LED (light-emitting diode) lighting circuit

A technology of LED lighting and LED lights, which is applied in the direction of lighting devices, circuit layout, lamp circuit layout, etc., can solve the problems of increasing light-emitting diodes, unstable output current, and product performance degradation, and achieves the addition of colorful light-emitting diodes and stable output current , The effect of ensuring reliability

Inactive Publication Date: 2010-09-29
NANCHANG UNIV
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  • Abstract
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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 ste

Method used

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  • LED (light-emitting diode) lighting circuit
  • LED (light-emitting diode) lighting circuit
  • LED (light-emitting diode) lighting circuit

Examples

Experimental program
Comparison scheme
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Example Embodiment

[0012] Attached below figure 1 with figure 2 The implementation mode is further explained.

[0013] An LED lighting circuit. One end of a 105J / 400V step-down capacitor C1 with a capacity of 1 microfarad and a protection resistor R4 with a resistance of 800K in parallel is connected to the second terminal 2 of the 220V power supply of the input port P1. The capacitor C1 and The other end of the resistor R4 in parallel is connected to the positive half-cycle input end of the bridge rectifier circuit composed of rectifier tubes D1-D4; one end of the fuse F1 with a current limit of 0.5A is connected to the first connection of the 220V power supply of the input port P1 Terminal 1 is connected, the other end of the fuse F1 is connected to the negative half-cycle input end of the bridge rectifier circuit, and the fuse F1 plays a role of overcurrent protection for the circuit.

[0014] The anode of the bridge rectifier circuit is connected to the second terminal 2 of the load LED lamp th...

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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...

Claims

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Application Information

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IPC IPC(8): H05B37/02F21V23/00F21Y101/02
Inventor 童小宝
Owner NANCHANG UNIV
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