Explanation: The magnitude of voltage gain of all-pass filter |VO /Vin| = √(1+(2π/RC)2) / √(1+(2 π/RC)2) =1. 13. What happens if the position of R and C are interchanged in the below circuit diagram?
A. Vin leads VO
B. Vin lags VO
C. VO leads Vin
D. VO leads Vin
Answer:A
Explanation: The magnitude of voltage gain of all-pass filter |VO /Vin| = √(1+(2π/RC)2) / √(1+(2 π/RC)2) =1. 13. What happens if the position of R and C are interchanged in the below circuit diagram?
A. Vin leads VO B. Vin lags VO C. VO leads Vin D. VO leads Vin
Explanation: For the circuit given, the phase angle changes from 0 to 180o as frequency is varied from 0 to ∞. If the positions of R and C are interchanged, the phase shift and band width input and output becomes positive. That is the output (VO) leads input (Vin). 14. Choose the incorrect statement “In wide band-reject filter” .