diodecircuitsapplications内容摘要：
ircuits (1) Since virtually any nonlinear chtic is approximately linear (straight) if we consider a sufficiently small segment THEN We can find a linear smallsignal equivalent circuit for the nonlinear device to use in the ac analysis The small signal diode circuit can be substituted by a single equivalent resistor. Linear Small Signal Equivalent Circuits (2) dc supply voltage results in operation at Q An ac signal is injected into the circuit and swings the instantaneous point of operation slightly above and below the Q point For small changes DQDDD vdvdii iD –the small change in diode current from the Qpoint vD –the small change in diode voltage from the Qpoint (diD/dvD) – the slope of the diode chtic evaluated at the。阅读剩余 0%
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