CN110927563A

CN110927563A - Circuit board pad short circuit detection device

Info

Publication number: CN110927563A
Application number: CN201911369080.7A
Authority: CN
Inventors: 肖四海
Original assignee: ICON ENERGY SYSTEM CO Ltd
Current assignee: ICON ENERGY SYSTEM CO Ltd
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-03-27

Abstract

The invention discloses a circuit board pad short circuit detection device, comprising: the power module comprises a power module, an indicator light, an anode lead and a cathode lead, wherein one end of the anode lead is connected with the anode of the power module, the other end of the anode lead is connected with a first bonding pad, one end of the cathode lead is connected with the cathode of the power module, the other end of the cathode lead is connected with a second bonding pad, the first bonding pad is connected with the second bonding pad to be detected, the indicator light is connected in series with the anode of the power module or between the bonding pads, and the indicator light is connected in series with the cathode of the power module and between the bonding pads. The invention can conveniently and rapidly detect whether short circuit exists between the circuit board pads, and has high accuracy and low cost.

Description

Circuit board pad short circuit detection device

Technical Field

The invention relates to the field of electronic circuits, in particular to a circuit board pad short circuit detection device.

Background

After a Printed Circuit Board (PCB) is soldered with a lead, a short Circuit occurs between adjacent pads. With the miniaturization degree of electronic products being higher and higher, the bifurcated line of the lead is generally thinner and thinner, the color of the bifurcated line of the lead is close to that of the pad, and whether the pad has a tin-connecting short circuit or not is difficult to detect under a magnifying lens.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a circuit board pad short circuit detection device which can detect whether a short circuit fault exists in a circuit board pad.

In a first aspect, an embodiment of the present invention provides a circuit board pad short detection apparatus, including: the power module comprises a power module, an indicator light, an anode lead and a cathode lead, wherein one end of the anode lead is connected with the anode of the power module, the other end of the anode lead is connected with a first bonding pad, one end of the cathode lead is connected with the cathode of the power module, the other end of the cathode lead is connected with a second bonding pad, the first bonding pad is connected with the second bonding pad to be detected, the indicator light is connected in series with the anode of the power module or between the bonding pads, and the indicator light is connected in series with the cathode of the power module and between the bonding pads.

Further, the positive electrode lead and the negative electrode lead comprise a plurality of leads, and each lead is connected in parallel.

Further, power module includes the universal meter, the universal meter positive pole with anodal pin joint, the universal meter negative pole with negative pole pin joint.

Further, the first pad and the second pad are adjacent pads.

Further, the shape of the bonding pad comprises an ellipse, a rectangle or a special shape.

Further, the circuit board includes a PCB board.

The circuit board pad short circuit detection device of the embodiment of the invention at least has the following beneficial effects: whether the adjacent welding disc of the circuit board has short circuit is conveniently and quickly detected, the accuracy is high, and the cost is low.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a short-circuit detection device for a circuit board pad according to the present invention;

FIG. 2 is a schematic structural diagram of a short-circuit detection apparatus for a pad of a circuit board according to another embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a use of a short-circuit detection device for a circuit board pad according to an embodiment of the present invention.

Detailed Description

The concept and technical effects of the present invention will be clearly and completely described below in conjunction with the embodiments to fully understand the objects, features and effects of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and those skilled in the art can obtain other embodiments without inventive effort based on the embodiments of the present invention, and all embodiments are within the protection scope of the present invention.

In the description of the present invention, if an orientation description is referred to, for example, the orientations or positional relationships indicated by "upper", "lower", "front", "rear", "left", "right", etc. are based on the orientations or positional relationships shown in the drawings, only for convenience of describing the present invention and simplifying the description, but not for indicating or implying that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. If a feature is referred to as being "disposed," "secured," "connected," or "mounted" to another feature, it can be directly disposed, secured, or connected to the other feature or indirectly disposed, secured, connected, or mounted to the other feature.

In the description of the embodiments of the present invention, if "a number" is referred to, it means one or more, if "a plurality" is referred to, it means two or more, if "greater than", "less than" or "more than" is referred to, it is understood that the number is not included, and if "greater than", "lower" or "inner" is referred to, it is understood that the number is included. If reference is made to "first" or "second", this should be understood to distinguish between features and not to indicate or imply relative importance or to implicitly indicate the number of indicated features or to implicitly indicate the precedence of the indicated features.

Referring to fig. 1, a schematic structural diagram of a short-circuit detection device for a circuit board pad in an embodiment of the present invention is shown. The method comprises the following steps: the power module 20, the pilot lamp 40, anodal lead wire 31 and negative pole lead wire 32, power module 20 and pilot lamp 40 are established ties, the anodal one end and the power module 20 anodal of anodal lead wire 31 are connected, the other end and the first pad (11, 13, 15) of anodal lead wire 31 are connected, the one end and the power module 20 negative pole of negative pole lead wire 31 are connected, the other end and the second pad (12, 14) of negative pole lead wire 32 are connected, first pad (11, 13, 15) and second pad (12, 14) are the pad of waiting to detect.

The power module and the indicator light form a plurality of series loops, and the indicator light can give out a prompt as long as a group of adjacent pads are short-circuited.

When the two bonding pads to be detected are short-circuited, the power module 20, the indicator lamp 40, the anode lead 31 and the cathode lead 32 are conducted with the bonding pads, the indicator lamp is on, the result is visual, and the detection result is convenient.

In one embodiment, the power module is a multimeter, the anode of the multimeter is connected with the anode lead, the cathode of the multimeter is connected with the cathode lead, the multimeter is switched to a conducting state when in use, when a pad is in short circuit, not only is an indicator light on, but also a buzzer built in the multimeter can give an alarm, and the embodiment of the invention is particularly suitable for detecting whether a short circuit phenomenon exists between adjacent pads.

It is understood that the embodiment of the present invention may be used to detect a plurality of pads, and is not limited to the number of pads shown in fig. 1, and the device in the embodiment of the present invention may be used to detect as long as the adjacent pads are different electrodes, and further, if the adjacent pads are the same-pole pads, the adjacent pads may be the same connection point, and whether there is a short circuit between another adjacent non-peer pad may be detected.

As shown in FIG. 2, in another embodiment, the short-circuit detection device comprises indicator lamps 41-45 which are respectively connected in series between each pad and the power supply module, and during detection, the corresponding short-circuit pad can be positioned according to the indicator lamps.

In the embodiment of the invention, the circuit board comprises a PCB board, and the shape of the bonding pad comprises but is not limited to an ellipse, a rectangle or a special shape.

The embodiment of the invention is particularly suitable for detecting whether short circuit phenomenon exists between the pads which are packaged and invisible, such as a plug and the like, and can detect only by connecting the device with two contacts of the plug as shown in figure 3.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.

Claims

1. A circuit board pad short circuit detection device, comprising:

the power module comprises a power module, an indicator light, a positive lead and a negative lead, wherein one end of the positive lead is connected with the positive pole of the power module, the other end of the positive lead is connected with a first bonding pad, one end of the negative lead is connected with the negative pole of the power module, the other end of the negative lead is connected with a second bonding pad, the first bonding pad is connected with the second bonding pad to be detected, the indicator light is connected in series with the positive pole of the power module and between the bonding pad leads and/or the indicator light is connected in series with the negative pole of the power module and between the bonding pads.

2. The apparatus as claimed in claim 1, wherein the positive and negative leads are connected in parallel.

3. The short circuit detection device for circuit board pads according to claim 1, wherein the power module comprises a multimeter, the positive electrode of the multimeter is connected with the positive lead, and the negative electrode of the multimeter is connected with the negative lead.

4. The apparatus as claimed in claim 1, wherein the first pad and the second pad are adjacent pads.

5. A device for detecting short circuit of circuit board pad according to any one of claims 1 to 4, wherein said pad has an oval, rectangular or irregular shape.

6. The device for detecting short circuit of circuit board pad according to any one of claims 1 to 4, wherein the circuit board comprises a PCB board.