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Electrical Power01:07

Electrical Power

Electric power is the product of current and voltage, represented in units of joules per second, or watts. For example, cars often have one or more auxiliary power outlets with which you can charge a cell phone or other electronic devices. These outlets may be rated at 20 amps and 12 volts, so that the circuit can deliver a maximum power of 240 watts. Consider a 25 Watt bulb and a 60 Watt bulb. The conversion of electrical energy produces heat and light, while the kinetic energy lost by the...
Conservation of AC Power01:15

Conservation of AC Power

The principle of power preservation is applicable to both ac and dc circuits. This principle, when applied to AC power, asserts that the complex, real, and reactive powers produced by the source are equal to the total complex, real, and reactive powers absorbed by the loads. When two load impedances are connected in parallel to an ac source V, the complex power provided by the source can be calculated using the relation
Electrical Transport01:29

Electrical Transport

The electrical transport property of a material is defined by its resistance and conductivity. Resistance is the measure of a material's ability to resist the flow of electric current, while conductivity gauges its ability to allow the current to pass through, depending on the geometry of the measurement cell, such as electrode spacing and area. Conductivity is measured in Siemens (S). There are different types of conductance, including specific conductance, equivalent conductance, and molar...
Power System Distribution01:25

Power System Distribution

Power system distribution involves delivering electrical energy from power plants to consumers through a network of transmission and distribution systems. The process begins at power plants, where energy from coal, gas, nuclear, water, and wind is converted into electrical energy. These plants use three-phase generators, typically rated between 50 to 1300 MVA, with terminal voltages ranging from a few kV to 20 kV, depending on the size and age of the units.
The transmission system is designed...
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
Reclosers and Fuses01:26

Reclosers and Fuses

Automatic circuit reclosers enhance the protection of distribution circuits by interrupting and auto-reclosing an AC circuit according to a preset sequence. They effectively manage temporary faults on overhead distribution lines, often caused by tree limbs or wildlife, by briefly disrupting service to improve overall reliability. However, contact with reclosers or energized broken conductors on the ground can pose serious hazards.
A comprehensive protection scheme for radial distribution...

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関連する実験動画

Updated: Jul 1, 2026

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
07:51

Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

Published on: August 27, 2019

鉄道電力の思い出

J F Scott, C A Paz de Araujo

    Science (New York, N.Y.)
    |December 15, 1989
    PubMed
    まとめ
    この要約は機械生成です。

    シリコンで製造された新しい鉄電気ランダムアクセスメモリ (FeRAM) は,高速,密度,および非揮発性を提供します. これらの進歩は,以前の問題に対処し,FeRAMをメモリアプリケーションで広く採用できるように位置づけています.

    さらに関連する動画

    Electric and Magnetic Field Devices for Stimulation of Biological Tissues
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    Electric and Magnetic Field Devices for Stimulation of Biological Tissues

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    Comparative Study of Simulation of Temperature Rise in Ring Main Unit
    04:35

    Comparative Study of Simulation of Temperature Rise in Ring Main Unit

    Published on: July 5, 2024

    関連する実験動画

    Last Updated: Jul 1, 2026

    Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs
    07:51

    Method for Recording Broadband High Resolution Emission Spectra of Laboratory Lightning Arcs

    Published on: August 27, 2019

    Electric and Magnetic Field Devices for Stimulation of Biological Tissues
    13:29

    Electric and Magnetic Field Devices for Stimulation of Biological Tissues

    Published on: May 15, 2021

    Comparative Study of Simulation of Temperature Rise in Ring Main Unit
    04:35

    Comparative Study of Simulation of Temperature Rise in Ring Main Unit

    Published on: July 5, 2024

    科学分野:

    • マテリアルサイエンス 材料科学
    • 電気工学 電気工学とは
    • 固体物理 固体物理学

    背景:

    • フェロ電気薄膜メモリは,標準のシリコン集積回路に組み込めるようになった.
    • この統合により,高速,高密度,非揮発性の組み合わせが可能になります.
    • 以前の鉄電気メモリ技術の限界は,広範な採用の障壁でした.

    研究 の 目的:

    • 新しく製造されたシリコン上の鉄電気薄膜メモリの機能を詳細に説明する.
    • 基礎となるスイッチング運動と信頼性の向上を説明する.
    • これらのメモリが既存のメモリテクノロジーを置き換える可能性を強調する.

    主な方法:

    • 標準のシリコン集積回路にフェロ電気薄膜 (100~300 nm) を製造する.
    • スピード,密度,および電力要件を含むメモリパフォーマンスの特徴.
    • アクティベーションフィールドの依存性,適用されたフィールド,および温度に基づいたスイッチング運動学の分析.
    • 疲労と保持障害のメカニズムの調査と改善.

    主要な成果:

    • 標準の5ボルトのシリコンロジックレベルでの30ナノ秒の読み取り/消去/書き換え操作を達成しました.
    • 2x2マイクロメートルのセルサイズで非常に高いメモリ密度を示した.
    • スタンバイ電源を必要としない完全な非揮発性を確認しました.
    • よく理解されているスイッチング運動モデルを確立し,疲労/保持特性を許容可能なレベルまで改善しました.
    • 極端な放射線硬さを示した.

    結論:

    • シリコンで製造された鉄電気ランダムアクセスメモリ (FeRAM) は,メモリ技術の重要な進歩を表しています.
    • 実証された性能と信頼性は,FeRAMを磁気コア,磁気バブル,および電気的に消去可能な読み込み専用メモリを置き換える強力な候補にしています.
    • スイッチング動力学と故障メカニズムのさらなる理解と改善は,実用的な応用への道を開きました.