120 likes | 249 Vues
In Lecture Set #8 by Dr. Han Le of the ECE Department, learn about phasors and their application in analyzing time-varying circuits and signals. The lecture covers essential mathematical techniques such as harmonic functions, complex analysis, and Fourier analysis. Phasors serve as valuable tools for simplifying the study of AC circuits, making complex problems more manageable. This lecture provides a foundational understanding to leverage mathematical tools effectively for real-world circuit applications, signal processing, and ensuring successful circuit design.
E N D
ECE 3336 Introduction to Circuits & Electronics Lecture Set #8 Method for Linear Circuit: Phasor Part 1: Background Dr. Han Le ECE Dept.
Note: The main lecture is in the Mathematica file – this is only for basic discussion Phasors: AC Circuits – Background Concepts
Outline • Time-varying circuits and signals • Introduction to mathematical techniques: • Harmonic functions • Complex analysis • Fourier analysis and transform • Phasors • Applications of mathematical techniques to physical problems and circuits
It is more natural to have time-varying signals & circuits than time-constant circuits
Mathematical tools and techniques • Certain mathematical tools and techniques are highly useful for certain types of problems • For NVM and MCM, linear algebra (the math principle) and matrix (the tool) is highly useful • For time-varying signals and AC circuits, it will be Fourier transform (the math principle) and phasor (the tool) • Again, it is important to use the tool rather than get lost or tangled with the tool
So, phasor is worth learning because it makes things so easy
Outline • Time-varying circuits and signals • Introduction to mathematical techniques: • Harmonic functions • Complex analysis • Fourier analysis and transform • Phasors • Applications of mathematical techniques to physical problems and circuits
Harmonic function Fourier transform Phasors Complex numbers &analysis
Outline • Time-varying circuits and signals • Introduction to mathematical techniques: • Harmonic functions • Complex analysis • Phasors • Fourier analysis and transform • Applications of mathematical techniques to physical problems and circuits
Applications of mathematical techniques Harmonic function Fourier transform • Signal and AC circuit problems • RLC or any time-varying linear circuits. Applicable to linear portion of circuits that include nonlinear elements • Signal processing • signal analysis (spectral decomposition) • filtering, conditioning (inc amplification) • synthesizing Phasors Complex number &analysis