Toroid ferrite magnetic core is a kind of magnetic components widely used in electronic equipment, mainly including NZ ferrite rings and MZ ferrite rings, which can effectively suppress electromagnetic interference and improve the stability and reliability of electronic equipment. So how do we choose the right ferrite ring to ensure that it maintains a good working condition for a long time? We have summarised the following points:

I. First, choosing the appropriate Toroid ferrite magnetic core

To start,the appropriate Toroid ferrite magnetic core should be selected according to the actual needs of the electronic equipment. In general, it is necessary to choose according to the speed of interference frequency, interference intensity, circuit board layout and so on. At the same time, pay attention to the size, shape, material and other factors of the Toroid ferrite magnetic core to ensure that it can meet the actual needs.

II. Second, installing Toroid ferrite magnetic core

When installing the Toroid ferrite magnetic core, it is necessary to select the appropriate location according to the layout of the circuit board and the size of the Toroid ferrite magnetic core. In general, the Toroid ferrite magnetic core should be placed near the power cord and ground wire on the circuit board to minimize electromagnetic interference. At the same time, ensure that the Toroid ferrite magnetic core is kept at a certain distance from the power cord and ground wire. To avoid damage to the circuit board.

III. Third, adjust the parameters of the Toroid ferrite magnetic core

When using Toroid ferrite magnetic core, it is necessary to adjust its parameters according to the actual situation. Generally speaking, the impedance and inductive reactance can be changed by adjusting the number of turns,size and other parameters of the Toroid ferrite magnetic core. Thus the effective suppression of electromagnetic interference can be realized. When adjusting parameters, be careful not to over adjust, so as not to cause damage to the circuit board.

IV. Regular inspection and maintenance

In the process of use, it is necessary to check and maintain the Toroid ferrite magnetic core regularly. In general, it is necessary to check whether the Toroid ferrite magnetic core is loose, damaged and so on, and replace or repair it in time. At the same time, it is also necessary to regularly clean the dust and dirt on the surface of the Toroid ferrite magnetic core to maintain its good working condition.

We manufacture a variety of toroidal inductors, EMI filters and choke coils, which often use ferrite rings to wind common mode inductors. We need to pay attention to the following requirements:

1. The wires wound on the core of the coil should be insulated from each other to ensure that there is no short-circuit breakdown between the turns of the coil under the action of transient overvoltage.

2. The ferrite core should not become saturated when the coil is flowing an instantaneous high current.

3. The ferrite core in the coil should be insulated from the coil to prevent breakdown between the two under transient overvoltage.

4. The coil should be wound single layer as far as possible, so as to reduce the parasitic capacitance of the coil, and enhance the ability of the coil to withstand transient overvoltage.

The correct use of Toroid ferrite magnetic core is of great significance to improve the stability and reliability of electronic equipment, in the actual use of the process need to choose the appropriate Toroid ferrite magnetic core according to the actual situation, and in accordance with the correct method of installation and adjustment, at the same time, also need to regularly check and maintain the Toroid ferrite magnetic core to ensure that it can maintain good working condition for a long time.