CN215808354U

CN215808354U - Adjustable analog load for LED constant current drive

Info

Publication number: CN215808354U
Application number: CN202121481219.XU
Authority: CN
Inventors: 魏启亮
Original assignee: Shandong Fanli Electronic Technology Co ltd
Current assignee: Shandong Fanli Electronic Technology Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-02-11
Anticipated expiration: 2031-06-30

Abstract

The application discloses an adjustable analog load for LED constant current drive includes: the PCB comprises a first PCB, a second PCB, a third PCB and a plurality of groups of jumper wires; the first PCB is provided with an LED lamp group, an adjusting switch for adjusting the number of LED lamps connected into a circuit and/or input voltage, and a first connecting part; the second PCB board is provided with a plurality of second main connecting parts and second auxiliary connecting parts which are electrically connected with the first connecting parts; the third PCB is provided with a plurality of third connecting parts and LED driving connecting parts, and the third connecting parts are used for being electrically connected with the second main connecting parts or the first connecting parts; the plurality of groups of jumper groups are arranged on the second PCB and/or the third PCB, and when the jumper groups are connected with the jumper caps, the number of the LED lamp groups driven by the accessed LEDs and the series-parallel relation of each group of the LED lamp groups can be adjusted. The method and the device solve the problems that in the related art, the testing process of the LED drive is complicated, and the testing efficiency is low.

Description

Adjustable analog load for LED constant current drive

Technical Field

The application relates to the technical field of LED testing, in particular to an adjustable analog load for LED constant current driving.

Background

When LED constant current drives such as production test and maintenance TV power strip, the trinity mainboard of TV, LED advertisement drive, LED lighting drive, can meet the LED drive of a lot of parameters, just need a plurality of equipment of overlap joint or prepare the LED lamp pearl circuit that corresponds driving parameter, lead to comparatively loaded down with trivial details to LED driven testing process, efficiency of software testing is lower.

Aiming at the problems that in the prior art, when different LED drives are tested, a plurality of devices need to be lapped or LED lamp bead circuits corresponding to driving parameters need to be prepared, so that the testing process of the LED drives is complicated, and the testing efficiency is low, an effective solution is not provided at present.

SUMMERY OF THE UTILITY MODEL

The main aim at of this application provides an adjustable dummy load for LED constant current drive to need a plurality of equipment of overlap joint or prepare the LED lamp pearl circuit that corresponds driving parameter when testing different LED drives among the solution correlation technique, lead to comparatively loaded down with trivial details to LED driven testing process, problem that efficiency of software testing is lower.

In order to achieve the above object, the present application provides an adjustable analog load for LED constant current driving, including: the PCB comprises a first PCB, a second PCB, a third PCB and a plurality of groups of jumper wires; the first PCB is provided with an LED lamp group, an adjusting switch for adjusting the number of LED lamps connected into a circuit and/or input voltage, and a first connecting part; the second PCB board is provided with a plurality of second main connecting parts and second auxiliary connecting parts which are electrically connected with the first connecting parts; the third PCB is provided with a plurality of third connecting parts and LED driving connecting parts, and the third connecting parts are used for being electrically connected with the second main connecting parts or the first connecting parts; the plurality of groups of jumper groups are arranged on the second PCB and/or the third PCB, and when the jumper groups are connected with the jumper caps, the number of the LED lamp groups driven by the accessed LEDs and the series-parallel relation of each group of the LED lamp groups can be adjusted.

Furthermore, a plurality of groups of jumper wires are arranged on the second PCB;

each group of jumper wire groups comprises two adjacent jumper pins, and the two adjacent jumper pins are respectively connected with the connecting ends of different second auxiliary connecting parts;

when the adjacent jumper pins are connected by the jumper caps, the second auxiliary connecting parts respectively connecting the two adjacent jumper pins are connected through the adjacent jumper pins and the jumper caps so as to adjust the number of the LED lamp groups driven by the accessed LEDs and the series-parallel relation of each group of the LED lamp groups.

Furthermore, a plurality of groups of jumper wires are arranged on the third PCB;

each group of jumper wire groups comprises two adjacent jumper pins, and the two adjacent jumper pins are respectively connected with the connecting ends of different LED lamp groups;

when the adjacent jumper pins are connected by the jumper wire cap, the LED lamp groups respectively connected with the two adjacent jumper pins are connected by the adjacent jumper pins and the jumper wire cap so as to adjust the number of the LED lamp groups driven by the accessed LEDs and the series-parallel relation of each group of the LED lamp groups.

Further, the regulating switch comprises an input voltage coarse regulating switch and an input voltage fine regulating switch.

Further, the LED driving connecting part is a bonding pad fixedly arranged on the third PCB, the bonding pad is connected with the third connecting part, and the bonding pad is used for welding a lead and is connected with the LED driver.

Further, the first connecting part and the second auxiliary connecting part are connected through a conducting wire; the second main connecting portion and the third connecting portion are connected by a wire.

Furthermore, first connecting portion and the main connecting portion of second all set up to connect female, the vice connecting portion of second and third connecting portion set up to the public head of being connected that can peg graft with the female head of being connected that corresponds.

In the embodiment of the application, a first PCB, a second PCB, a third PCB and a plurality of groups of jumper wire groups are arranged; the first PCB is provided with an LED lamp group, an adjusting switch for adjusting the number of LED lamps connected into a circuit and/or input voltage, and a first connecting part; the second PCB board is provided with a plurality of second main connecting parts and second auxiliary connecting parts which are electrically connected with the first connecting parts; the third PCB is provided with a plurality of third connecting parts and LED driving connecting parts, and the third connecting parts are used for being electrically connected with the second main connecting parts or the first connecting parts; the LED drive testing device comprises a plurality of groups of jumper groups, wherein the jumper groups are arranged on a second PCB and/or a third PCB, when the jumper groups are connected with jumper caps, the number of the LED lamp groups connected into the LED drive and the series-parallel relation of each group of the LED lamp groups can be adjusted, the LED lamp groups can be used as testing loads, and the purpose that the parameters of the loads can be quickly adjusted to match the testing requirements of the LED drive is achieved, so that the technical effect of efficiently and conveniently testing the LED drive with different drive parameters is achieved, and the problems that in the related technology, when the different LED drives are tested, a plurality of devices need to be lapped or LED lamp bead circuits corresponding to the drive parameters need to be prepared, the testing process of the LED drive is complicated, and the testing efficiency is low are solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

fig. 1 is a schematic structural diagram of a first PCB board according to an embodiment of the present application;

FIG. 2 is a schematic diagram of a second PCB board according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a third PCB board according to an embodiment of the present application;

the LED lamp comprises an LED lamp 1, a first PCB 2, a first connecting part 3, a regulating switch 4, an LED lamp group 5, a 6W-Board Board, a second auxiliary connecting part 7, a second PCB 8, a second main connecting part 9, a 10E-Board Board, a third connecting part 11, a bonding pad 14, a third PCB 15 and a 16I-Board.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1 to fig. 3, an embodiment of the present application provides an adjustable analog load for LED constant current driving, where the adjustable analog load for LED constant current driving includes: the PCB comprises a first PCB (printed circuit board) 2, a second PCB 8, a third PCB 15 and a plurality of groups of jumper wires; the first PCB 2 is provided with an LED lamp group 5, an adjusting switch 4 for adjusting the number of the LED lamps 1 connected into the circuit and/or the input voltage, and a first connecting part 3; the second PCB board 8 is provided with a plurality of second main connection parts 9 and second sub-connection parts 7 for electrically connecting with the first connection parts 3; the third PCB 15 is provided with a plurality of third connecting parts 11 and LED driving connecting parts, and the third connecting parts 11 are used for electrically connecting with the second main connecting part 9 or the first connecting part 3; and when the jumper groups are connected with the jumper caps, the number of the LED lamp groups 5 connected with the LED drive and the series-parallel relation of each LED lamp group 5 can be adjusted.

In this embodiment, the first PCB 2, the LED lamp assembly 5, the adjusting switch 4 and the first connecting portion 3 are collectively used as a W-Board 6, the second PCB 8, the second main connecting portion 9, the second sub-connecting portion 7 and the jumper set are used as an E-Board 10, and the third PCB 15, the third connecting portion 11, the LED driving connecting portion and the jumper set are used as an I-Board16, so that the analog load includes three test circuit boards.

The LED lamp groups 5 are arranged in a plurality of numbers and fixed on the first PCB 2, each LED lamp group 5 is formed by connecting a plurality of LEDs in series, each LED lamp group 5 is at least matched with one adjusting switch 4, and the number of the LED lamps 1 connected into the circuit and/or the input voltage can be adjusted through the adjusting switches 4. When the number of the LED lamps 1 on one W-Board 6 and the input voltage meet the measurement requirement of LED driving, the first connecting part 3 on the W-Board 6 and the third connecting part 11 on the third PCB 15 can be directly connected in a wire connection or electrical insertion mode, and then the LED driving connecting part on the third PCB 15 and the LED driving are connected, so that the LED driving is tested. When the LED is driven normally, the LED lamp 1 connected to the circuit emits light normally.

When the number of the LED lamps 1 on one W-Board 6 and the input voltage do not meet the measurement requirement of LED driving, two or more first PCB boards 2 can be connected through the first connecting parts 3 and the second auxiliary connecting parts 7 on the second PCB Board 8, and the second auxiliary connecting parts 7 on the second PCB Board 8 are arranged in a plurality of numbers, so that the connection of the first PCB boards 2 can be met, the number of the LED lamps 1 meets the test requirement of LED driving, and then different jumper groups can be connected through jumper caps to adjust the series-parallel relation between the LED lamp groups 5 so as to meet the test requirement of LED driving on voltage.

Similarly, a plurality of first PCB boards 2 can be directly installed on the second PCB board 8, then the second PCB board 8 is installed on the third PCB board 15, the quantity and the input voltage of the LED lamps 1 connected into the LED driving circuit are adjusted through the adjusting switch 4, the jumper wire group and the jumper cap, so that the testing requirements of LED driving of different driving parameters are met, and the testing process is obviously improved in testing efficiency and testing convenience compared with a structure in the related art.

The problem of need overlap joint a plurality of equipment or prepare corresponding drive parameter's 1 pearl circuit of LED lamp among the prior art when testing different LED drives, lead to comparatively loaded down with trivial details to LED driven testing process, efficiency of software testing is lower is solved.

The purpose of the jumper set in this application is to adjust the number of LED lamps 1 connected to the LED driving circuit and the series-parallel relationship of the LED lamp sets 5, and it is a technical means known to those skilled in the art to implement, for example, a resistor or a load connection test circuit by using the jumper set and a jumper cap in cooperation, and therefore details on how to set the jumper set are not described herein.

In the analog load, a jumper group (not shown in the figure) may be preset on the second PCB 8, or may be preset on the third PCB 15, in this embodiment, the jumper group is described as being arranged on the second PCB 8, and multiple groups of jumper groups are arranged on the second PCB 8; each group of jumper wire groups comprises two adjacent jumper pins which are respectively connected with the connecting ends of different second auxiliary connecting parts 7; when the adjacent jumper pins are connected by the jumper caps, the second auxiliary connecting parts 7 respectively connecting the two adjacent jumper pins are connected through the adjacent jumper pins and the jumper caps so as to adjust the number of the LED lamp groups 5 driven by the accessed LEDs and the series-parallel relation of each LED lamp group 5.

Thereby connect different jump needles through the wire jumper cap and realize the connection to the vice connecting portion 7 of different seconds, LED lamp 1 quantity is different on the first PCB board 2 of connecting on the vice connecting portion 7 of second of difference, can realize adjusting the LED lamp 1 quantity of inserting LED driven through the wire jumper cap, also can change the series-parallel relation between the first PCB board 2 on the vice connecting portion 7 of different seconds on the same reason, adjust the series-parallel relation of LED banks 5 on the different first PCB boards 2 then, in order to match the LED driven test requirement.

As shown in fig. 1 to 3, a plurality of sets of jumper wires are arranged on the third PCB 15;

each group of jumper wire groups comprises two adjacent jumper pins which are respectively connected with the connecting ends of different LED lamp groups 5;

when the adjacent jumper pins are connected by the jumper caps, the LED lamp groups 5 respectively connected with the two adjacent jumper pins are connected through the adjacent jumper pins and the jumper caps so as to adjust the number of the LED lamp groups 5 driven by the accessed LEDs and the series-parallel relation of each LED lamp group 5.

In this embodiment, for example, the jumper set is preset on the third PCB 15, and the method is mainly applied to the LED lamp set 5 on the single third PCB 15 to meet the test requirement of LED driving. It should be noted that, the jumper set is preset on the second PCB 8 and the third PCB 15 at the same time, and through different testing requirements, a tester selects a more appropriate testing mode by himself, so that the flexibility of use of the load can be improved.

Further, the regulating switch 4 includes an input voltage coarse regulating switch and an input voltage fine regulating switch, thereby improving the regulating accuracy of the input voltage.

Further, the LED driving connection portion is a pad 14 fixedly disposed on the third PCB 15, the pad 14 is connected to the third connection portion 11, and the pad 14 is used for welding a wire to connect with the LED driver. The first connection portion 3 and the second sub-connection portion 7 are connected by a wire; the second main connection portion 9 and the third connection portion 11 are connected by a wire.

Further, the first connecting portion 3 and the second main connecting portion 9 are both set to be connected with the female head, and the second auxiliary connecting portion and the third connecting portion 11 are set to be connected with the corresponding male head connected with the female head in an inserting mode.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An adjustable analog load for constant current driving of an LED, comprising: the PCB comprises a first PCB, a second PCB, a third PCB and a plurality of groups of jumper wires; wherein the content of the first and second substances,

the first PCB is provided with an LED lamp group, an adjusting switch for adjusting the number of LED lamps connected into the circuit and/or input voltage, and a first connecting part;

the second PCB is provided with a second main connecting part and a plurality of second auxiliary connecting parts which are electrically connected with the first connecting part;

the third PCB is provided with a plurality of third connecting parts and LED driving connecting parts, and the third connecting parts are used for being electrically connected with the second main connecting parts or the first connecting parts;

the plurality of groups of jumper groups are arranged on the second PCB and/or the third PCB, and when the jumper groups are connected with the jumper caps, the number of the LED lamp groups driven by the accessed LEDs and the series-parallel relation of each group of the LED lamp groups can be adjusted.

2. The adjustable analog load for constant current driving of the LED according to claim 1, wherein a plurality of groups of the jumper wires are arranged on the second PCB;

3. The adjustable analog load for constant current driving of the LED according to claim 2, wherein a plurality of sets of the jumper wires are disposed on the third PCB;

4. The adjustable analog load for constant current driving of an LED according to claim 3, wherein the adjusting switches comprise an input voltage coarse adjusting switch and an input voltage fine adjusting switch.

5. The adjustable analog load for constant current driving of the LED according to claim 4, wherein the LED driving connection part is a bonding pad fixedly arranged on the third PCB, the bonding pad is connected with the third connection part, and the bonding pad is used for welding a wire to be connected with the LED driving.

6. The adjustable analog load for constant current driving of the LED according to claim 5, wherein the first connection part and the second auxiliary connection part are connected through a wire; the second main connecting portion and the third connecting portion are connected by a wire.

7. The adjustable analog load for constant current driving of the LED according to any one of claims 1 to 6, wherein the first connection portion and the second main connection portion are both configured to be connected with a female connector, and the second auxiliary connection portion and the third connection portion are configured to be connected with a male connector which can be plugged with the corresponding female connector.