A usb powered led light string

Abstract

The invention discloses a USB-powered LED lamp string control circuit, which relates to the field of household LED lighting; the main points of the technical solution are: including a power supply with a USB interface, a USB interface, a boost circuit, a main control IC chip, and an LED lamp string , filter circuit, protection detection circuit, clock circuit and power output circuit. The present invention outputs 5V voltage through a power supply with a USB interface, pressurizes through a booster circuit, and the main control IC chip is connected to a protection detection circuit to monitor whether the voltage is abnormal in real time, and the detected current flows into the LED light string through the power output circuit to achieve lighting LED light string, the output is stable and bright.

Description

technical field [0001] The invention relates to the field of LED lamp lighting, in particular to a USB-powered LED lamp string control circuit. Background technique [0002] With the rapid development of social economy, LED, as a powerful tool for advertising and beautification, has become more and more common, and has become an indispensable and beautiful landscape for corporate logo publicity and beautification of the city. [0003] USB is an interface technology applied in the PC field. It is a standard expansion interface in the current computer, and various USB versions are well compatible. USB has the advantages of convenient use, supports hot swap, flexible connection, independent power supply, etc., and has become one of the must-have interfaces for today's personal computers and a large number of smart devices. [0004] As a high-tech product, LED light string products can be widely used in the lighting of ground, water features, fountains and stages. However, the...

AI Technical Summary

Problems solved by technology

However, the power supply used in the existing decorative light strings is AC power supply, but sometimes it is difficult to find a power supply for power supply in outdoor places, and the AC power is unstable, which will cause the lights to flicker, and the effect is poor

[0005] At present, the USB-driven light string generally has a small number of LED light groups, and there is no way to emit strong light to illuminate a large area like a bedroom, and the strobe is serious. Most of them use basic amplifier circuits, and the amplification power efficiency is very low. There is no solution. Zero drift phenomenon, no waterproof treatment

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