Op amp power supply ripple and noise appearing on the noninverting input is reduced by adding
A) an emitter follower.
B) a large input resistor.
C) a bypass capacitor.
D) other supply voltage.

Question

Quizplus · Accepted Answer

Adding a bypass capacitor will provide a low impedance path to ground for AC signals, effectively reducing power supply ripple and noise on the noninverting input. Choice A (an emitter follower) and B (a large input resistor) do not directly address the issue of power supply noise and may even introduce additional noise. Choice D (other supply voltage) may not be feasible or practical in all applications.

Op Amp Power Supply Ripple and Noise Appearing on the Noninverting