DAT|電子元素 Electronic Elements

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電阻器 Resistor

  • 限制電流流過,以保護電路的電器裝置
    Control or limit the current flowing through, protecting the devices from burning out
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可變電阻器 Variable Resistor

  • 限制電流流過,以保護電路的電器裝置
    Control or limit the current flowing through, protecting the devices from burning out
  • 電阻能夠調節
    Resistance is adjustable
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電容器 Capacitor

  • 儲存電荷,在需要時產生電流
    Stores electric charge, generate a current when required
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開關 Switch

  • 用於打開/關閉電路/改變電流路徑或電路
    Used for opening / closing a circuit / changing the current path or circuit
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二極管 Diode

  • 導通電流以單一方向流動/整流
    Control an electric current to flow in one direction / rectification
  • 電路符號上的箭頭指向電流流動的方向
    Arrow on the electric symbol points the direction in which the current flow
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晶體管 Transistor

  • 放大電壓信號
    Amplify voltage signals
  • 為高功率裝置提供更大的電流,例如馬達
    Function as a switch to provide larger currents for high power devices, such as motors
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發光二極管 LED

  • 電流可以單向流過 LED 並使其發光
    A current can flow through an LED in one direction and make it light up
  • LED 符號的箭頭需要指向外,並指向電流流向的方向
    The arrow on the LED symbol needs to point out and point to the direction the current is flowing
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Advantages

同一功率下,LED的耗電量較鎢絲燈/慳電膽低,可增加照明時間
LED can haveless power consumption than incandescent lamps/compact for the same unit of power, can increase lighting time

不易損壞,減少因震動帶來損壞
Not easy to be damaged, reduce damage caused by vibration

低壓電電流,安全性高
Much safer to use due to its low current and voltage


蜂鳴器 Buzzer

  • 電流通過時振動並發出聲音
    Vibrates and produces sound when an electric current passes through
  • 電壓或電流的頻率會影響產生的聲音
    The frequency of electric voltages or currents affects the sounds produced
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馬達 Motor

  • 將電能轉化為機械功
    Convert electric energy to mechanical work
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繼電器 Relay

  • 由小電流控制的開關
    A switch controlled by a small electric current
  • 將大電流轉向到電路的不同部分,以控制高能量電器
    Switches large currents to different portions of an electric circuit to control high-energy electrical appliances
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電池 Battery

  • 儲存化學能並將其轉化為電能
    Stores chemical energy and converts it to electrical energy
  • 電流由正極(長線)開始流出
    Current flows from the positive pole (long line)
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發電機 Generator

  • 產生電流
    Produce current
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– 迴享 Recurso

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