LED (light-emitting diode) lighting circuit

Abstract

The invention relates to an LED lighting circuit, which is characterized in that a constant flow source which comprises a voltage-regulator tube D3, a fifth current-limiting resistor R5 and a triode Q1 is additionally arranged in the traditional LED lighting circuit. Since the constant flow source is additionally arranged in the traditional LED lighting circuit, and the most notable effect of the constant flow source is stable output current, the output reliability is ensured; even if voltage has fluctuation, the output can not be influenced, and the current output to each branch is constant, and therefore, users can add the number of LED light-emitting diodes according to self needs. The users not only can add the number of the LEDs but also can put the LEDs or change the colors of the diodes at will, and for example, some festive products can be added with colorful light-emitting diodes.

Description

technical field [0001] The invention relates to a lighting circuit, in particular to an LED lighting circuit. Background technique [0002] At present, all countries advocate a low-carbon economy and establish a model based on low energy consumption, low pollution, and low emissions. Compared with incandescent lamps in the past and current energy-saving lamps, LEDs consume 1 / 20 of the energy consumption of incandescent lamps and 1 / 10 of energy-saving lamps at the same brightness, so LEDs will replace the previous two types of lamps. , become the protagonist in the lighting market. [0003] The main problem of the current LED lighting products is that the brightness is not enough. The main reason is that the number of light-emitting diodes is not enough, or the number of light-emitting diodes cannot be increased arbitrarily. For example, in terms of home use, we hope that there will be higher requirements for brightness, but it is more difficult for these products to meet u...

AI Technical Summary

Problems solved by technology

[0003] The main problem of the current LED lighting products is that the brightness is not enough.

For example, in household use, we hope that there is a higher demand for brightness, but it is more difficult for these products to meet the needs of users.

Secondly, in terms of output current, many products are unstable in output current

Most of these products are mainly output to the load through steps such as voltage transformation, rectification, filtering, and voltage stabilization. However, we know that the voltage of the power supply bureau is often unstable, so the voltage at the output terminal of the product will also fluctuate. Fluctuating voltage will reduce the load bearing capacity, resulting in a decline in product performance and greatly reducing the service life of the product

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