ECE474S09_Lecture33 - ECE 474 Principles of Electronic...

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Unformatted text preview: ECE 474: Principles of Electronic Devices Prof. Virginia Ayres Electrical & Computer Engineering Michigan State University [email protected] Lecture 33: Chp. 05: Current State-of-Art Transistors Introduction to pn junctions pn junction no battery: No battery V0: OFF Calculate V0 (3 ways!) Calculate maximum E-field E0 Calculate depletion region width W (xp0, xn0) pn junction with battery: Diode Battery in Forward bias Vf : ON Battery in Reverse bias Vr : really good OFF Capacitances in pn junction: serious limitation Junction capacitance (Charge storage capacitance) Currents inside a pn junction +V f -V r I Lecture 33: Chp. 05: Current State-of-Art Transistors Introduction to pn junctions pn junction no battery: No battery V0: OFF Calculate V0 (3 ways!) Calculate maximum E-field E0 Calculate depletion region width W (xp0, xn0) pn junction with battery: Diode Battery in Forward bias Vf : ON Battery in Reverse bias Vr : really good OFF...
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ECE474S09_Lecture33 - ECE 474 Principles of Electronic...

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