知到答案模拟电子技术基础（西安邮电大学）智慧树答案_2022年

第五章

Given this configuration, determine the input impedance if VS = 40 mV, Rsense = 0.5 kΩ, and the input current is 20 μA.（ ）
答案:1,500 Ω
The transistor model replaces the （ ）with the junction diode's ac resistance. Calculate the voltage gain for this circuit.（ ）A transistor amplifier has an input signal applied to its emitter terminal and an output signal taken from its collector terminal. The amplifier is a(n) （ ）.The voltage gain of a very well-designed common collector amplifier configuration, using a pnp transistor, is （ ）.