ECE302_hw8_Solution

ECE302_hw8_Solution - NC State University Department of...

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NC State University Department of Electrical and Computer Engineering Problem Set 8 Solutions ECE-302 spring 2005 Due: Monday, April 4 th in class H&S Chap. 7 P7.13
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IC vs VCE -0.00015 -0.0001 -0.00005 0 0.00005 0.0001 0.00015 0 0.5 1 1.5 2 2.5 3 3.5 VCE (V) IC (A) VBE=660mV VBE=680mV VBE=700mV VBE=720mV From Graph: () V mA v i g C BE I V be c m 046 2 . , = From Equation V mA V A V I g th C m 857 1 026 0 10 828 4 5 . . . = × = = P7.18 (a) For the MOSFET V mA A m m V A I L W C g D ox n MOSFET m / . / _ 5 0 125 3 30 100 2 2 2 = × × × = = µ For BJT th C V V th S I V be c BJT m V I e V I v i g th BE C BE = = = , _ MOSFET m BJT m g g _ _ = then V mA g V I g MOSFET m th C BJT m / . _ _ 5 0 = = = A mA V mA V V mA V I th C 13 013 0 5 0 026 0 5 0 = = × = × = . / . . / .
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(b) For MOSFET, from (a) A V V m m V A V V L W C I Tn GS Tn GS ox n D µ 125 3 30 100 2 1 2 1 2 2 2 = × × = = ) ( / ) ( V V V Tn GS 5 0 . = () V mA
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This note was uploaded on 03/30/2008 for the course ECE 302 taught by Professor Barlage during the Spring '07 term at N.C. State.

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ECE302_hw8_Solution - NC State University Department of...

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