1. Fig.1 shows a diode circuit. When Vx is 0.8V, the current Ix is 0.1mA. When Vx is 1.2V, the current Ix is 0.3mA. (a)

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1 Fig 1 Shows A Diode Circuit When Vx Is 0 8v The Current Ix Is 0 1ma When Vx Is 1 2v The Current Ix Is 0 3ma A 1 (47.73 KiB) Viewed 16 times

1. Fig.1 shows a diode circuit. When Vx is 0.8V, the current Ix is 0.1mA. When Vx is 1.2V, the current Ix is 0.3mA. (a) Please calculate the values of R1 and is of diode D1. (b) Please use the large signal model to calculate the output voltage, when input voltage Vx is 2v. C) Please use the small signal model to calculate the output voltage, when input voltage Vx is 2v. (d) Please explain why there is difference between (b) and (c). (e) Please use the R1 value and is of diode D1 in (a), and Vx of 2V, to find the output voltage by LTspice operation point analysis. [Hint: use exponential model in tutorial P.17 and set Is (saturation current) in the command.] l R1 W + VX D1 Vout Fig. 1