Day 26 (No Lab)

We started the day by talking about the misleading term cutoff frequencies. The resonant frequency is the point where the current/voltage going through the circuit is the highest and the cutoff frequencies are where the clarity that a signal reciever starts to notice a decrease in quality. We did a derivation of what the output of the current would by when the circuit is at one of those cutoff frequencies.

We continued on the topic of frequencies by discussing bandwidth, which is the difference between the upper and lower cutoff frequencies, quality, which is the ratio between the resonant frequency and the bandwitdth. However formulas for the upper and lower cutoff frequencies change whether the circuit is a series or parallel RLC circuit but the relationships between the bandwidth, quality, and resonant frequency are the same for both and we did an example of calulating that for a parallel RLC circuit.

We then did an example where one of the three circuit elements have been set and we need to determine what the value of the other two elements should be in order for the circiut to work at the designated resonant frequency and cutoff frequencies.