How should we add a low-pass filter to the converter? All Questions › Category: Power Electronics › How should we add a low-pass filter to the converter? 0 Vote Up Vote Down CS Electrical And Electronics Staff asked 4 years ago Options: Use an op-amp filter circuit Use an L-C filter circuit Use an R-C filter circuit 1 Answers 0 Vote Up Vote Down CS Electrical And Electronics Staff answered 4 years ago Use an L-C filter circuit, is the correct answer. We should employ high-efficiency filter elements: inductors and capacitors can filter with high efficiency, but op-amps and resistors consume substantial power.