signal on the oscilloscope shows the output from our receiving circuit, amplified to about 18V peak to peak. The noisy yellow signal is the input from our circuit going into the transmitter and is not relevant to signal quality for our project. We were able to partially block the blue acoustic signal to demonstrate attenuation.  Attached below are schematics of the circuits in the video, including an update to our transmitting circuit to include a current amplification step (Class AB Amplifying Circuit) before the transducer needed to avoid overheating our original op-amp.