Anti-interference LED drive circuit structure

Abstract

The utility model discloses an anti-interference LED drive circuit structure which comprises a substrate and an input bonding pad arranged on the substrate, and the substrate is also provided with a first filter, a rectifier bridge, a second filter, an IC, an MOS tube, a current storage diode, a transformer and an output bonding pad. The input bonding pad is connected with the first filter, and the first filter is connected with the input end of the rectifier bridge; the second filter is connected to the output end of the rectifier bridge, and the IC is connected with the output end of the second filter; the IC is connected with the transformer through the MOS tube and the current storage diode, and the output end of the transformer is electrically connected with the output bonding pad. According to the utility model, the structure arrangement is reasonable, after filtering and rectification are carried out through the first filter and the rectifier bridge, secondary filtering is carried out through the second filter, the anti-interference performance can be improved, the overall assembly cost can be reduced, resources can be saved, the overall size is small, disassembly, assembly and use are facilitated, and the use stability and reliability are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED lamp driving power supply, and in particular relates to an anti-interference LED driving circuit structure. Background Art

[0002] LED lamps are a common lighting and decorative structure with good energy-saving effects and long service life. Household lighting LED lamps are voltage-resistant current devices with an operating voltage of generally around 12-85V. Therefore, when using LED lamps, corresponding drive circuits are required. Although the LED lamp circuit boards in the prior art can meet the general usage requirements, there is still certain signal interference during use. The conventional circuit boards have limited anti-interference performance. At the same time, the circuit structure of the prior art drive circuit is also very complex, which greatly increases the cost of use. At the same time, it is difficult to meet the anti-interference performance, so the applicability and practicality are limited. Utility Model Content

[0003] The utility model aims to provide an anti-interference LED driving circuit structure which has a reasonable structural setting and is conducive to improving the anti-interference performance.

[0004] The technical solution to achieve the purpose of the utility model is an anti-interference LED driving circuit structure, including a substrate, an input pad arranged on the substrate, and a first filter, a rectifier bridge, a second filter, an IC, a MOS tube, a current storage diode, a transformer and an output pad are also arranged on the substrate;

[0005] The input pad is connected to the first filter, and the first filter is connected to the input end of the rectifier bridge;

[0006] The second filter is connected to the output end of the rectifier bridge, and the IC is connected to the output end of the second filter;

[0007] The IC is connected to the transformer via a MOS tube and a current storage diode, and the output end of the transformer is electrically connected to the output pad.

[0008] It is further preferred that: an electrolytic capacitor connected to the IC is also provided on the substrate.

[0009] It is further preferred that: the number of the current storage diodes is two, and the two current storage diodes are arranged in series.

[0010] More preferably, the substrate is an aluminum substrate.

[0011] It is further preferred that: a plurality of resistors connected to the IC and used for adjusting current are also arranged on the substrate.

[0012] The utility model has positive effects: the structure of the utility model is reasonably set up, and its input pad is filtered and rectified by the first filter and the rectifier bridge, and then filtered twice by the second filter, which is beneficial to improving the anti-interference performance, and the overall components are relatively small, which is beneficial to reducing the overall assembly cost and saving resources, and the overall volume is small, which is conducive to disassembly and assembly, improves the stability and reliability of use, and has strong applicability and good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to make the content of the utility model easier to understand, the utility model is further described in detail below according to specific embodiments and in conjunction with the accompanying drawings, wherein:

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure numerals: substrate 1, input pad 2, first filter 3, rectifier bridge 4, second filter 5, IC 6, MOS tube 7, current storage diode 8, transformer 9, output pad 10, electrolytic capacitor 11, resistor 12. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0017] Example

[0018] See Figure 1, an anti-interference LED driving circuit structure, including a substrate 1, in this embodiment, the substrate is an aluminum substrate. An input pad 2 is arranged on the substrate, and a first filter 3, a rectifier bridge 4, a second filter 5, an IC 6, a MOS tube 7, a current storage diode 8, a transformer 9 and an output pad 10 are also arranged on the substrate; in this embodiment, the above-mentioned electronic components are conventional components of the prior art, and are simply applied. When installing and connecting, the input pad is connected to the first filter, and the first filter is connected to the input end of the rectifier bridge; the second filter is connected to the output end of the rectifier bridge, and the IC is connected to the output end of the second filter; the IC is connected to the transformer through the MOS tube and the current storage diode, and the output end of the transformer is electrically connected to the output pad. The input pad is filtered and rectified by the first filter and the rectifier bridge, and then filtered twice by the second filter, which is conducive to improving the anti-interference performance. Moreover, it is connected to the transformer after the IC cooperates with the MOS tube and the current storage diode, which can also ensure the stability and reliability of the transformer input.

[0019] In this embodiment, an electrolytic capacitor 11 connected to the IC is also provided on the substrate. In addition, there are two current storage diodes, and the two current storage diodes are arranged in series. The two current storage diodes connected in series are used as protection devices in power transformers and other electronic devices to control current and protect circuits.

[0020] The substrate is also provided with a plurality of resistors 12 connected to the IC and used for adjusting the current. The resistors 12 are mainly used for adjusting the current.

[0021] The utility model has positive effects: the structure of the utility model is reasonably set up, and its input pad is filtered and rectified by the first filter and the rectifier bridge, and then filtered twice by the second filter, which is beneficial to improving the anti-interference performance, and the overall components are relatively small, which is beneficial to reducing the overall assembly cost and saving resources, and the overall volume is small, which is conducive to disassembly and assembly, improves the stability and reliability of use, and has strong applicability and good practicality.

[0022] The standard parts used in this embodiment can be purchased directly from the market, and the non-standard structural components recorded in the specification can also be directly processed according to existing technical common sense. At the same time, the connection method of each component adopts the mature conventional means in the prior art, and the machinery, parts and equipment all adopt the conventional models in the prior art, so no specific description will be given here.

[0023] Obviously, the above embodiments of the present invention are merely examples for clearly explaining the present invention, and are not intended to limit the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. However, these obvious changes or modifications derived from the essential spirit of the present invention still belong to the protection scope of the present invention.

Claims

1. An anti-interference LED driving circuit structure, comprising a substrate, an input pad arranged on the substrate, characterized in that: The substrate is also provided with a first filter, a rectifier bridge, a second filter, an IC, a MOS tube, a current storage diode, a transformer and an output pad; The input pad is connected to the first filter, and the first filter is connected to the input end of the rectifier bridge; The second filter is connected to the output end of the rectifier bridge, and the IC is connected to the output end of the second filter; The IC is connected to the transformer via a MOS tube and a current storage diode, and the output end of the transformer is electrically connected to the output pad.

2. The anti-interference LED driving circuit structure according to claim 1, characterized in that: An electrolytic capacitor connected to the IC is also arranged on the substrate.

3. The anti-interference LED driving circuit structure according to claim 2, characterized in that: There are two current storage diodes, and the two current storage diodes are arranged in series.

4. The anti-interference LED driving circuit structure according to claim 1, characterized in that: The substrate is an aluminum substrate.

5. The anti-interference LED driving circuit structure according to claim 1, characterized in that: The substrate is also provided with a plurality of resistors connected to the IC and used for adjusting the current.

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