Switching circuit and lamp compatible with fluorescent lamp ballast

Abstract

The invention discloses a switching circuit which is compatible with fluorescent lamp ballast. The switching circuit comprises a rectifying module, a switching module and an LED driving module. The output end of the rectifying module is connected with the input end of the switching module. The output end of the switching module is connected with the input end of the LED driving module. The rectifying module is used for converting an alternating current of an external power supply into a direct current, and then outputting the direct current. When a voltage value output by the rectifying module is lower than a preset threshold value, impedance switching is carried out on the switching module, and equivalent impedance of the switching circuit is increased. The invention further discloses an LED lamp which is compatible with the fluorescent lamp ballast. The LED lamp comprises an LED module and the switching circuit which is compatible with the fluorescent lamp ballast. The output end of the LED driving module is connected with the LED module. The LED lamp which adopts the switching circuit can be fully compatible with direct power connection and one-with-one-type and one-with-more-type ballast of a current fluorescent lamp, and has the advantages of being simple and efficient in design, convenient to replace, and low in cost.

Description

technical field [0001] The invention relates to the technical field of lighting devices, in particular to a conversion circuit compatible with a fluorescent lamp ballast and a lamp. Background technique [0002] With the popularization of modern LED lighting, LED lamps have entered the household era. However, household fluorescent lamps are generally fluorescent lamps. These lamps are generally equipped with inductive or electronic ballasts, and LED fluorescent lamps are generally not compatible with this type of lamps. ballast, which brings troubles to installation and replacement. It needs to be disassembled and changed wiring during installation. Once the LED lamp is broken, it cannot be connected with a traditional fluorescent lamp for emergency, which brings troubles to use and replacement. [0003] In the prior art, there are already some LED lamp devices compatible with fluorescent lamp ballasts, but they can only be compatible with 1-to-multi-type ballasts and canno...

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Problems solved by technology

[0002] With the popularization of contemporary LED lighting, LED lights have entered the era of household use. However, fluorescent lamps for household use are generally fluorescent lamps. Ballasts, and LED fluorescent lamps are generally not compatible with the ballasts of such lamps, which brings troubles to installation and replacement. During installation, it is necessary to disassemble and change the wiring. Once the LED lamp is broken, it cannot be used. Fluorescent lamps are connected to emergency, which brings troubles to use and replacement.

[0003]In the prior art, there are already some LED lamp devices compatible with fluorescent lamp ballasts, but they can only be compatible with one-to-multiple ballasts and cannot be directly connected Electricity, but can not be compatible with 1 tow multi-type ballasts when it can be directly connected to electricity, which requires a device that can be fully compatible with direct connection and 1 tow multi-type ballasts

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