midterm 2S2009

midterm 2S2009 - m EE—331 Devices and Circuits I...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Background image of page 1

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

View Full DocumentRight Arrow Icon
Background image of page 2
Background image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: m EE—331 Devices and Circuits I Instructor: Tani—Chang Chen Midterm #2 Name; ‘ Student Number: m 02:30-03:20pm 11/23/2009 Problem 1: [20 points} In each of the ideal-diode circuits shown below, V, is a 1-kHz, 10V peak triangular wave. Sketch the waveform resulting at V0. What are its positive and negative peak values? [A; 10 points] 01 VI D2 [3; 10 points} +15V 1 mA V0 1 kn D1 02 VI mine-n Vin>0. D; 0?? DZ 0“ Voxiv,. when Vim“). view “02%? Vo=V1n+iV- Problem 2: [20 points] Consider a half-wave peak rectifier fed with a voltage Vs having a triangular waveform with 20 V peak-to-peak amplitude, zero average, and 1 kHz frequency. Assume that the diode has a 0.7 V drop when conducting. The load resistance R = 1009 and the filter capacitor C = 100 pF. [A; 5 points] Sketch the waveform resulting at V0. What are its positive and negative peak values? [8; 8 points} Find the ripple voltage Vr? _ (V “Von” T __l_ n. l \lr—“—P—P~—” a T'f‘tboo _ ' own“ I ' “2—” 3') FLT“ 0w“ ~_- one v, [00 “)qu [C; 7 points] Calculate the time interval during which the diode conducts. Problem 3: Biasing MOS-FETanalysis [30 points] Consider the MOSFET M1 and M2 shown in the circuit below has the following parameters: {VTO = VI KnJ = W1 = 8 pm, L1 = L2 = “In, A. =0, 'Y = 0.53/1”, and 2¢F = VDD = VDD = +3 V +3 V (a) Find the value of R required establishing a current of 0.2 mA in M1. [15 points] M i : Sa‘lvwafiiw : r 235)“ la 1 up: 2" H m- I "~72 zxiows h 7. 0 fl- M“ = 2 L “as “\fm) \fw =°~ (b) Find W2 and R2 so that M2 operates in the triode region with in = 0.2 mA and low output Vo = 0.25V. [15 points] ’U‘mszlm t; v. LM '2), x : ‘a-3_ «~4— LUz "Ups \ v a}. x10 - 2‘10 ( L9. ) L ’U'cxsrvw “‘7 313% 3 W; =5 qsgq‘Mm. -‘l‘zl; {Zn—Lumzi'é-Q-kfim Z Ou'LMlj-s 7 ...
View Full Document

Page1 / 3

midterm 2S2009 - m EE—331 Devices and Circuits I...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online