CN210465555U - Device for detecting output ripple noise of power adapter and charger - Google Patents
Device for detecting output ripple noise of power adapter and charger Download PDFInfo
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- CN210465555U CN210465555U CN201921118039.8U CN201921118039U CN210465555U CN 210465555 U CN210465555 U CN 210465555U CN 201921118039 U CN201921118039 U CN 201921118039U CN 210465555 U CN210465555 U CN 210465555U
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- ripple noise
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Abstract
The utility model relates to the technical field of power supply detection, in particular to a device for detecting the output ripple noise of a power supply adapter and a charger, which comprises an oscilloscope, a voltage probe and a connecting piece; the voltage probe is connected with the oscilloscope; the voltage probe comprises a probe and a grounding ring; the connecting piece comprises a metal outer shell and an insulating inner shell; an inserting cavity for inserting the grounding ring is formed in the metal shell; a metal plug hole for being plugged with the probe is formed in the insulating inner shell; a first pin electrically connected with the metal shell is arranged at the bottom of the metal shell; a second pin is arranged at the bottom of the metal shell; the second pin penetrates through the metal shell and is electrically connected with the metal plug hole. The utility model discloses a direct earth loop is pegged graft in the connecting piece to the earth loop lead wire has been cancelled, thereby solved because the earth loop lead wire overlength and can be the problem of introducing peripheral noise and clutter etc. when measurationing, make ripple noise measurement accurate.
Description
Technical Field
The utility model relates to a power supply detection technical field, concretely relates to detect device of power adapter and charger output ripple noise size.
Background
The working principle of the power adapter and the charger is that alternating current is input, then a stable and clean direct current output voltage is obtained at an output end, and the direct current voltage obtained at the output end has an alternating current component because the alternating current is input, the component is called ripple noise, the ripple noise affects the working stability of a terminal system, and the accurate measurement of the ripple noise is particularly important.
The current method for measuring the magnitude of ripple noise is generally as follows: the sampling of the measurement input point of the ripple noise is carried out at the front end of the output load of the test power supply, and then the ripple noise is transmitted to the oscilloscope through the voltage probe, but because the ground loop lead wire of the voltage probe is too long, the noise, the clutter and the like around the voltage probe can be introduced during the measurement, thereby causing the misdetection.
Disclosure of Invention
The utility model aims at the above-mentioned among the prior art not enough, provide a detect power adapter and device of charger output ripple noise size.
The purpose of the utility model is realized through the following technical scheme: a device for detecting the output ripple noise of a power adapter and a charger comprises an oscilloscope, a voltage probe and a connecting piece; the voltage probe is connected with the oscilloscope;
the voltage probe comprises a probe and a grounding ring;
the connecting piece comprises a metal outer shell and an insulating inner shell arranged in the metal outer shell; an inserting cavity for inserting the grounding ring is formed in the metal shell; a metal plug hole for being plugged with the probe is formed in the insulating inner shell;
a first pin electrically connected with the metal shell is arranged at the bottom of the metal shell; a second pin is arranged at the bottom of the metal shell; the second pin penetrates through the metal shell and is electrically connected with the metal plug hole.
The utility model discloses further set up to, metal casing's inner wall is equipped with metal shrapnel.
The utility model discloses further set up as, the material of insulating inner shell is the plastic.
The utility model discloses it is further arranged that the device for detecting the magnitude of ripple noise output by the power adapter and the charger further comprises a capacitor C1 and a capacitor C2 connected in parallel with the capacitor C1; the first pin and the second pin are respectively connected with two ends of a capacitor C1.
The utility model is further arranged that the device for detecting the output ripple noise of the power adapter and the charger also comprises an AC power supply and an electric parameter measuring instrument; the electrical parameter measuring instrument is arranged between the AC power supply and the testing power supply.
The utility model discloses further set up to, be equipped with the switch between electrical parameter measuring apparatu and the test power supply.
The utility model is further arranged that a degaussing module is arranged in the voltage probe; the degaussing module comprises a control circuit and a degaussing circuit; the control circuit is used for controlling the switch of the degaussing circuit.
The utility model has the advantages that: the utility model discloses a direct earth loop is pegged graft in the connecting piece to the earth loop lead wire has been cancelled, thereby solved because the earth loop lead wire overlength and can be the problem of introducing peripheral noise and clutter etc. when measurationing, make ripple noise measurement accurate.
Drawings
The invention is further described with the aid of the accompanying drawings, in which, however, the embodiments do not constitute any limitation to the invention, and for a person skilled in the art, other drawings can be derived from the following drawings without inventive effort.
FIG. 1 is a schematic diagram of the present invention;
FIG. 2 is a schematic structural diagram of the connector of the present invention;
FIG. 3 is a schematic structural diagram of the voltage probe of the present invention;
fig. 4 is a circuit diagram of the demagnetization module of the present invention;
wherein: 1-a voltage probe; 11-a probe; 12-a ground ring; 13-a degaussing module; 2-a connector; 3-an insulating inner shell; 31-metal plug holes; 32-a second pin; 4-a metal housing; 41-a plug cavity; 42-a first pin; 5-metal shrapnel; 6-switch.
Detailed Description
The invention will be further described with reference to the following examples.
As can be seen from fig. 1 to 4; the device for detecting the output ripple noise of the power adapter and the charger comprises an oscilloscope, a voltage probe 1 and a connecting piece 2; the voltage probe 1 is connected with an oscilloscope;
the voltage probe 1 comprises a probe 11 and a grounding ring 12;
the connecting piece 2 comprises a metal outer shell 4 and an insulating inner shell 3 arranged in the metal outer shell 4; an inserting cavity 41 for inserting the grounding ring 12 is formed in the metal shell 4; a metal plug hole 31 for plugging the probe 11 is formed in the insulating inner shell 3;
a first pin 42 electrically connected with the metal shell 4 is arranged at the bottom of the metal shell 4; the bottom of the metal shell 4 is provided with a second pin 32; the second pin 32 penetrates through the metal shell 4 and is electrically connected with the metal jack 31.
Specifically, during measurement, the first pin 42 and the second pin 32 of the connecting element 2 are respectively connected with a test power supply, wherein the test power supply described in this embodiment is a power adapter and a charger, then the voltage probe 1 is plugged into the connecting element 2, wherein the grounding ring 12 is plugged into the plugging cavity 41 and contacts with the inner wall of the plugging cavity 41, that is, the grounding ring 12 contacts with the inner wall of the metal shell 4, the probe 11 is plugged into the metal plugging hole 31 and contacts with the inner wall of the metal plugging hole 31, and then the AC power supply is turned on, so that the test power supply works with load, and accurate ripple noise can be obtained on an oscilloscope; because this embodiment is direct with ground ring 12 pegging graft in connecting piece 2 to the ground ring lead wire has been cancelled, thereby solved because the ground ring lead wire overlength and can introduce the problem of peripheral noise and clutter etc. when measurationing, make ripple noise measurement accurate.
In the device for detecting the output ripple noise of the power adapter and the charger, the inner wall of the metal shell 4 is provided with the metal elastic sheet 5. Through setting up metal shrapnel 5, can be convenient for ground ring 12 and metal casing 4's inner wall to realize the electricity and connect.
In the device for detecting the magnitude of the ripple noise output by the power adapter and the charger, the insulating inner shell 3 is made of plastic. This arrangement facilitates isolation of the metal shell 4 and the metal plug hole 31.
The apparatus for detecting ripple noise output by a power adapter and a charger according to this embodiment further includes a capacitor C1 and a capacitor C2 connected in parallel to the capacitor C1; the first pin 42 and the second pin 32 are respectively connected to two ends of a capacitor C1. The capacitor C1 is an electrolytic capacitor, and the capacitor C2 is a ceramic capacitor, which can filter out the surrounding noise and noise.
The device for detecting the output ripple noise of the power adapter and the charger further comprises an AC power supply and an electrical parameter measuring instrument; the electrical parameter measuring instrument is arranged between the AC power supply and the testing power supply. The electrical parameter measuring instrument is convenient for observing and testing the electrical parameters of the power supply.
In the device for detecting the output ripple noise of the power adapter and the charger of the embodiment, a switch 6 is arranged between the electrical parameter measuring instrument and the test power supply. The device for detecting the output ripple noise of the power adapter and the charger is convenient for a user to turn on and turn off.
In the device for detecting the output ripple noise of the power adapter and the charger according to the embodiment, a degaussing module 13 is arranged in the voltage probe 1; the degaussing module 13 comprises a control circuit and a degaussing circuit; the control circuit is used for controlling a switch 6 of the degaussing circuit. By arranging the control circuit and the degaussing circuit, the magnetic field in the environment is eliminated before the oscilloscope and the voltage probe 1 detect data, and the accuracy of the data is improved.
It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.
Claims (7)
1. The utility model provides a detect power adapter and charger output ripple noise size's device which characterized in that: comprises an oscilloscope, a voltage probe (1) and a connecting piece (2); the voltage probe (1) is connected with an oscilloscope;
the voltage probe (1) comprises a probe (11) and a grounding ring (12);
the connecting piece (2) comprises a metal outer shell (4) and an insulating inner shell (3) arranged in the metal outer shell (4); an inserting cavity (41) for inserting the grounding ring (12) is formed in the metal shell (4); a metal plug hole (31) for being plugged with the probe (11) is formed in the insulating inner shell (3);
a first pin (42) electrically connected with the metal shell (4) is arranged at the bottom of the metal shell (4); a second pin (32) is arranged at the bottom of the metal shell (4); the second pin (32) penetrates through the metal shell (4) and is electrically connected with the metal plug hole (31).
2. The apparatus according to claim 1, wherein the power adapter and the charger output ripple noise level detection unit is further configured to: and the inner wall of the metal shell (4) is provided with a metal elastic sheet (5).
3. The apparatus according to claim 1, wherein the power adapter and the charger output ripple noise level detection unit is further configured to: the insulating inner shell (3) is made of plastic.
4. The apparatus according to claim 1, wherein the power adapter and the charger output ripple noise level detection unit is further configured to: the device for detecting the output ripple noise of the power adapter and the charger further comprises a capacitor C1 and a capacitor C2 connected with the capacitor C1 in parallel; the first pin (42) and the second pin (32) are respectively connected with two ends of a capacitor C1.
5. The apparatus according to claim 1, wherein the power adapter and the charger output ripple noise level detection unit is further configured to: the device for detecting the output ripple noise of the power adapter and the charger further comprises an AC power supply and an electric parameter measuring instrument; the electrical parameter measuring instrument is arranged between the AC power supply and the testing power supply.
6. The apparatus according to claim 5, wherein the power adapter and the charger output ripple noise level detection unit is further configured to: a switch (6) is arranged between the electrical parameter measuring instrument and the testing power supply.
7. The apparatus according to claim 1, wherein the power adapter and the charger output ripple noise level detection unit is further configured to: a degaussing module (13) is arranged in the voltage probe (1); the degaussing module (13) comprises a control circuit and a degaussing circuit; the control circuit is used for controlling a switch (6) of the degaussing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118039.8U CN210465555U (en) | 2019-07-16 | 2019-07-16 | Device for detecting output ripple noise of power adapter and charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921118039.8U CN210465555U (en) | 2019-07-16 | 2019-07-16 | Device for detecting output ripple noise of power adapter and charger |
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| Publication Number | Publication Date |
|---|---|
| CN210465555U true CN210465555U (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921118039.8U Active CN210465555U (en) | 2019-07-16 | 2019-07-16 | Device for detecting output ripple noise of power adapter and charger |
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| CN (1) | CN210465555U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067932A (en) * | 2020-07-10 | 2020-12-11 | 上海钧正网络科技有限公司 | Charger detection system |
-
2019
- 2019-07-16 CN CN201921118039.8U patent/CN210465555U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112067932A (en) * | 2020-07-10 | 2020-12-11 | 上海钧正网络科技有限公司 | Charger detection system |
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