Announcements Midterm Review session this Thursday in Cory 277 from 5pm 8pm Midterm 1 Next Tuesday in Dwinelle 145 from 12pm 1 30pm You are allowed on 8 x 11 cheat sheet front and back but must be hand written You are not permitted the use of a graphing calculator Past Midterms posted online 1st lab slot is cancelled next week Only attend your second lab slot For those of you that have your second lab slot on Tuesday the prelab is due at the end of the lab HW 3 online EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 1 Lecture 8 OUTLINE Review and examples 1st and 2nd Order Circuits Phasors Complex impedence Misc Problems EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 2 Equivalent inductance L1 L2 Leq L3 EE40 Summer 2006 Lecture 8 Zeq Instructor Octavian Florescu 3 Equivalent Capacitance and Voltage Division Ceq Vi C2 C1 C3 Zeq Vo Vo EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 4 Charge Sharing V1 C2 V2 C1 Vfinal EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 5 KCL KVL Solve for all the electrical characteristics EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 6 1st Order Circuit Example 1 i t 1F 1 Vo t Find Vo t knowing i t 2 3u t the unity step function using a source transformation Plot the Vo t i t Ecapacitor t How long does it take Vo t to reach 4V EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 7 1st Order Circuit Example 2 i t 1F 10 Vo t Find Vo t knowing i t 0 2 0 3u t Plot the Vo t i t Ecapacitor t How long does it take Vo t to reach 4V EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 8 One Last 1st Order Vo Find Vo t if V1 u t EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 9 2nd Order Circuit Example 1 i t C R L Vo t Find the damping factor and the natural frequency of this circuit EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 10 2nd Order Circuit Example 2 i t C R L Vo t i t 1 u t Acos ot Find Vo t knowing L 10uH C 1nF R 50 EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 11 Phasor Example i t Z C R L Vo t Find the total equivalent impedance Z of the circuit At what frequency is the impedance purely real EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 12 Complex Impedence Example 1 Z1 Z2 Vi t Vo t Find Vo j Vi j Knowing Z2 choose Z1 such that maximum power is delivered to the load EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 13 2nd Order Circuits R VS VC C L Find the Bode Plot for Vc Vs EE40 Summer 2006 Lecture 8 Instructor Octavian Florescu 14
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