An analytical formula variety of the lower cut-off frequency of amplifier with parallel negative-feedback
Fang Tian-shen · 2004
A new formula of the lower cut-off frequency f_(Lf) of amplifier with parallel negative-feedback was given by equivalent circuit and Kirchoff's law.The functional relationship between f_(Lf) and parameters of circuit can been described accurately by the new formula obtained.It has been proved that the method of block diagram doesn't give expression to kirchoff's law of circuit.