EET 300 Lecture Notes - Lecture 6: Reggiane Re.2000, Multiplication Operator, 5.8S Ribosomal Rna

• School: Old Dominion University
• Department: Electrical Engineering Technology
• Course: EET 300
• Professor: Jones

Document Summary

Remember that the assumed directions for voltage and current imply whether or not power is absorbed or delivered. Remember that capacitive current is proportional to the rate of change of the voltage across the capacitor. Based on this definition it should be obvious that if the voltage doesn"t change, there can"t be any current. Figure 11 voltage changes, the larger the current thru the capacitor. i(t) When you"re determining the voltage across the capacitor, you have to take into account the past history of the capacitor. We normally take the history up to time = 0 as the initial charge, vo. This initial charge can be added into the circuit model as shown in. If vo = 0, the capacitor is known to be relaxed or uncharged. If v0 0, the capacitor is said to be initially charged to vo. We can determine the instantaneous power p(t) to be: p(t) v(t)i(t)