Power supply ripple test auxiliary device and method

Abstract

The invention discloses a power supply ripple test auxiliary device and method, and relates to the technical field of power supply ripple test, and the device comprises a device main body which is an insulator; the device main body is provided with two needling clamps, each needling clamp comprises a clamping piece and a pricking needle, at least one clamping surface of each clamping piece is provided with the pricking needle, and the pricking needles are conductors; the oscilloscope probe connecting piece is electrically connected with the pricking needle, and the oscilloscope probe connecting piece is used for being electrically connected with an oscilloscope probe; and the capacitor connecting piece is electrically connected with the oscilloscope probe connecting piece, and the capacitor connecting piece is used for being connected with a standard ripple test capacitor. According to the invention, the ripple test of the whole power supply can be conveniently, safely, accurately and efficiently executed, research, development, production and detection are facilitated, and companies and authentication test laboratories using the direct current power supply are used for field test.

Description

Technical Field

[0001] The present invention relates to the technical field of ripple testing, and in particular to a power supply ripple testing auxiliary device and method. Background Art

[0002] DC power supply ripple is a critical test item in the power electronics field, crucial for evaluating DC power supply output quality and ensuring reliable operation of electronic products. Existing ripple testing techniques involve using an oscilloscope voltage probe with a grounding spring to directly contact the power supply test points on a circuit board. However, this approach has the following disadvantages: 1. When engineers hold the probe close to the power supply test points, it is difficult to obtain stable sampling, resulting in inaccurate test results. 2. The human body's capacitance introduces additional interference. 3. There is a risk of electric shock, especially when contacting DC voltages exceeding 60V, which can cause personal injury. 4. It is impossible to connect the 10µF and 0.1µF capacitors required by relevant ripple testing standards in parallel between the voltage probe and grounding spring. 5. For complete DC power supply testing, sampling must be performed on the DC output power lines, which are covered with insulation, making board-level testing using an oscilloscope voltage probe with a grounding spring unsuitable.

[0003] Therefore, the applicant has developed a power supply ripple test auxiliary device and method to solve the above problems. Summary of the Invention

[0004] The present invention provides a power supply ripple test auxiliary device and method to solve the problems of inaccurate test results, potential safety hazards and unsuitability for power supply whole machine testing in existing power supply ripple test schemes.

[0005] The present invention achieves the above-mentioned purpose through the following technical solutions: In one aspect, the present invention provides a power supply ripple test auxiliary device, comprising: a device body, the device body being an insulator; Acupuncture clamps: two acupuncture clamps are provided on the main body of the device. The acupuncture clamps include a clamping member and a needle. At least one clamping surface of each clamping member is provided with a needle, and the needle is a conductor; An oscilloscope probe connector, the oscilloscope probe connector is electrically connected to the needle, and the oscilloscope probe connector is used to electrically connect to the oscilloscope probe; The capacitor connector is electrically connected to the oscilloscope probe connector and is used to connect to a standard ripple test capacitor.

[0006] Furthermore, the needles include single needles and dot matrix needle groups.

[0007] Furthermore, the single needle and dot matrix needle groups are arranged front and back.

[0008] Furthermore, the single needle is a pointed cone shape, 3 mm in length, and is used to pierce the insulating sheath of a thick power cord; the dot matrix needle group consists of 20 small needles, each of which is a pointed cone shape, 2 mm in length, and is used to pierce the insulating sheath of a thin power cord.

[0009] Furthermore, the acupuncture clamp is a conductor as a whole, the acupuncture clamp is electrically connected to the oscilloscope probe connector, and the outer sleeve of the force-applying part of the acupuncture clamp is provided with an insulating sleeve.

[0010] Furthermore, the oscilloscope probe connector includes a double-row banana head to BNC female connector, the positive banana plug on the double-row banana head to BNC female connector is electrically connected to the puncture needle of one of the acupuncture clips, the negative banana plug on the double-row banana head to BNC female connector is electrically connected to the puncture needle of the other acupuncture clip, and the BNC female interface on the double-row banana head to BNC female connector is used to connect the oscilloscope probe.

[0011] Furthermore, the oscilloscope probe connector includes two sleeve connectors, which are arranged on the device body, and each needle is electrically connected to a sleeve connector, one of the sleeve connectors is electrically connected to the positive banana plug, and the other sleeve connector is connected to the negative banana plug.

[0012] Furthermore, the capacitor connector includes a double-row banana plug connector, and the positive terminal and the negative terminal of the double-row banana plug connector are respectively used to connect to a standard ripple test capacitor.

[0013] Furthermore, the standard ripple test capacitor includes a first capacitor and a second capacitor connected in parallel, the capacitance value of the first capacitor is 10 microfarads, and the capacitance value of the second capacitor is 0.1 microfarads.

[0014] Furthermore, two acupuncture clamps are respectively arranged on both sides of the device body, and installation grooves for the acupuncture clamps are respectively provided on the two side surfaces of the device body, and power cord limiting grooves are provided in the areas corresponding to the needles on both sides of the device body.

[0015] In another aspect, the present invention provides a power supply ripple test method, which uses the power supply ripple test auxiliary device to perform power supply ripple test, including: Connect the oscilloscope probe connector to the oscilloscope voltage probe; Use the needle in the corresponding acupuncture clamp to pierce the insulation layer of the positive conductor of the DC power supply under test and the negative conductor of the DC power supply under test; Use the needle clamp to clamp the positive wire of the DC power supply being tested and the negative wire of the DC power supply being tested, then turn on the rectifier power supply to test the ripple.

[0016] The beneficial effects of the present invention are: The power supply ripple test auxiliary device proposed in the present invention helps to conveniently, safely, accurately and efficiently perform ripple testing of the entire power supply, and is convenient for companies that develop, produce, test and use DC power supplies and certification test laboratories to use for on-site testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 Schematic diagram of the structure of the power supply ripple test auxiliary device in an embodiment of the present application.

[0018] Figure 2 This is a schematic diagram of the structure of the acupuncture clamp in an embodiment of the present application.

[0019] Figure 3 Schematic diagram of the assembly structure of the capacitor connector and the capacitor in the embodiment of the present application.

[0020] Figure 4 This is a usage status diagram of the power supply ripple test auxiliary device in an embodiment of the present application.

[0021] Figure 5 This is a top view of the power ripple test auxiliary device in an embodiment of the present application.

[0022] In the figure: 1 - device body; 2 - acupuncture clamp; 21 - single needle; 22 - dot matrix needle group; 3 - oscilloscope probe connector; 31 - positive banana plug; 32 - negative banana plug; 33 - sleeve connector; 4 - capacitor connector; 5 - first capacitor; 6 - second capacitor; 7 - mounting slot; 8 - power cord limit slot; 91 - oscilloscope voltage probe; 92 - positive wire of the DC power supply under test; 93 - negative wire of the DC power supply under test. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings of the embodiments of the present invention. It should be understood that the described embodiments are only a portion of the embodiments of the present invention, not all of them. Generally, the components of the embodiments of the present invention described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0026] In the description of the present invention, it should be understood that the terms "upper", "lower", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is conventionally placed when in use, or are the orientations or positional relationships conventionally understood by those skilled in the art. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0028] In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, terms such as "disposed" and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can also mean internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0029] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0030] like Figure 1 As shown, the present invention provides a power supply ripple test auxiliary device, comprising: The device body 1 is an insulator; Acupuncture clamps 2, two acupuncture clamps 2 are provided on the device body 1, and the acupuncture clamps 2 include a clamping member and a needle. At least one clamping surface of each clamping member is provided with a needle, and the needle is a conductor; An oscilloscope probe connector 3, the oscilloscope probe connector 3 is electrically connected to the needle, and the oscilloscope probe connector 3 is used to electrically connect to the oscilloscope probe; Capacitor connector 4 , which is electrically connected to the oscilloscope probe connector 3 , and is used to connect to a standard ripple test capacitor.

[0031] like Figure 2 As shown, in the embodiment of the present application, the needles include a single needle 21 and a dot matrix needle group 22. The single needle 21 can be used to test thicker power cords, and the dot matrix needle group 22 can be used to test thinner power cords, thereby expanding the scope of application of the device.

[0032] like Figure 2As shown, in the embodiment of the present application, the single needle 21 and the dot matrix needle group 22 are arranged in front and back.

[0033] Preferably, in the embodiment of the present application, the single needle is a pointed cone shape, 3 mm in length, and is used to pierce the insulating sheath of a thick power cord; the dot matrix needle group consists of 20 small needles, each of which is a pointed cone shape, 2 mm in length, and is used to pierce the insulating sheath of a thin power cord.

[0034] Preferably, in the embodiment of the present application, the acupuncture clamp 2 is a conductor as a whole, the acupuncture clamp 2 is electrically connected to the oscilloscope probe connector 3, and the outer sleeve of the force-applying part of the acupuncture clamp 2 is provided with an insulating sleeve.

[0035] like Figure 5 As shown, in the embodiment of the present application, the oscilloscope probe connector 3 includes a double-row banana head to BNC female connector, the positive banana plug 31 on the double-row banana head to BNC female connector is electrically connected to the puncture needle of one of the acupuncture clips 2, and the negative banana plug 32 on the double-row banana head to BNC female connector is electrically connected to the puncture needle of the other acupuncture clip 2. The BNC female interface on the double-row banana head to BNC female connector is used to connect the oscilloscope probe.

[0036] like Figure 5 As shown, in the embodiment of the present application, the oscilloscope probe connector 3 includes two sleeve connectors 33, which are arranged on the device body 1. Each needle is electrically connected to a sleeve connector 33, one of the sleeve connectors 33 is electrically connected to the positive banana plug 31, and the other sleeve connector 33 is connected to the negative banana plug 32.

[0037] like Figure 3 As shown, in the embodiment of the present application, the capacitor connector 4 includes a double-row banana plug connector, and the positive terminal and the negative terminal of the double-row banana plug connector are respectively used to connect to a standard ripple test capacitor.

[0038] In this embodiment, the standard ripple test capacitor includes a first capacitor 5 and a second capacitor 6 connected in parallel. The capacitance of the first capacitor 5 is 10 microfarads, and the capacitance of the second capacitor 6 is 0.1 microfarads. This integrates the 10 microfarad capacitor and the 0.1 microfarad capacitor required by IPC9592B, eliminating the need for additional circuitry during testing.

[0039] like Figure 1 As shown in the embodiment of the present application, two acupuncture clamps 2 are respectively provided on either side of the device body 1. Mounting slots 7 for the acupuncture clamps 2 are provided on both sides of the device body 1. Power cord retaining slots 8 are provided on both sides of the device body 1 in the areas corresponding to the needles. This eliminates the need for the operator to manually hold the power cord during testing, preventing the capacitance effect of the human body from introducing additional interference and the risk of electric shock.

[0040] The working process of the present invention is as follows: like Figure 4 The present invention provides a power supply ripple test method, which uses the power supply ripple test auxiliary device to perform power supply ripple test, including: Connect the oscilloscope probe connector 3 to the oscilloscope voltage probe 91, use the corresponding needle in the acupuncture clamp to pierce the insulation layer of the positive conductor 92 of the DC power supply under test and the negative conductor 93 of the DC power supply under test, and clamp the positive conductor 92 of the DC power supply under test and the negative conductor 93 of the DC power supply under test through the acupuncture clamp 2, clamp and limit them in the power line limit grooves on the left and right sides; then turn on the rectifier power supply to test the ripple.

[0041] The advantages of the present invention compared to the prior art are: 1. The needle puncture method is used to pierce the insulation of the power cord with a probe for testing. There is no need to cut the wire. It is convenient and efficient. It is particularly suitable for production lines or power supply test laboratories to perform multiple sample tests in a short period of time.

[0042] 2. The device is fixed to the power cord during testing and reliably connects to the oscilloscope probe. This eliminates the need for engineers to hold the probe during testing, avoiding the influence of human body capacitance effects. It is stable and ensures personal safety.

[0043] 3. The device integrates a 10 microfarad capacitor and a 0.1 microfarad capacitor required by the IPC9592B standard, eliminating the need for additional circuitry during testing.

[0044] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A power supply ripple test auxiliary device, characterized in that: include: The device body is an insulator; Acupuncture clamps: two acupuncture clamps are provided on the main body of the device. The acupuncture clamps include a clamping member and a needle. At least one clamping surface of each clamping member is provided with a needle, and the needle is a conductor; An oscilloscope probe connector, the oscilloscope probe connector is electrically connected to the needle, and the oscilloscope probe connector is used to electrically connect to the oscilloscope probe; The capacitor connector is electrically connected to the oscilloscope probe connector and is used to connect to a standard ripple test capacitor.

2. A power supply ripple test auxiliary device according to claim 1, characterized in that: The needles include single needles and dot matrix needle sets.

3. The power supply ripple test auxiliary device according to claim 2, characterized in that: The single needle is a pointed cone shape with a length of 3mm. The dot matrix needle group consists of 20 small needles, each of which is a pointed cone shape with a length of 2mm.

4. The power supply ripple test auxiliary device according to claim 1, characterized in that: The acupuncture clamp is a conductor as a whole, is electrically connected to the oscilloscope probe connector, and an outer sleeve of the force-applying portion of the acupuncture clamp is provided with an insulating sleeve.

5. The power supply ripple test auxiliary device according to claim 1, characterized in that: The oscilloscope probe connector includes a double-row banana head to BNC female connector. The positive banana plug on the double-row banana head to BNC female connector is electrically connected to the puncture needle of one of the acupuncture clips, and the negative banana plug on the double-row banana head to BNC female connector is electrically connected to the puncture needle of the other acupuncture clip. The BNC female interface on the double-row banana head to BNC female connector is used to connect the oscilloscope probe.

6. The power supply ripple test auxiliary device according to claim 5, characterized in that: The oscilloscope probe connector includes two sleeve connectors, which are arranged on the device body. Each needle is electrically connected to a sleeve connector, one of which is electrically connected to the positive banana plug, and the other is connected to the negative banana plug.

7. The power supply ripple test auxiliary device according to claim 1, characterized in that: The capacitor connection part includes a double-row banana plug connector, wherein the positive terminal and the negative terminal of the double-row banana plug connector are respectively used to connect to a standard ripple test capacitor.

8. The power supply ripple test auxiliary device according to claim 1, characterized in that: The standard ripple test capacitor includes a first capacitor and a second capacitor connected in parallel. The capacitance value of the first capacitor is 10 microfarads, and the capacitance value of the second capacitor is 0.1 microfarads.

9. The power supply ripple test auxiliary device according to claim 1, characterized in that: Two acupuncture clamps are respectively arranged on both sides of the device body. Installation grooves for the acupuncture clamps are respectively provided on the two side surfaces of the device body. Power line limiting grooves are provided on the areas corresponding to the needles on both sides of the device body.

10. A power ripple testing method, characterized in that: A power supply ripple test auxiliary device according to any one of claims 1 to 9 is used to perform a power supply ripple test, comprising: Connect the oscilloscope probe connector to the oscilloscope voltage probe; Use the needle in the corresponding acupuncture clamp to pierce the insulation layer of the positive conductor of the DC power supply under test and the negative conductor of the DC power supply under test; Use the needle clamp to clamp the positive wire of the DC power supply being tested and the negative wire of the DC power supply being tested, then turn on the rectifier power supply to test the ripple.

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