Lecture

Thevenin Equivalent Circuits: Impedance and Filters

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In course

ME-412: Experimental methods in engineering mechanics

This course gives an advanced treatment of experimental methods in the context of mechanics by way of example. Students will construct significant components of experimental apparatus, use their apparatus to collect data, interpret the resulting data, and ...

Description

This lecture covers Thevenin equivalent circuits, A/C and oscillatory signals, generalized impedance, capacitors, and filters. It starts by explaining how to find an equivalent circuit with a voltage source and a resistance for any two nodes in a linear circuit. Then, it revisits the voltage divider concept and introduces the Thevenin equivalent circuit and output impedance. The lecture proceeds to discuss reactive circuit elements, focusing on capacitors and their transient responses. It delves into the concept of impedance, reactance, and generalized impedance for capacitors. Finally, it explores frequency-dependent responses and filter devices, such as low-pass, high-pass, and band-pass filters.

Instructor

John Martin Kolinski

Dr. Kolinski studied Applied Mathematics (Sc.M.) and Applied Physics (Ph.D.) at Harvard University, completing a PhD under the supervision of L. Mahadevan and Shmuel Rubinstein on the role of air in droplet impact. John did his post-doc at the Hebrew University of Jerusalem in Israel supported by the Fulbright post-doctoral fellowship. At HUJI, he worked on interfacial instabilities in soft matter in the labs of Eran Sharon and Jay Fineberg. John continues his research into interfacial mechanics at EPFL in EMSI, his newly founded laboratory for the study of Engineering Mechanics of Soft Interfaces.

Official source

Ontological neighbourhood

Physics

Electromagnetism: Electrical networks

Related concepts (32)

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Electronic filter

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Thévenin's theorem

As originally stated in terms of direct-current resistive circuits only, Thévenin's theorem states that "Any linear electrical network containing only voltage sources, current sources and resistances can be replaced at terminals A–B by an equivalent combination of a voltage source Vth in a series connection with a resistance Rth." The equivalent voltage Vth is the voltage obtained at terminals A–B of the network with terminals A–B open circuited.

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