midterm 2S2009

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

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

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

View Full Document
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

## This note was uploaded on 12/13/2009 for the course EE 331 taught by Professor Donthavemyschool during the Spring '09 term at Vermont Tech.

### 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
Ask a homework question - tutors are online