Recent content by kimandrew20

Thanks for the response Berkeman! So does this mean that the presence of the buffer doesn't really change any calculations for the behavior of the opamp? Like, if I were to draw a bode plot for the second opamp, it wouldn't be affected by the presence of the unity buffer?

Homework Statement Hi, I'm trying to figure out the component values(Rf and C) for the circuit given. The circuit must be designed so that it has a cut-off frequency of 1khz and a low frequency magnitude gain of 1. I know how to do it if i ignore the unity buffer in front but I'm not sure how...

I tried it again and I got a value for the capacitance and the resistors. Does this look correct? R1 will equal the input impedence (The two inputs, V- and V+ are at approximately the same voltage, R1 is at ground voltage, therefore R1 = input impedence = 22 kΩ Gain (A) = (Rf/ R1) →...

Is the input impedance just the value that the problem has specified? The 22kΩ value? Yes, just a single stage.

Homework Statement Design this circuit to give a cut off (-3dB) frequency of 1kHz, a low frequency gain of 20, and an input impedance equal to 22kΩ Homework Equations The Attempt at a Solution So, I started off with Vout/Vin = [-R2/R1]/[1 + sCR2. I also know that the dc gain...