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Related Concept Videos

MOS Capacitor01:25

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A Metal-Oxide-Semiconductor (MOS) capacitor is a fundamental structure used extensively in semiconductor device technology, particularly in the fabrication of integrated circuits and MOSFETs (metal-oxide-semiconductor field-effect transistors). The MOS capacitor consists of three layers: a metal gate, a dielectric oxide, and a semiconductor substrate.
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Design Example: Capacitance Multiplier Circuit01:20

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Dielectric Polarization in a Capacitor01:31

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The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
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Capacitors and Capacitance01:18

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A device consisting of two electrical conductors that are separated by a distance and used to store electrical charges is called a capacitor. The space between the conductors is either a vacuum or an insulating material, called a dielectric. Capacitors have many applications, ranging from filtering static from radio reception to energy storage in heart defibrillators.
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RC Circuits: Charging A Capacitor01:30

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A circuit containing resistance and capacitance is called an RC circuit. A capacitor is an electrical component that stores electric charge by storing energy in an electric field. Consider a simple RC circuit having a DC (direct current) voltage source ε, a resistor R, a capacitor C, and a two-way position switch. In the circuit, the capacitor can be charged or discharged depending on the position of the switch.
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RC Circuits: Discharging A Capacitor01:27

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One of the applications of an RC circuit is the relaxation oscillator. The relaxation oscillator comprises a voltage source, a capacitor, a resistor, and a neon lamp. The lamp acts like an open circuit (infinite resistance) until the potential difference across the neon lamp reaches a specific voltage. At that voltage, the lamp acts like a short circuit (zero resistance), and the capacitor discharges through the neon lamp and produces light. Once the capacitor is fully discharged through the...
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Modeling Biological Membranes with Circuit Boards and Measuring Electrical Signals in Axons: Student Laboratory Exercises
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Complex Dynamics in a Memcapacitor-Based Circuit.

Fang Yuan1, Yuxia Li1, Guangyi Wang2

  • 1College of Electrical Engineering and Automation, Shandong University of Science and Technology, Qingdao 266590, China.

Entropy (Basel, Switzerland)
|December 3, 2020
PubMed
Summary

This study introduces a novel memcapacitor model and circuit emulator, leading to a chaotic oscillator exhibiting extreme multistability and coexisting attractors. The system

Keywords:
chaoscircuit emulatorcomplex dynamicsextreme multistabilitymemcapacitor

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Area of Science:

  • Nonlinear Dynamics
  • Circuit Theory
  • Chaos Theory

Background:

  • Memcapacitor models are crucial for advanced electronic circuits.
  • Understanding chaotic systems requires robust modeling and analysis.
  • Multistability in chaotic systems offers potential for complex computations.

Purpose of the Study:

  • To propose a new memcapacitor model and its circuit emulator.
  • To design and investigate a chaotic oscillator based on the memcapacitor.
  • To analyze the complex dynamic characteristics, including multistability and bifurcations.

Main Methods:

  • Analytical investigation of system dynamics.
  • Experimental validation using circuit implementation.
  • Analysis of basins of attraction, Lyapunov exponents, and bifurcations.

Main Results:

  • A novel memcapacitor model and its circuit emulator were successfully developed.
  • The designed chaotic oscillator demonstrated extreme multistability and coexisting attractors.
  • Experimental results confirmed the analytical findings regarding system dynamics.

Conclusions:

  • The proposed memcapacitor model enables the creation of complex chaotic systems.
  • The investigated chaotic oscillator exhibits rich dynamical behaviors.
  • The circuit implementation validates the theoretical analysis and potential applications.