Driving power supply of ballast type LED (Light-Emitting Diode) lamp

A technology for LED lamps and driving power, applied in electric light sources, electric lamp circuit layout, light sources, etc., can solve problems such as large current harmonics and reactive power, grid pollution, and difficulty in supplying circuits, and achieve high working reliability, The effect of long service life and low power consumption

Inactive Publication Date: 2012-06-27
李顺华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the LED drive power supply mainly uses the AC 220V mains to be supplied to the load after being transformed and rectified by a transformer. The most commonly used rectification method is a rectifier bridge composed of 4 diodes to convert AC into DC, but this method has many disadvantages. : First, what the LED lamp needs is a constant voltage and constant current source, and the above circuit is difficult to provide
Second, the non-linearity of the DC conversion circuit composed of diodes and capacitors will generate a large number of current harmonics and reactive power, causing pollution to the power grid
As far as the current development is concerned, everyone is most concerned about the life of the lamp. Now both the lamp user and the manufacturer can see that the life of the lamp depends on the driving power supply. More than 99% of the lamp failures are caused by the driving power supply. Caused, the life of LED is as long as 50000h, but the life of the supporting driving power is only 10000h. Therefore, one of the key links for the application and promotion of LED lighting devices is the problem of driving power.

Method used

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  • Driving power supply of ballast type LED (Light-Emitting Diode) lamp
  • Driving power supply of ballast type LED (Light-Emitting Diode) lamp
  • Driving power supply of ballast type LED (Light-Emitting Diode) lamp

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Embodiment Construction

[0010] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0011] see figure 1 , the schematic diagram of the circuit structure of the driving power supply of the ballast LED lamp of the present invention, including capacitor (C), low consumption (low drop) inductance ballast (L), said low consumption inductance ballast ( A rectification element (D) is connected between the A terminal of L) and the input N terminal; the said LED lamp is connected between two points of the rectification output terminals (B) and (E).

[0012] when figure 1 After the (L) and (N) terminals of the ballast LED lamp drive power circuit are connected to the 220V mains, the capacitor (C) and the low-consumption inductance ballast (L) will limit the current to the specified value. After the AC current is commutated by the rectifying element (D), the AC current is converted into a DC current, which is supplied to the LED lamp to ignite the LE...

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Abstract

The invention discloses a driving power supply of a ballast type LED (Light-Emitting Diode) lamp, comprising a capacitor (C) and a low-consumption inductive ballast (L). The driving power supply is characterized in that a rectifying element (D) is connected between the A end and an input N end of the low-consumption inductive ballast (L); and the LED lamp is connected between rectifying output ends (B and C). The driving power supply has the advantages of less self power consumption, low temperature rise, long service life, fewer elements, high working reliability and less harmonic content. The driving power supply is an ideal driving power supply of the LED lamp.

Description

technical field [0001] The invention relates to a driving power supply for a solid-state light-emitting lamp, more specifically, to a driving power supply for a ballast LED lamp. Background technique [0002] At present, the LED drive power supply mainly uses the AC 220V mains to be supplied to the load after being transformed and rectified by a transformer. The most commonly used rectification method is a rectifier bridge composed of 4 diodes to convert AC into DC, but this method has many disadvantages. : One, what LED lamp needs is constant voltage and constant current source, and above-mentioned circuit is difficult to provide. Second, the non-linearity of the DC conversion circuit composed of diodes and capacitors will generate a large number of current harmonics and reactive power, causing pollution to the power grid. This kind of harmonic pollution will not only distort the grid voltage, but also cause failure and damage of electrical equipment. Therefore, it is nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02
Inventor 李顺华
Owner 李顺华
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