This inductor has high coupling results between winding and early saturation. These are generally made up of different materials like ferrite, powdered iron and tape wound etc. Wire wounded on core which has ring or donut shaped surface. These are shown below Two Bobbin Inductor
#Ferrite core inductor vs 60 hz signals Pc
Radial lead means lead exits from both sides of the core for vertical mounting on PC board. Axial lead means lead exits from both sides of the core for horizontal mounting on PC board. It consist of two types of leads they are axial lead and radial lead. These are mainly used for mounting on printed circuit boards. These are wounded on cylindrical bobbin so these are named as bobbin based inductors. They have high power levels so, they are mostly used at power filtering devices for excitation frequencies above several KHz. These are used in low frequency detectors. These are arranged parallel to the field to avoid eddy current losses between the laminations. So this construction has more flexibility.These laminations are made up of steel with insulating material between them. These laminations may be made up of different materials and with different thicknesses. These core materials are formed by arranging many number of laminations on top of each other. These are mainly applicable in switching power supplies. Thus these inductors posses with high temperature co-efficient stability. Mostly the initial permeability’s are below 100 only. This leads to reduce the permeability of the core. This characteristic allows a higher DC current level to flow through the inductor before inductor saturates. By this action iron powder forms like a magnetic solid structure which consists of distributed air gap.ĭue to this air gap it is capable to store high magnetic flux when compared with the ferrite core. It gives us a solid looking core when this iron power is compressed under very high pressure and mixed with a binder such as epoxy or phenolic. This type of inductor contains nearly 100% iron only.
These are formed from very fine particles with insulated particles of highly pure iron powder. Thus the inductance is very high with ferrite core when compared to the inductor with air core. This permeability level ranges from 20 to 15,000 according to the material of ferrite. The level of the permeability of the ferrite core used within the inductors will depend on the ferrite material. These will keep the polarity of the magnetization even after removing the magnetic field.įerrite core inductor will help to improve the performance of the inductor by increasing the permeability of the coil which leads to increase the value of the inductance. These are also called as permanent magnets. These materials will have the ability to reverse their polarity of their magnetization without any particular amount of energy needed to reverse the magnetic polarity. Coercivity is the magnetic field intensity needed to demagnetize the ferromagnetic material from complete saturation state to zero. These are classified according to the magnetic coercivity. Mostly easily magnetized material combinations are used such as manganese and zinc (MnZn), nickel and zinc (niZn).įerrites are mainly two types they are soft ferrites and hard ferrites.
The general composition of ferrites is XFe 2O 4. They consist of mixed metal oxide of iron and other elements to form crystalline structures. inductor with iron coreįerrite is also referred as ferromagnetic material. When compared with other core indictors these have very limited applications. These are applicable in audio equipments. In the areas where low space inductors are in need then these iron core inductors are best option.These inductors have high power and high inductance value but limited in high frequency capacity. These are mainly used in high frequency applications where low inductance values are required.
The main advantage of these inductors are very low core losses, high Quality factor. In some cases it will also provide the structure to hold the terminals in place. Its main aim is to give a form for the coil. Since ceramic has no magnetic properties, there is no increase in the permeability value due to the core material. Ceramic has very low thermal co-efficient of expansion, so even for a range of operating temperatures the stability of the inductor’s inductance is high. Ceramic is the most commonly used material for inductor cores. Depending on their material type they are basically categorized as followsĬeramic core inductors are referred as “ Air core inductors”.