From the circuit above, this is what I have to do: " Connect the circuit with R3 equal to 470 kΩ. Set the input frequency to 100 Hz. Adjust the signal level to get an output of 5 Vp-p. Record gain and upper cut off frequency. Multiply gain and bandwidth."
What I did was this:
I used a function generator and made the frequency to 100Hz. As for amplitude, I chose 1.25 Vp so that in PR1 it shows 5vp-p (I drew a red arrow and labelled it as 1 to make it easier to locate). This is what it meant by "Adjust the signal level to get an output of 5Vp-p" right?
Next, in order to get the gain. I placed a probe (PR2) at the output and made PR1 as the reference. Then in the list of values, there's a V(gain_AC) which is equal to 5.66 (Again, I drew a red arrow and labelled it as 2). Is this the gain of the circuit already?
Lastly, to get the cut off frequency I did an ac sweep and located where it drops by 3db (I already changed the vertical scale to decibels). The result is the following:
Is the value that I highlighted which is 2.1348k the upper cut-off frequency I'm looking for? And, this is also the bandwidth right?
To sum it up, I basically have three questions:
- Was I able to adjust the signal level properly to get an output of 5 Vp-p?
- Is the V(gain_AC) shown by the probe, the actual gain of the circuit?
- In the AC sweep I did, is the value I highlighted the upper cut-off frequency and the bandwidth?
If you need more information, please tell me. Thank you so much for your help!