CN203149017U - Common-mode voltage testing tool - Google Patents
Common-mode voltage testing tool Download PDFInfo
- Publication number
- CN203149017U CN203149017U CN 201320156355 CN201320156355U CN203149017U CN 203149017 U CN203149017 U CN 203149017U CN 201320156355 CN201320156355 CN 201320156355 CN 201320156355 U CN201320156355 U CN 201320156355U CN 203149017 U CN203149017 U CN 203149017U
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- mode voltage
- common mode
- measurement jig
- voltage measurement
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Abstract
The utility model discloses a common-mode voltage testing tool including a pedestal, a top cover buckled with the pedestal, an AC plug pin arranged on the pedestal, an AC switch used for controlling the switching of an external AC power source, an isolation transformer used for performing isolation transformation on the external AC power source, a resistor element used for reducing voltage after the transformation, an AC voltage meter used for obtaining voltage value, an oscilloprobe used for connecting with an external oscilloscope for obtaining voltage wave shapes and a ground block used for making the whole common-mode voltage testing tool in ground connection. The common-mode voltage testing tool provided by the utility model is simple in structure, low in cost and high in testing efficiency.
Description
Technical field
The utility model relates to a kind of measurement jig of electron device, relates in particular to a kind of for the common mode voltage measurement jig that charger is detected such as charger for mobile phone.
Background technology
As everyone knows, current, adopt the mobile phone of capacitance plate to become the market mainstream.When the mobile phone that adopts capacitance plate is charged, need guarantee that charger has stable charging voltage, therefore more strict electricity function index requirement is proposed charger.For this reason, need carry out strictness to charger for mobile phone and detect, whether satisfy specific electricity function index to judge it.
The available technology adopting standard instrument, just spectrum analyzer comes charger for mobile phone is tested.Yet, on the one hand, spectrum analyzer expensive, thereby cause producing and R﹠D process in testing cost too high; On the other hand, therefore this spectrum analyzer complex structure causes operating process loaded down with trivial details, and then has influenced the testing efficiency of charger for mobile phone greatly.
Therefore, be necessary to provide a kind of improved for the device that charger for mobile phone is checked.
The utility model content
Technical problem to be solved in the utility model is to provide a kind of simple in structure, cheap and common mode voltage measurement jig that testing efficiency is high.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: a kind of common mode voltage measurement jig comprises: base, the top cover that fastens with base, be arranged on the interchange pin on the described base, the alternating-current switch that is used for control external ac power source break-make, be used for external ac power source is isolated the isolating transformer of transformation, be used for the resistive element of step-down again of the voltage after the transformation, be used for obtaining the A.C. voltmeter of voltage value, be used for being connected in order to obtain the oscilloprobe of voltage waveform and be used for allowing the ground connection piece of whole tool ground connection with outside oscillograph.
Compared with prior art, the utility model possesses following beneficial effect: owing to only adopted the electron device of limited quantity to realize fast accurate testing such as A.C. voltmeter, resistive element etc. and by cooperating with oscillograph, therefore simplify the structure of measurement jig greatly, effectively improved the testing efficiency of charger for mobile phone simultaneously.
Description of drawings
The three-dimensional exploded view of the common mode voltage measurement jig that Fig. 1 provides for the utility model; And
Fig. 2 is the three-dimensional assembly diagram of common mode voltage measurement jig shown in Figure 1.
Embodiment
Provide a kind of common mode voltage measurement jig at the utility model, be used for electron device such as charger for mobile phone, detect such as common mode voltage in particular for the electricity function index of charger for mobile phone that the mobile phone that has adopted capacitance plate is charged.In the utility model, utilize simple electronic device to form complete measurement jig such as A.C. voltmeter, resistive element, ground connection piece, isolating transformer etc., and by cooperate the common mode voltage testing that has realized fast accurate charger for mobile phone with oscillograph, obviously simplify the structure of measurement jig, effectively improved testing efficiency simultaneously.
Below in conjunction with drawings and Examples the utility model is further described.
With reference to figure 1-Fig. 2, the common mode voltage measurement jig 100 that the utility model provides comprises base 9, fasten the top cover 7 of getting up with base 9, the interchange pin 2 that is arranged on the described base 9 and inserts for the plug of charger for mobile phone, the alternating-current switch 1 that is used for control external ac power source break-make, be used for external ac power source is isolated the isolating transformer 3 of transformation, be used for the resistive element 5 of step-down again of the voltage after the transformation, be used for obtaining the A.C. voltmeter 4 of voltage value, be used for being connected in order to obtain the oscilloprobe 6 of voltage waveform and be used for allowing the ground connection piece 8 of whole tool ground connection with outside oscillograph.
Concrete test is summarized as follows:
At first the contact pin (not shown) of tested charger for mobile phone is inserted and exchanged pin 2, output terminal with charger for mobile phone is connected with the mobile phone of duty factor such as needs charging then, then measurement jig 100 is connected with oscillograph ground wire (not shown) by above-mentioned ground connection piece 8, subsequently above-mentioned oscilloprobe 6 is connected with oscillograph, then oscillographic mode of operation is adjusted into the DC test pattern, and it is wide that its bandwidth is arranged filled band.Because above-mentioned tool 100 electrically connects with oscillograph, therefore oscillograph shows the voltage waveform of test, by Wave data is analyzed, such as by checking waveform ceiling voltage fluctuation point, launch oscillogram then, record test data and finish test job, testing result is learnt in final analysis, that is, determine finally whether charger for mobile phone can export stable common mode voltage.
In the structure of above-mentioned tool 100, alternating-current switch 1 is used for control external ac power source break-make; Isolating transformer 3 is used for external ac power source is isolated transformation, such as reducing voltage; Resistive element 5 is used for the step-down again of the voltage after the transformation; A.C. voltmeter 4 is used for obtaining voltage readings; Oscilloprobe 6 is used for being connected in order to obtain voltage waveform with outside oscillograph; And ground connection piece 8 is used for allowing whole tool ground connection by being connected with oscillographic ground wire.
In the utility model, utilize simple electronic device to form measurement jig such as A.C. voltmeter, resistive element, ground connection piece, isolating transformer etc., by having realized fast the common mode voltage testing of charger for mobile phone accurately with oscillographic the cooperation, namely, determine whether charger for mobile phone can export stable common mode voltage, therefore obviously simplify the structure of measurement jig, effectively improved testing efficiency simultaneously.
Preferably, described top cover 7 comprises that top board 72 reaches the annular side plate 74 that extends to form from the periphery of top board 72 downwards.Offering first perforate 722 of exposing for alternating-current switch 1 on the described top board 72 reaches for second perforate 724 that allows described A.C. voltmeter 4 expose from top cover 7 inside.
Offer be used to the window 742 that allows described interchange pin 2 expose from top cover 7 inside on the described side plate 74.
Described isolating transformer 3 is arranged on the inside of top cover 7; Described resistive element 5 is arranged on the top board 72 of top cover 7; Described ground connection piece 8 is installed on the described side plate 74.
Preferably, described resistive element 5 is metal resistor element, adopts metal material to do resistance and can realize accurate step-down.Further preferably, the resistance value of described metal resistor element is 10 ohm.
Therefore; above-described embodiment is the utility model preferred implementation; but not merely be restricted to the described embodiments; other any do not deviate from change, the modification done under spiritual essence of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, all be included within the protection domain of the present utility model.
Claims (8)
1. common mode voltage measurement jig is characterized in that comprising: base, the top cover that fastens with base, be arranged on interchange pin on the described base, be used for control external ac power source break-make alternating-current switch, be used for to external ac power source isolate transformation isolating transformer, be used for to the voltage after the transformation again step-down resistive element, be used for obtaining voltage value A.C. voltmeter, be used for being connected with outside oscillograph in order to obtain the oscilloprobe of voltage waveform and for allowing the ground connection piece of whole tool ground connection.
2. common mode voltage measurement jig according to claim 1 is characterized in that: described top cover comprises top board and the annular side plate that extends to form from the periphery of top board downwards; Offering first perforate of exposing for alternating-current switch on the top board reaches for second perforate that allows described A.C. voltmeter expose from top cover inside.
3. common mode voltage measurement jig according to claim 2 is characterized in that: offer on the described side plate be used to the window that allows described interchange pin expose from top cover inside.
4. common mode voltage measurement jig according to claim 2, it is characterized in that: described isolating transformer is arranged on the inside of top cover.
5. common mode voltage measurement jig according to claim 2, it is characterized in that: described resistive element is arranged on the top board of top cover.
6. common mode voltage measurement jig according to claim 2, it is characterized in that: described ground connection piece is installed on the described side plate.
7. common mode voltage measurement jig according to claim 1, it is characterized in that: described resistive element is metal resistor element.
8. common mode voltage measurement jig according to claim 7, it is characterized in that: the resistance value of described metal resistor element is 10 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156355 CN203149017U (en) | 2013-03-29 | 2013-03-29 | Common-mode voltage testing tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320156355 CN203149017U (en) | 2013-03-29 | 2013-03-29 | Common-mode voltage testing tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203149017U true CN203149017U (en) | 2013-08-21 |
Family
ID=48976533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320156355 Expired - Fee Related CN203149017U (en) | 2013-03-29 | 2013-03-29 | Common-mode voltage testing tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203149017U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383279A (en) * | 2016-08-31 | 2017-02-08 | 江门市智尊科技电子有限公司 | Conduction common-mode detector |
-
2013
- 2013-03-29 CN CN 201320156355 patent/CN203149017U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106383279A (en) * | 2016-08-31 | 2017-02-08 | 江门市智尊科技电子有限公司 | Conduction common-mode detector |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: Pinghu street Longgang District of Shenzhen City, Guangdong Province on the 518000 ancient community of New River Road No. 38 Building 1 floor, 103 floor, 3 floor, 2 204 301, 302, 303, 4, 403 floor 402 Patentee after: Shenzhen Kunxing Technology Co., Ltd. Address before: Baoan District Xixiang street Shenzhen city Guangdong province 518000 after community Xinrui Industrial Park building D Patentee before: Shenzhen Kunxing Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130821 Termination date: 20170329 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |