LHL10NB392J

Fixed inductors, also referred to as chokes, are widely used in audio power supplies, amplifiers, and other power electronic applications. Inductors are typically made of copper windings around a ferromagnetic core, although more modern designs can take advantage of thin film or planar designs. The LHL10NB392J is an example of a high-current, through-hole fixed inductor, used in high-power electronic applications. The following will discuss the application field and working principle of the LHL10NB392J.

Applications

The LHL10NB392J is typically used in DC/DC converters, power amplifiers, and AC/DC power supplies. It is also suitable for applications that require a low DC bias current and high current handling capability, such as voltage reference circuits and switching power supplies. The device features a high saturation current rating of 20 A, making it ideal for high-power applications.

Working Principle

Fixed inductors, like the LHL10NB392J, consist of a ferromagnetic core (typically made of iron or steel) and a set of insulated copper coils wrapped around the core. The electrical current passing through the copper windings produces a magnetic field around it, which in turn produces an opposing voltage. This is known as self-induced voltage or back EMF. As the current through the coils increases, the opposition voltage also increases, thus creating an impedance (resistance) in the circuit.

The self-induced voltage also has an inductance value (measured in Henries) that depends on the number of turns in the inductor, the size of the core, and other factors. In the case of the LHL10NB392J, it has an inductance value of 10 µH. This will influence the frequency response of the inductor and any other components connected in the circuit.

The inductor also has an equivalent series resistance (ESR) value, which is determined by the electrical characteristics of the core material and wire resistance. The ESR value should be taken into account when designing the circuit, as a higher ESR will lead to increased power losses in the inductor and reduced current handling capability.

Conclusion

The LHL10NB392J is a high-current, through-hole fixed inductor, suitable for use in a range of power electronic applications. It features a high saturation current rating of 20 A and an inductance value of 10 µH, making it well suited for high-power applications, such as DC/DC converters and AC/DC power supplies. Its self-induced voltage and the equivalent series resistance of the core must be taken into account when designing the circuit.