a. Determine A u = V o / V i at f =fc for the high-pass filter. b. Determine A u

Question

a. Determine Au = Vo/Vi at f =fc for the high-pass filter.

b. Determine Au = V0/Vi at two octaves above fc. Is the rise in Vo significant from the f = fc level?

c. Determine Au = V0/Vi at two decades above fc. Is the rise in Vo significant from the f = fc level?

d. If Vi 10 mV, what is the power delivered to R at the critical frequency?

Determine Au = Vo/Vi at f =fc for the high-pass filter. Determine Au = V0/Vi at two octaves above fc. Is the rise in Vo significant from the f = fc level? Determine Au = V0/Vi at two decades above fc. Is the rise in Vo significant from the f = fc level? If Vi 10 mV, what is the power delivered to R at the critical frequency?

Explanation / Answer

A. 0.707. This is defined as cut off frequency.
B. The rise is just by 3 dB. The gain becomes almost 1.
C. The gain is 1.
D. The output is 7.07mV, and power is half the power that one might get across the resistor if the filter were absent, and replaced by a short.

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