Circuit structure of AC LED (Alternating Current Light-Emitting Diode) lighting lamp

Abstract

The invention discloses a circuit structure of an AC LED (Alternating-Current Light-Emitting Diode) lighting lamp. In the circuit structure, a rectifying drive power source is not used, and an alternating-current power supply is directly adopted to make the LED lighting lamp work normally. In the circuit structure of the AC LED lighting lamp, at least two LD light sources and one current-limiting resistor are needed for a most basic circuit, wherein the two LED light sources are reversely connected in parallel at first, then one end in the parallel connection is connected in series with the current-limiting resistor, and the other end in the parallel connection and another electrode of the resistor are used as a port for the alternating-current power supply to access. In the most basic circuit structure, a plurality of and even scores of LED light sources instead of each LED light source can also work in a forward-reverse alternating-current mode, and the work principle is completely the same. Besides the simple circuit structure manner, the current-limiting resistor and the plurality of groups of LED light sources can be connected to form a structure in a rectifier bridge manner so as to facilitate the layout of the plurality of LED light sources. In order to increase the stability and the reliability of the LED lighting lamp, a thermistor and a piezoresistor are also adopted in the invention in design, the thermistor is usually connected with the current-limiting resistor in parallel for use, and the piezoresistor is connected with two ends of an electrode of the alternating-current power supply connected with the AC LED circuit structure in parallel.

Description

technical field [0001] The invention discloses a circuit structure of an AC LED lighting lamp (hereinafter referred to as the circuit structure of the AC LED lighting lamp) that can work directly by using an alternating current without rectifying a driving power supply, and belongs to the technical field of semiconductor LED solid-state lighting. Background technique [0002] The advent of LED, or semiconductor light-emitting diode, created a new era of semiconductor lighting materials, and then triggered a global revolution in the traditional lighting industry such as incandescent lamps and fluorescent lamps replaced by semiconductor lighting. LED is an internationally recognized next-generation solid-state lighting source. It has the remarkable characteristics of energy saving, high efficiency, long life, green environmental protection, and no radiation. Its power consumption is only one tenth of that of traditional light sources, and its life span is as long as 100,000 hou...

AI Technical Summary

Problems solved by technology

[0003] Here, the 100,000-hour lifespan of the LED light source brings people unlimited reverie, but the practical application of LED lighting is surprising. Efficiency is also greatly reduced

According to industry standards, even a good quality electrolytic capacitor has a lifespan of only 5,000 hours. In addition to the influence of the quality and lifespan of other electronic components, it is completely predictable that the overall lifespan of the drive power supply cannot be long.

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