Given the data sheet for an N-channel JFET is: Idss = 10 mA, Vp = 4V. What is the value of Vgs for a drain current of 3 mA flowing ? Answer:

(a) Refer to the circuit in figure 1 below: R = 5 k2 ww ID Vp: = 10 V VD Figure 1 i. Determine and draw the load line for the circuit. ii. Calculate VD, given ID, is 3.5mA. Determine the power dissipated in the diode. iii.

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Please fill the table below. Vp = 0.7V for both diodes. 1. State which diode is on. 2. Replace the diodes with their model 3. Determine Vo and I for the different input voltages (A and B) given in the table below. Show all your work. D1 A. B DI D3 Vo Si 3 2 A O Si vo D2 4 IIKO 6 v

In a voltage regulator circuit in the image below, V1=25V, Vz=10V, Ri=200 ohms and Pz(max)=400mW a) determine IL, Iz, and I1, if RL=350 ohms. b) determine the value of Rl that will established Pz(max) in the diode c) determine the range of load resistance

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Q3: bridge rectifier circuit shown in Figure (1), with a forward diode resistance Rd=12, and Rd=xo for a reverse bias. The input voltage of the circuit is 240V and 482 load resistance. Determine: The de load current, the power input efficiency and the PIV rating is required for the diodes. D4 D1 Rd=10 RL=480 Vs Vrms Vo D3 D2 Figure 1

*Use 4 decimal places. For the circuit below, determine the diode voltages VD1 and Vp2, diode currents Ip1 and Ip2, and voltage across the resistor, VRLIMIT- Use ideal model. Assume r'a (for both diodes)=200. Note D, is Germanium, D2 is Silicon, VBIAS = 14V and RLIMIT = 760 ohms . VD1 = Blank 1 V; VD2 = Blank 2 V; Ip1 = Blank 3 mA; ID2 = Blank 4 mA ; VRLIMIT = Blank 5 V ... Capture3.JPG +Vo1- +VRLIMIT- +V02- Io1 Io2 V BIAS

A full-wave bridge rectifier is to be designed to produce a peak output voltage of 10 V, deliver 100 mA to the load, and produce an output with a ripple of not more than 7.5 percent. Assume that the frequency of the source is 50 Hz, and that a constant drop voltage model with Vp = 0.7 V is t of used. D1 D2 vs(1) RL vz(?) D3 D4 Source Rectifier Load a) Calculate the needed value of the load resistor R1. 1 b) Calculate the peak value of the voltage source which should be used V (t). [ c) What will be the value of the ripple voltage V7 [ d) Calculate the value of the required capacitor C. [ e) Explain in your own words the difference between the output with and without using the capacitor in the circuit above.