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LED light source circuit

A technology of LED light source and circuit, applied in the field of lighting appliances

Inactive Publication Date: 2016-03-30
朱应长
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the difficulties of the prior art, the present invention solves the problems of the power supply of the existing light-emitting diodes and high-power lighting

Method used

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Embodiment Construction

[0019] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0020] see figure 1 , is a preferable feasible embodiment of the present invention:

[0021] An LED light source circuit, including a light-emitting diode light string composed of several light-emitting diodes, the AC mains is passed through a rectifier circuit and a filter circuit to obtain a DC high-voltage power supply to the light-emitting diode light string, wherein each of the light-emitting diode light strings The light-emitting diodes are connected in parallel with reverse-connected Zener diodes.

[0022] Power supply part: 220V AC mains 8 passes through a rectification circuit composed of rectifier diode 1, rectifier diode 2, rectifier diode 3, and rectifier diode 4, and then passes through filter capacitor 5 to output a DC voltage of about 300V. The power supply is used to supply power to the light-emittin...

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Abstract

The invention discloses an LED light source circuit. The LED light source circuit comprises a light emitting diode string light consisting of a plurality of light emitting diodes, direct current high voltage electricity obtained after an alternating current electric supply passes through a rectifying circuit and a filter circuit supplies power for the light emitting diode string light, wherein each light emitting diode in the light emitting diode string light is in parallel connection with voltage stabilizing diodes in reverse connection respectively. Without using a driver, regulating the voltage or limiting the current, the working current of the light emitting diodes is adjusted by changing the number of the light emitting diodes in the light emitting diode string light, so that normal work of the light emitting diodes is guaranteed. The LED light source circuit is efficient, energy-saving, ultra-long in service life and environment-friendly; and similar to a traditional bulb using method, the input of the alternating current electric supply is directly used, and any power requirement can be met, so that the LED light source circuit is practicable.

Description

technical field [0001] The invention relates to the technical field of lighting appliances, in particular to an LED light source circuit. Background technique [0002] Due to the high luminous efficiency of semiconductors, long life, energy saving and many other advantages, semiconductor lighting has become the future development direction. At present, the working current IF=20mA and the working voltage VF=3.2V of ultra-high-brightness light-emitting diodes on the market, and the electric energy for each light-emitting diode to emit light is about 60 milliwatts. Although light-emitting diodes have high luminous efficiency, at least 3 watts are needed to meet the minimum lighting needs. However, light-emitting diodes are nonlinear devices. If they are used in parallel, some have not yet emitted light, and some have exceeded the limit state. Therefore, when using light-emitting diodes in parallel, a current-limiting resistor must be added to each light-emitting diode to make...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B33/08H05B44/00
CPCH05B45/40H05B45/37
Inventor 朱应长
Owner 朱应长
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