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What is the role of the inductor in the power adapter?

Issue Time:2006-12-28
Inductors are components that can convert electrical energy into magnetic energy and are also an important component in the power adapter. So what role does the inductor play in the power supply? Then the power adapter manufacturer will simply Let me introduce it.

Basic functions: filtering, oscillation, delay, notching, etc.

The image said: "through DC, blocking communication."

Detailed explanation: In the electronic circuit, the inductor coil acts on the AC finite current, and it can form a high-pass or low-pass filter, a phase shift circuit and a resonant circuit with a resistor or a capacitor; the transformer can be AC-coupled, transformed, and changed. Flow and impedance transformations, etc. It is known from the inductive reactance XL=2πfL that the larger the inductance L is, the higher the frequency f is, and the larger the inductive reactance is. The magnitude of the voltage across the inductor is proportional to the inductance L and is also proportional to the current change rate Δi/Δt.

The inductor coil is also an energy storage component that stores electrical energy in the form of magnets. The amount of stored energy can be expressed as: WL = 1/2 Li2. It can be seen that the larger the inductance of the coil, the larger the flow, and the more energy is stored. The most common function of the inductor in the circuit is to form an LC filter circuit together with the capacitor.

The power adapter can be said that the sparrow is small and complete, and every component inside the power supply has its specific function. The knowledge about the inductance is here. Want to know more about the power supply, welcome to pay attention to Shenzhen Lianyunda Electronics.

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