Fixed Inductors

Inductors are components that store electrical energy in the form of magnetic fields. The coils that form such components can produce a magnetic field when voltage is applied across them. Fixed inductors are used in various applications such as voltage converters, filtering, radar detection, antenna matching, and many other areas. A PA4547.682NLT is a type of fixed inductor with application fields and its working principles.

Description

The PA4547.682NLT (also known as RTD4547) is a fixed inductor of the 4547 series manufactured by Laird Technologies. It consists of a ferrite core that is formed into a toroidal shape and features a lead frame enclosed in a plastic coating. The toroid accommodates the induction and coil winding with a lead-free tin body and short limbs. This lead-free certifications confirms that it meets all safety standards for use in a variety of applications.

Features

The PA4547.682NLT has an inductance value of 6.82µH with a low resistance of 30mΩ. It has the operating temperature range of -55°C to +125°C and a dc resistance of ≤1.5mΩ. The operating current of this inductor is 90A but it has a rated voltage of only 24V. The current rating of this inductor means it can handle a peak current up to 130A for a short-period of time. In addition, its shielded structure and robust construction ensure it can withstand harsh environments.

Applications and Working principle

PA4547.682NLT is widely used in switch mode power supplies, electronic ballast, LED lighting, and power amplifiers. It is also used for ancillary control electronic equipment such as UPSs and inverters. In these applications, the inductor rids of the unnecessary spark and voltage jumps that may occur due to current disturbances. It also ensures a smooth transfer and maintains stability in the current flow. The indcutor works by blocking the higher frequency portions from altering the current and hence keeps the current from flashing.

The working of the inductor is based on the basic principle of magnetism. When a voltage is applied across its windings, a coil forms that creates a magnetic field. The coil stores the energy in the form of the magnetic field and acts as a brake to the current, thus limiting the change in current flow. If the voltage is changed, the current also changes, in accordance with the law of induction.

Conclusion

PA4547.682NLT is a type of fixed inductor that is used in a variety of applications. It has a low resistance of 30mΩ, an inductance value of 6.82µH, and a rated voltage of 24V. It can handle a peak current of up to 130A and works by blocking higher frequencies from altering the current. The working principle of the inductor is based on the principle of magnetism, where a voltage applied across the windings creates a magnetic field that stores the energy and acts as a brake to the current.