PHYS345 Electricity and Electronics

Hint for P14-6

Use an inverting configuration; the low frequency gain of -30 dictates the feedback resistance (since the input resistance is specified to be 10k).

To get a low-pass response, a capacitor should also be used to feed the output back to the inverting terminal. The feedback network will thus be a resistance Rf in parallel with a capacitor. Examine the resulting expression for the gain and set the breakpoint frequency to 3 kHz to determine the appropriate value of the capacitance.

Last updated Dec. 1, 1998.
Copyright George Watson, Univ. of Delaware, 1998.