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Ballast type LED (light emitting diode) lamp driving circuit with short circuit protection and open circuit protection

A driving circuit and open-circuit protection technology, which is applied in the field of driving circuits of ballast LED lamps

Pending Publication Date: 2015-07-29
李顺华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the driving power supply of the above-mentioned ballast LED lamps has no protection measures under abnormal conditions.

Method used

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  • Ballast type LED (light emitting diode) lamp driving circuit with short circuit protection and open circuit protection
  • Ballast type LED (light emitting diode) lamp driving circuit with short circuit protection and open circuit protection
  • Ballast type LED (light emitting diode) lamp driving circuit with short circuit protection and open circuit protection

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Embodiment Construction

[0014] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0015] figure 1 , figure 2 , image 3 It is the schematic diagram of the drive power supply for the inductance ballast LED lamp with the Chinese patent application number 201310276363.3. figure 1 It is the main circuit circuit diagram of the driving power supply of the inductive ballast LED lamp, figure 2 for figure 1 The circuit diagram of the control loop, image 3 It is the main circuit circuit diagram of the driving power supply of the inductance ballast multi-speed tap LED lamp.

[0016] Figure 4 It is a structural principle diagram of the driving circuit of the ballast LED lamp with short-circuit protection and open-circuit protection of the present invention. In the figure, between the output end of the ballast circuit, that is, node 10, and the input end of the rectification circuit, that is, node D, there is a circuit for cutting off the re...

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Abstract

The invention discloses a ballast type LED lamp driving circuit with short circuit protection and open circuit protection. The ballast type LED lamp driving circuit with short circuit protection and open circuit protection comprises a ballast circuit and a rectifying and loading circuit and is characterized in that a switch K used for disconnecting the rectifying and loading circuit when short circuit and open circuit happen at the output end of the ballast type LED lamp driving circuit and a driving circuit of the switch K are connected between the output end, namely a node 10, of the ballast circuit and the input end, namely a node D, of the rectifying circuit. The ballast type LED lamp driving circuit with short circuit protection and open circuit protection can effectively protect the driving power source of a ballast type LED lamp in abnormal conditions.

Description

technical field [0001] The invention relates to a driving power supply for a solid-state light-emitting lamp, more specifically, to a driving circuit for a ballast LED lamp with short-circuit protection and open-circuit protection. 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] Since the life of the LED lamp depends on the driving power supply, more than 99% of the lamp failures are caused by the driving power supply. The life of th...

Claims

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Application Information

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