Here are some unique applications of different types of inductors in electronic circuits:
1. ** Chip inductor ** : Widely used in RF wireless communication, information technology equipment, radar detector, automobile, cellular phone, pagers, audio equipment, mobile equipment, wireless remote control system and low-voltage power supply module and other fields; It has the characteristics of small size and suitable for surface mounting.
2. ** Color ring inductance ** : often used in television, DVD, audio equipment, computers and other general electronic equipment; It is characterized by simple structure and low cost.
3. ** Common mode inductors ** : almost in every circuit has applications, such as buck, boost, coupling, sepic/flyback circuit, dc/dc conversion circuit and input and output filter line; It can effectively suppress common mode noise.
4. ** H inductor ** : can be used for a few hundred kHz to one or two MHz of smaller power switching, such as digital camera LED boost, ADSL and other low-frequency part of the signal processing or power purposes. Compared with the flexible patch inductor, its baffle can effectively enhance the energy storage capacity and change the EMI direction and size.
5. ** Magnetic bar inductance ** : It is a strengthened version of hollow inductance, the inductance value is proportional to the permeability, and the inductance value and Q value can be increased by stuffing magnetic materials into the hollow coil. It has simple, basic inductance characteristics and is suitable for a variety of applications where inductors were used 30 to 100 years ago.
6. ** Hollow inductor ** : mainly used for resonance, reception, transmission and other signal processing, suitable for VHF products. However, because air is not an ideal fixed coil material, it is limited in the development of products with increasingly stringent requirements.
7. ** Annular inductance ** : It is the ideal shape in inductance theory, and the closed magnetic circuit makes it have the advantage of few EMI problems, and it is easy to calculate. It uses a large amount of iron powder core as a material, often used in power inductors, IDC up to more than 20 amps. However, its biggest disadvantage is that it is not good to flex the wire, and the process is multi-manual processing. It is used in high frequency and high sensing communication products.
8. ** Laminated high frequency inductance ** : has the characteristics of hollow inductance, and is easy to fix and can be miniaturized. Its material purpose is to make laminated patches to facilitate the printing of lines, and its characteristics are as close as possible to the hollow coil. With the increase of the frequency of communication products, the demand for sensing value decreases, and the use of high frequency inductors for SMT layer will be more and more.
9. ** Through the core magnetic bead ** : in essence, it is an impedance device, which can let the low frequency pass, block the high frequency, and play the role of low-pass filtering.
10. ** Patch magnetic beads ** : It is the next generation of magnetic beads through the heart.
11. ** Chip high frequency transformer and plug-in high frequency transformer ** : generally used for switching power supply.
12. ** Variable inductance ** : The inductance value can be changed by external control, and is often used in circuits that need to adjust the inductance.
13. ** Ferrite inductance ** : The use of ferrite to make a magnetic core, coil wound on ferrite can greatly improve the inductance. Commonly used in all kinds of equipment, with high resistivity, high permeability, low saturation magnetization, eddy current loss and other characteristics, suitable for high-frequency occasions.
14. ** Metal integrated forming inductor ** : The use of metal magnetic materials integrated pressing molding, is a better shielding method, the least electromagnetic leakage. It is not easy to magnetic saturation, good temperature characteristics, but the cost is high. It is commonly used in high-current and high-power applications.