Midterm 2S - W EE—331 Devices and Circuits I Instructor...

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Unformatted text preview: W EE—331 Devices and Circuits I Instructor: Tali—Chang Chen Midterm #2 12:30 - 01:20 pm 05/19 Tues. Name: 3 o‘wx‘fion Student Number: WW—MW—Wmm Problem 1: Multiple Diode Analysis [32 points] Find the Q-points for the diodes using CVD (V0n=0.75 V) mode]. @440" Q D1=OM. DZDM- D3 DR? D4» 0N. “07'3"0- ‘3‘ a In: #— 7 Mam/4A 10%” 22K .._ U"“°~7‘§+Q iox~Ipf1g=34mA~~—l *3“ 1B51UV*NQwa43K)~o =L9Q—MA- 2-. H3.-T2.V. ms Q 18%MA,0.79 v) Dz= ( 34mm, W; v). Problem 2: F all-wave rectifier with DC-DC zener regulator analysis (35 points) From the figure, peak voltage of Vs is 12 V; the operation frequency is 60 Hz” R = 1 k9, the on- voltage of D1 and D2 is 0.5 V, and the Zener voltage of D3 is 11.2 V. (3) Draw the dc voltage at V1 vs. time. (Show the Vma-x and Vmin using VON and Vr) [1.0 points] (b) The design required stable output voltage V0 = 11.2 V, what is your selection of the value of C (10 uF or 1000 uF)? [10 points} Vwm‘ln 2 ms—W 7 W2. Vr40.%V- T . 12~0-§_w fl. C>"o"" “MCI/MF— 3 7.2. YTC‘K a 100° MF— . (0) Based on your selection, what fraction of the cycle does the diode conduct? [10 points] Md;— W: 2.94 'T '1‘ °“°0l';8V‘ El: .LlZ'VY _'. 0 DZ _ o 7 ml"??? '" ‘ ‘2 /D- (d) Based on your selection, what is the peak diode current? [5 points] . _ Hi? 3: 1v~T‘AT = 0.:75 MP. Problem 3: MOSFET Analysis [33 points] The NMOS transistor have VTN : 1 V, unCOX = 120 uA/VZ, K = 0, and LIZLZ=1 um. Find (a) the required values of gate width (W) for each of M1 and M2, and (b) the value R, to obtain the voltage and current values indicated. (c) If replacing resistor with a transistor M3 without changing current and voltage, find the W/LofM3 WW 1 K00 M1 and M2, cry-Mo.ng act gfihuk—t-fm_ 0.“..0 Vast-:ZV wvasz=3v >VTA:[\} (Loyd/E w I [lo/MA -.-. LEEMA/Vz~ )L'kl‘m‘~v-rm) #n—o—vrc Lgv :- M2. :99; £2 '2 W\‘L 1’1) H i"? W :2Mm W1. '2. Ml — \Q-OMA: moMA/VL thikgfl3 t« T ,_ ; N1 «=_ (15‘ NM Up) ._ A? R: 01 h 335.3SKD— 0&2 kc). “We = tum/cw: K..th )L omit 2 La W3 ...
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This note was uploaded on 02/28/2010 for the course EE 331 taught by Professor Taicheng during the Spring '08 term at University of Washington.

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Midterm 2S - W EE—331 Devices and Circuits I Instructor...

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