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Related Concept Videos

Types Of Transformers01:16

Types Of Transformers

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Transformers can provide desired voltages to a circuit by modifying the number of turns in the secondary windings.
If the ratio of the number of turns in the secondary winding to that of the primary winding is greater than one, then the transformer is said to be a step-up transformer. In a step-up transformer, the voltage at the secondary winding is greater than the voltage applied at the primary winding.
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Oscillations In An LC Circuit01:30

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An idealized LC circuit of zero resistance can oscillate without any source of emf by shifting the energy stored in the circuit between the electric and magnetic fields. In such an LC circuit, if the capacitor contains a charge q before the switch is closed, then all the energy of the circuit is initially stored in the electric field of the capacitor. This energy is given by
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Equivalent Circuits for Practical Transformers01:28

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The practical equivalent circuits of single-phase two-winding transformers exhibit significant deviations from their idealized versions due to the inherent properties of winding resistance and finite core permeability. These properties result in real and reactive power losses, affecting the transformer's performance. Understanding these deviations is crucial for designing more efficient transformers.
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Three-Winding Transformers01:19

Three-Winding Transformers

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Three identical single-phase transformers can be configured to form a three-phase transformer connection, which involves high-voltage and low-voltage windings. The high-voltage windings are denoted by capital letters A-B-C, while the low-voltage windings are labeled with lowercase letters a-b-c, representing their respective phases. This notation helps distinguish between the high and low voltage sides of the transformer.
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The Ideal Transformer01:26

The Ideal Transformer

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In single-phase two-winding transformers, two windings are coiled around a magnetic core characterized by cross-sectional area A and magnetic permeability μ. A phasor current i1 enters the left winding while i2 exits the right winding, establishing the fundamental working of the transformer through electromagnetic principles.
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RLC Circuit as a Damped Oscillator01:30

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An RLC circuit combines a resistor, inductor, and capacitor, connected in a series or parallel combination.
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Updated: Dec 17, 2025

Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication
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Synthetic, Multi-Layer, Self-Oscillating Vocal Fold Model Fabrication

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Multimode Self-Oscillating Vesicle Transformers.

Qing Shao1,2, Shaodong Zhang2, Zhen Hu1

  • 1School of Chemistry and Chemical Engineering, MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, Harbin Institute of Technology, Harbin, 150001, China.

Angewandte Chemie (International Ed. in English)
|June 25, 2020
PubMed
Summary
This summary is machine-generated.

Researchers engineered a novel synthetic vesicle capable of complex, multi-mode shape oscillations, mimicking natural cell behavior. This breakthrough offers greater control and amplitude in synthetic oscillatory systems.

Keywords:
copolymersmaterials chemistryrutheniumself-assemblyvesicles

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Area of Science:

  • Materials Science
  • Chemical Engineering
  • Biomimetic Systems

Background:

  • Mimicking the rhythmic oscillatory behavior of living cells with synthetic materials remains a significant scientific challenge.
  • Existing synthetic model systems lack the sophisticated oscillatory modes and amplitudes found in nature.

Purpose of the Study:

  • To develop a novel synthetic material system that exhibits complex, multi-mode shape oscillations.
  • To approach the oscillatory capabilities of natural cells in synthetic systems.

Main Methods:

  • Engineering a novel alternating copolymer vesicle.
  • Utilizing the Belousov-Zhabotinsky oscillatory reaction to drive vesicle dynamics.
  • Controlling oscillations via polymer concentrations.

Main Results:

  • The synthetic vesicle demonstrated drastic and multi-mode shape oscillations in real time, including swelling/deswelling, twisting/detwisting, stretching/shrinking, fusion/fission, and multiple division.
  • Novel fission oscillations were observed.
  • The oscillation magnitude, particularly in diameter, significantly exceeded previously reported self-oscillating vesicles.

Conclusions:

  • The developed self-oscillating vesicle transformer significantly advances synthetic membrane deformation complexity and capacity.
  • This system approaches the capabilities of natural cellular oscillations, opening new avenues in biomimetic materials engineering.