1. Plot the current-voltage characteristic of the 1N4148 diode model over the domain 0.0 VD 1.0 V and range 0.0 Ip 10.0 mA using a Simulate Analyses DC Sweep with a 0.01 V step. Limit the sweep voltage itself to 0.8 V, and then double-click the upper axis limit for both current and voltage to set the required values. Connect a DC voltage source directly to the diode to establish the voltage Vp. Plot the expression -I (V1), i.e., the voltage source cur- rent that is the same as the diode current except for direction. 2. Connect the remaining circuit of Figure 1.3 on the facing page to the diode and run a DC operating point analysis to determine the diode's Q-point IDQ and Vpq. VS R1 www R2 ID + VDY Figure 1.3: Circuit for Problem 1.3