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Driving power supply device for ballast LED (light emitting diode) lamp

A technology for LED lamps and driving power, which is applied to the layout of electric lamp circuits, electric light sources, lighting devices, etc., can solve the problems of large charging current, reduce the amplitude of surge voltage, and enhance the effect of anti-interference ability

Inactive Publication Date: 2014-06-18
李顺华
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since this improvement measure achieves constant current by switching the capacitor, assuming that the capacitor is cut off and then put in again without fully discharging, if the phase of the voltage of the circuit capacitance (C) is opposite to the voltage of the removed capacitor, the cut off The capacitor will withstand the voltage exceeding the capacitance (C) on the road, and the maximum may even reach nearly twice the voltage value of the capacitor (C), making the charging current very large

Method used

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  • Driving power supply device for ballast LED (light emitting diode) lamp
  • Driving power supply device for ballast LED (light emitting diode) lamp
  • Driving power supply device for ballast LED (light emitting diode) lamp

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0021] figure 1 , figure 2 For the patent application number 201220477856.4, an improvement scheme is proposed for the driving power supply of the ballast LED lamp with the patent application publication number CN102523674A when the input voltage changes in a wide range.

[0022] image 3 , Figure 4 Shown is the schematic diagram of the local circuit structure of the driving power supply device of the ballast LED lamp of the present invention, in the figure, the node (2) of the first winding (Lz) of the inductive ballast passes through the common terminal of the switch (Ka) and The normally closed contact is connected to the node (3) of the second winding (Lz1), and the output terminal (4) of the second winding (Lz1) is connected to the normally open node of the load and the switch (Ka). At the input end of the driving power supply device of the ballast...

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Abstract

The invention discloses a driving power supply device for a ballast LED (light emitting diode) lamp. The driving power supply device for the ballast LED lamp comprises an inductance ballast first winding (Lz) and is characterized in that a node (2) of the inductance ballast first winding (Lz) is connected with a node (3) of a second winding (Lz1) by a public end and a normally closed contact of a switch (Ka); the output end (4) of the second winding (Lz1) is connected with a load and a normally opened node of the switch (Ka). The driving power supply device for the ballast LED lamp has the advantages that the wide voltage work of the driving power supply device for the ballast LED lamp is realized by a method of switching a tap of a ballast, and a circuit is stable and reliable in work due to the method.

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 device for a ballast-type LED lamp. Background technique [0002] LED semiconductor lighting is a strategic emerging industry that the State Council has accelerated to cultivate and develop. Recently, the Ministry of Science and Technology compiled the "Twelfth Five-Year Special Plan for the Development of Semiconductor Lighting Technology". In the application technology research of the key tasks of the special plan, it was proposed to develop high-efficiency, low-cost, and highly reliable LED drive power. This illustrates the importance of LED drive power in the technical field of semiconductor lighting applications. [0003] At present, the LED drive power supply mainly uses the AC 220V mains to supply the load after rectification and inversion. The most commonly used rectification method is a rectification bridge compo...

Claims

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Application Information

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IPC IPC(8): H05B37/02
CPCY02B20/40
Inventor 李顺华
Owner 李顺华