Toroidal Choke Power Inductor

Soft magnetic inductance is an electronic component, mainly by the circular magnetic core, on iron powder, ferrite, around it, or other materials wire to do a horn inductance. Longitudinal field coils are used in a wide range of applications, such as high-frequency coils and transformers. Soft magnetic inductors can have higher q factor and higher inductance structure than the same electromagnetic coil. This is largely because smaller winding Numbers are required to provide a closed core magnetic path. This magnetic flux is confined to the core at a high permeability, confinement consumes less energy and can be absorbed into nearby objects, so the toroidal coil provides some core. The geometric direction of magnetic flux is the center of the threaded ring, while the direction of soft magnetic flux is parallel to the core of the ring.

Product Details

Super toroidal choke power inductor customized

the one of the biggest professional factory of toroidal choke power inductor in China-Feineng

Quick Details

Place of origin:Guangdong,China 

Brand Name:Feleng

Model Number:10626

Coil material:Copper


Application:networks/switching and auto

Wire:100% Copper Wire


Current Range:10A-200A

Business type:Manufacturer

Packing:Shipped within 5 days after payment



Packaging &Delivery

Packaging Details

Standard export carton

Delivery Time

Shipped winthin 5 days after pay

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The toroidal choke power inductor with seputm,glue , expory plate pedestal, size, inductance ,core material etc. 



Tips: Inductance coil use and differentiation

The purpose of the inductor coil is divided into three types, turbulence, filtering, and oscillation.

First, turbulence: used in low-frequency circuits to block low-frequency alternating current; pulsating direct current to pure DC circuits; it is commonly used in the middle of two filter capacitors at the output of the rectifier circuit, and the choke and capacitor form a 滤波-type filter circuit. In high-frequency circuits: high-frequency chokes in old-fashioned regenerative radios that prevent high-frequency currents from flowing to the low-frequency end;

Second, the filter: the same as the above theory; also prevents the pulsating DC current flowing after rectification to the pure DC circuit by the choke (to simplify the circuit, reduce the cost, replace the choke with pure resistance) two capacitors (electrolytic capacitor) Filter circuit. The capacitor is charged and discharged, and the choke is connected to the direct current to block the alternating current characteristics to complete the smooth direct current to obtain pure direct current.

Concussion: We say that rectification is to convert alternating current into direct current, then shock is the reverse process of turning direct current into alternating current. We call the circuit that completes this process an "oscillator." The waveform of the oscillator: positively swirling, sawtooth, trapezoidal, square, rectangular, and spike. The frequency is from a few HZ-several GHZ. In the field of cable and radio, the field of radio is very widely used.

In a circuit, when a current flows through a conductor, an electromagnetic field is generated. The magnitude of the electromagnetic field divided by the magnitude of the current is the inductance.

The inductance is defined as L = phi / i, the unit is Weber. Inductance is a physical quantity that measures the ability of the coil to generate electromagnetic induction. When a current is applied to a coil, a magnetic field is generated around the coil, and the coil has a magnetic flux. The larger the power supply to the coil, the stronger the magnetic field and the greater the magnetic flux through the coil. Experiments have shown that the magnetic flux through the coil is proportional to the current flowing in, and their ratio is called the self-inductance coefficient, also called inductance. If the magnetic flux passing through the coil is represented by φ, the current is represented by I, and the inductance is represented by L, then L = φ/I

The unit of inductance is heng (H), which is also commonly used in units of millihenry (mH) or microhenry (uH). 1H = 1000 mH, 1H = 1000000 uH. The inductor can only act on the unstable constant current. Its characteristic voltage is proportional to the instantaneous rate of change (derivative) through its current. The proportional coefficient is the reason why its "self-inductance" inductance works because it is passing When a steady current is generated, a changing magnetic field is generated, which in turn affects the current. Therefore, any conductor that passes through an unstable current will generate a changing magnetic field, which in turn affects the current. , so any conductor will have a self-inductance

On the main board, you can see a lot of copper-wound coils. This coil is called an inductor. The inductor is mainly divided into a core inductor and a hollow inductor. The core inductor has a large inductance and is commonly used in a filter circuit. The hollow inductor has a small inductance and is commonly used. High frequency circuit.

The characteristics of the inductor are exactly opposite to those of the capacitor. It has the characteristic of preventing the passage of alternating current and allowing the direct current to pass smoothly. The characteristics of the inductor are DC and resistance AC. The higher the frequency, the larger the coil impedance. Inductors often work with capacitors in the circuit to form LC filters, LC oscillators, and so on. In addition, people also use the characteristics of the inductor to create chokes, transformers, relays and so on.

Type of inductor

According to the shape, the inductor can be divided into a hollow inductor (air core coil) and a solid inductor (solid coil). According to the nature of the work, the inductor can be divided into high frequency inductors (various antenna coils, oscillating coils) and low frequency inductors (various chokes, filter coils, etc.). According to the package form, the inductor can be divided into a common inductor, a color ring inductor, an epoxy inductor, a chip inductor, and the like. According to the inductance, the inductor can be divided into a fixed inductor and a tunable inductor.

The role of the inductor: through DC, blocking AC

Through DC: The so-called DC is the DC circuit, the role of the inductor is equivalent to a wire, does not have any effect.

Resisting AC: In the AC circuit, the inductor will have an impedance, that is, XL, the current of the whole circuit will become smaller, which has a certain hindrance to the AC.