I-shaped inductor used for driving power of LED (Light Emitting Diode) energy-saving lamp

Abstract

The invention discloses an I-shaped inductor used for a driving power of an LED (Light Emitting Diode) energy-saving lamp, which is composed of a framework, a magnetic core, a copper core coil and a pin connected to a lead of the copper core coil, wherein the magnetic core is mounted in the framework; round magnetic sheets are arranged at upper and lower ends of the magnetic core respectively; the section of the magnetic core is I-shaped; a wiring duct is formed in the outer circumference of the magnetic core; the copper core coil is wound on the wiring duct in the outer circumference of the magnetic core; a shield hood is arranged on the outer surface of the framework. With the adoption of the technical scheme of the invention, the structure design is rational, the installation space is small, the installation is convenient and fast, an open circuit phenomenon is not easy to happen, and the product quality is guaranteed.

Description

technical field [0001] The invention belongs to the design of inductance, and in particular relates to an I-shaped inductance used for a driving power supply of an LED energy-saving lamp. Background technique [0002] Inductance is one of the properties of electronic circuits or devices. When the current changes, an electromotive force that resists the change of current is generated due to electromagnetic induction. At low frequencies, the inductance generally exhibits inductive characteristics, which can store energy and filter high frequencies. At high frequencies, its impedance characteristics are obvious, and there are phenomena such as energy consumption and heat generation, and reduced inductance. In the LED drive power supply circuit, the commonly used inductance is the ring inductor. Due to the limited area of ​​the PCB power board, the space is small, while the ring inductor occupies a large space and has a large distributed capacitance. It is easy to produce an ope...

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Problems solved by technology

[0002] Inductance is one of the properties of electronic circuits or devices. When the current changes, an electromotive force that resists the change of current is generated due to electromagnetic induction. At low frequencies, the inductance generally exhibits inductive characteristics, which can store energy and filter high frequencies. At high frequencies, its impedance characteristics are obvious, and there are phenomena such as energy consumption and heat generation, and reduced inductance.

In the LED drive power supply circuit, the commonly used inductance is the ring inductor. Due to the limited area of ​​the PCB power board, the space is small, while the ring inductor occupies a large space and has a large distributed capacitance. It is easy to produce an open circuit during installation, which is not conducive to installation. affect the quality of the product

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