(b) For the active filter circuit in (a) sketch the circuit. Then given that Ri = 10 kΩ, Ci = 10 nF, the feedback resistor Rf = 500 kΩ and the op-amp is a 741, determine the values of;
(i) The -3-dB frequency.
(ii) The time constant τ (in milliseconds)
(iii) The maximum voltage gain of this circuit in dB.
(iv) The voltage gain in dB at a frequency of f = 1 kHz.