电子学三字经(五)

• 作 者: 王明臣
• 出 处: 少年电世界
• 发表日期: 2004年期
• 关键词: 电感器 直流电流 高频电流 初级电压 塑料外壳 半导体管 负载电阻 电压降 半导体材料 圈数

高频阻直流通欲振荡配电容如前所述,电感器(电感线圈)对直流电流的阻力很小,近于零,因此直流电流很容易通过电感器。然而它对高频电流的阻力(一般叫电感抗)却很大,所以高频电流被阻挡在门外,难以通过,此特点刚好与电容器的特点相反。由于电容器可储存电能,而电感器可储存磁能。如果把电容器和电感器组合在一起,接

High-frequency DC resistance to pass oscillation with capacitor As mentioned earlier, the inductor (inductor) on the DC resistance is very small, close to zero, so the DC current is very easy to pass through the inductor. However, its resistance to high-frequency current (usually called inductive reactance) is very large, so high-frequency current is blocked in the door, difficult to pass, this feature is exactly the opposite of the characteristics of the capacitor. Because the capacitor can store electric energy, the inductor can store the magnetic energy. If the capacitor and inductor together, then