Question

To achieve the low frequency response for medical applications, the amplifier configuration must contain?

(a) higher resistance

(b) higher capacitance

(c) lower resistance

(d) lower capacitance

Answer 1

Correct option is (b) higher capacitance

Explanation: To achieve the low frequency response required for medical applications, the amplifier must have large values of coupling capacitance. In all RC-coupled amplifiers, low frequency response is limited by the reluctance of the coupling capacitors. The response should be down to less than one hertz which is a very frequent requirement.