电路与电子技术课件（英文版）-第五章.pptxVIP

NODE and MESH ANALYSIS with CONTROLLED SOURCESThe methods just described also apply, with relatively minor modifications, in the presence of dependent (controlled) sources. Solution methods that allow for the presence of controlled sources are particularly useful in the study of transistor amplifiers… NODE and MESH ANALYSIS with CONTROLLED SOURCESDetermine the voltage “gain” Av = v2/v1 in the circuit of Figure NODE and MESH ANALYSIS with CONTROLLED SOURCESMore Examples: on Whiteboard…. NODE and MESH ANALYSIS with CONTROLLED SOURCESFind the node voltages in the circuit of FigureKnown Quantities: Source current; resistor values; dependent voltage source relationship.Find: Unknown node voltage v. NODE and MESH ANALYSIS with CONTROLLED SOURCESFind the node voltages in the circuit of Figure THE PRINCIPLE OF SUPERPOSITIONAnalysis of linear circuits.A precise analysis technique, such as the mesh current and node voltage methods How we can handle multiple sources effectively? THE PRINCIPLE OF SUPERPOSITION How we can handle multiple sources effectively? The principle of superposition is a conceptual aid that can be very useful in visualizing the behavior of a circuit containing multiple sources. THE PRINCIPLE OF SUPERPOSITIONSuperposition is for visualizing the behavior of a circuit containing multiple sources.In a linear circuit containing N sources, each branch voltage and current is the sum of N voltages and currents, each of which may be computed by setting all but one source equal to zero and solving the circuit containing that single source. THE PRINCIPLE OF SUPERPOSITIONThe circuit of Figure is more formally analyzed as follows. The current i flowing in the circuit on the left-hand side of Figure may be expressed as THE PRINCIPLE OF SUPERPOSITIONThe circuit of Figure is more formally analyzed as follows. The current i flowing in the circuit on the left-hand side of Figure may be expressed as THE PRINCIPLE OF SUPERPOSITION THE PRINCIPLE OF SUPERPOSITIONThe figure