Adjustable inductor

Abstract

The invention discloses an adjustable inductor used for achieving automatic adjustment on inductance with a temperature. The adjustable inductor comprises a magnetic core body, wherein a coil is wound around the magnetic core body, the magnetic core body comprises a first magnetic core and a second magnetic core, the first magnetic core and the second magnetic core are connected to form a magnetic flux loop of the adjustable inductor, and the first magnetic core and / or the second magnetic core is made of at least two magnetic materials with different curie temperatures. The adjustable inductor is made of at least two magnetic materials with different curie temperatures; when the adjustable inductor is applied to an occasion requiring different inductances under different temperatures and the temperature of the adjustable inductor is larger than or equal to the curie temperature of one of the magnetic materials, the inductance of the magnetic core body becomes small, the automatic adjustment on the inductance with the temperature is achieved, an extra auxiliary adjustment structure is not needed, an extra temperature sensor is also not needed, the miniature device is promoted, and the production cost is favorably reduced.

Description

technical field [0001] The invention relates to the field of electronic components, in particular to an adjustable inductor. Background technique [0002] Many existing circuits are integrated with a safety monitoring function, which can sense changes in circuit temperature, and when the circuit temperature is too high or too low, change the corresponding parameters in the circuit to realize the function of protecting the circuit. [0003] As one of the commonly used electronic components, inductors are indispensable components for energy storage, filtering, tuning and other functions. Tunable inductor is a kind of inductor with adjustable inductance, which is widely used in various electronic circuits. [0004] When the existing adjustable inductors are applied to occasions requiring different inductances at different temperatures, they have great limitations. This is because the design of the existing adjustable inductor is generally realized by adjusting the number of t...

AI Technical Summary

Problems solved by technology

Due to the auxiliary adjustment structure of the adjustable inductor, it is difficult to miniaturize and integrate the device, and the power density is small; because the auxiliary adjustment structure is mostly a mechanical structure, its adjustment accuracy is not high, so that the stability and consistency of the parameters of the adjustable inductor are relatively low. Difference

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