The most professional manufacturer of shielded power inductors in China

As we all know, WURTH is the most professional manufacturer of electronic components in the world. Do you know that there are professional and large-scale inductor manufacturers in China?

In China, there are many large and small manufacturers of electronic components, among which FKS CoilS is a high-tech enterprise integrating R&D, manufacturing and trade. We have 15 years of professional R&D and manufacturing experience in the field of transformers, inductors, sensors, chokes, coils and other magnetic components. FKS CoilS produces hundreds of high-quality inductors, mainly divided into shielded power inductors, unshielded power inductors, high voltage power inductors, coupled power inductors and so on.

Today we will first understand the relevant knowledge of shielded power inductors, so what is shielded power inductors?

Magnetically shielded inductors minimize EMI while balancing small size with low DCR and high current rating. Ideal as a power supply choke for eliminating noise in power supplies in automotive, commercial, industrial and high reliability designs.

The shielded power inductor designed by FKS CoilS has a special gold-plated electrode end face, which is reliable in welding and easy to install on the flat bottom surface; the design of the closed magnetic circuit makes it have the characteristics of low magnetic leakage, low current resistance, and high current resistance, and is widely used in power supplies. Choke coils for eliminating noise in power supplies in automotive, commercial, industrial, and high-reliability designs.

Power inductors are divided into two types with magnetic cover and without magnetic cover, mainly composed of magnetic core and copper wire. It mainly plays the role of filtering and oscillation in the circuit.

The peak-to-peak ripple generated by the chip inductor is just over 12mv. The peak current charges the output capacitor and supplies the load current. Larger currents will flow into and out of the capacitor, which will result in higher output voltage ripple. SMD inductors are mostly used in power supply filter circuits. Inductors are energy storage components that focus on suppressing conductive interference; SMD inductors will use a large number of inductive components and EMI filter components in the PCB board circuit of electronic equipment. In the resonant circuit, the inductor must have high Q, narrow inductance deviation, and stable temperature coefficient, so as to meet the requirements of narrow band and low frequency temperature drift of the resonant circuit. High-Q circuits have sharp resonant peaks.

(1) Blocking effect: The self-induced electromotive force in the coil always opposes the current change in the coil. It can be mainly divided into high frequency choke coil and low frequency choke coil.

(2) Tuning and frequency selection function: the inductance coil and the capacitor are connected in parallel to form an LC tuning circuit. That is, the natural oscillation frequency f0 of the circuit is equal to the frequency f of the non-AC signal, and the inductive reactance and capacitive reactance of the circuit are also equal, so the electromagnetic energy oscillates back and forth between the inductance and capacitance, which is the resonance phenomenon of the LC circuit. When resonating, because the inductive reactance and capacitive reactance of the circuit are equivalent and reversed, the inductive reactance of the total loop current is the smallest and the current is the largest (referring to the AC signal of f=f0), so the LC resonant circuit has the function of selecting the frequency and can An AC signal of a certain frequency f is selected.

When you use FKS COILS you can be assured that every product is manufactured to the highest quality standards; our facility is fully ISO compliant.

To learn more about good quality shielded power inductors, please contact us directly.