ideal inductor การใช้

• Physical capacitors are often much closer to " ideal capacitors " than physical inductors are to " ideal inductors ".
• An ideal inductor is a device whose voltage depends on the " change in current " which " flows " through it.
• Specifically, an ideal inductor ( with no resistance ) will cause the current to lag the voltage by a quarter cycle, or 90?
• An ideal resistor has zero reactance, whereas ideal inductors and capacitors have zero resistance & ndash; that is, respond to current only by reactance.
• The desired effect is an impedance of the form of an ideal inductor " L " with a series resistance " R L ":
• For an ideal inductor in an AC circuit, the inhibitive effect on change in current flow results in a delay, or a phase shift, of the alternating current with respect to alternating voltage.
• Because of this, a synthesized inductor realized with a gyrator and a capacitor may, for certain applications, be closer to an " ideal inductor " than any ( practical ) physical inductor can be.
• Save for quality factor, or Q factor, is specified to describe an inductor's performance based on its inductance relative to its internal resistance . ( For your own curiosity, it's worth noting that one can simulate a near-ideal inductor using a combination of active components & mdash; see gyrator . ) Now, whether you need to " account " for that resistance depends on the specific situation & mdash; and on your teacher.