Info icon This preview shows pages 1–2. Sign up to view the full content.

UNIVERSITY OF CALIFORNIA AT BERKELEY College of Engineering Dept. of Electrical Engineering and Computer Sciences Problem Set #3 Due Tuesday, February 14, 2006. EE 105 Spring 2006 1. The charge distribution in an IC structure is shown in Fig. 1. a. Find the numerical value of the surface charge Q so that the total charge is zero in the structure. Note that the units of Q are C/cm 2 . b. Plot the electric field E(x) through the structure. c. Sketch the potential φ (x), given that the potential
Image of page 1

Info icon This preview has intentionally blurred sections. Sign up to view the full version.

Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: φ (+/-3000) = 0. Figure 1. 2. Fig. 2 shows a circuit for charging a 12V battery. Assume that the forward conducting diode exhibits a constant voltage drop Vd=0.7V. a. If vs is a sinusoid with 24V peak amplitude, find the fraction of each cycle during which the diode conducts. b. Find the peak value of the diode current and the maximum reverse-bias voltage that appears across the diode. Figure 2. 3. A MOS capacitor has an n+ polysilicon gate, a 450 Angstrom thick gate oxide, and an n-type substrate with donor concentration Nd=7.5x10 16 cm-3 . a. If the gate charge is Qg = 2x10-7 C/cm 2 , sketch the charge density through the MOS capacitor. b. For the gate charge in part a), what is the gate-bulk bias V GB ?...
View Full Document

  • Spring '06
  • MingWu
  • Computer Science, Electrical Engineering, Electric charge, Fundamental physics concepts, n+ polysilicon gate, Gate Charge, BERKELEY College of Engineering Dept. of Electrical Engineering and Computer Sciences, forward conducting diode

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern