Chapter 10: Amplifiers Frequency Response
A critical frequency (also known as cutoff frequency or corner frequency) is a frequency at which Pout drops to one-half (50%) of its P(mid) Æ (at 3 dB reduction in the power gain) Also, at the critical frequencies the voltage gain is 70.7% of its midrange value and is expressed in dB as (at 3 dB reduction in the voltage gain)
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