CN208999480U - A kind of multi-purpose vehicle(MPV) test pencil of display with voltage - Google Patents
A kind of multi-purpose vehicle(MPV) test pencil of display with voltage Download PDFInfo
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- CN208999480U CN208999480U CN201821713526.4U CN201821713526U CN208999480U CN 208999480 U CN208999480 U CN 208999480U CN 201821713526 U CN201821713526 U CN 201821713526U CN 208999480 U CN208999480 U CN 208999480U
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Abstract
The utility model belongs to survey electric equipment technical field, is related to a kind of multi-purpose vehicle(MPV) test pencil of display with voltage, including bulb, three three Duan Kaiguan, liquid crystal voltage table, clip and test lead；Described three three sections of switches are set there are three wiring point, and an end of light bulb is connected to first wiring point of three three sections of switches, and the other end connects with test lead；One end of liquid crystal voltage table connects with test lead, another third wiring point for being terminated at three three sections of switches；Second wiring point of three three sections of switches connects with clip, and when described three three sections of switches are in first, the first wiring point and the second wiring point are connected；When in second, three wiring points are mutually connected；When in third position, the second wiring point and third wiring point are connected.It is improved on the basis of traditional test pencil, making test pencil tool, there are three types of changeable measurement patterns.
Description
Technical field
The utility model belongs to survey electric equipment technical field, is related to a kind of multi-purpose vehicle(MPV) test pencil of display with voltage.
Background technique
Currently, charging equipment maintenance or work progress in and people in home life repair circuit, it is usually used
Test pencil comes whether judgment object charges, and common test pencil generally comprises test contact, neon tube, resistance, spring, hand touched electrode
Etc. structures, test contact, neon tube, resistance, spring and hand touched electrode be connected in series.
In use, after test contact and object under test contact, with hand over hand touched electrode, object under test by test pencil,
A potential difference is formed between human body and the earth, generates electric field, and the neon tube in test pencil will shine under electric field action.If
Neon tube luminous illustrates that the object under test charges, and the test lead is firewire；If neon tube does not shine, illustrate the determinand
Body is not charged or the test lead is zero curve.
Utility model content
The purpose of the utility model is to provide a kind of multi-purpose vehicle(MPV) test pencils of display with voltage, in traditional test pencil
On the basis of improve, making test pencil tool, there are three types of changeable measurement patterns.
The technical solution that the utility model adopts sum is as follows:
A kind of multi-purpose vehicle(MPV) test pencil of display with voltage, including bulb, three three Duan Kaiguan, liquid crystal voltage are provided
Table, clip and test lead；Described three three sections of switches are set there are three wiring point, and an end of light bulb is connected to the of three three sections of switches
One wiring point, the other end connect with test lead；One end of liquid crystal voltage table connects with test lead, another to be terminated at three three sections
The third wiring point of switch；Second wiring point of three three sections of switches connects with clip.
Further, when described three three sections of switches are in first, the first wiring point and the second wiring point are connected；It is in
When second, three wiring points are mutually connected；When in third position, the second wiring point and third wiring point are connected.
Further include stylus lead and stylus in one embodiment of above-mentioned technical proposal, stylus lead one end with
Second wiring point connects, another to be terminated at stylus.Clip is improved, surveys the parallel connection stylus of one band stylus in clip
Lead changes the shortcomings that clip cannot test automotive wire bundle plug
In one embodiment of above-mentioned technical proposal, the light bulb is the bulb of operating voltage 12V, power 5W.
The utility model substitutes current light emitting diode with the light bulb of a 12V/5W, since the duty factor of light bulb shines
Diode is big, when circuit-under-test has poor contact, because of the effect of the load of light bulb, can accurately in decision circuitry whether
There is the phenomenon of the failure of " virtual connection ", " empty voltage ", and it is traditional using light emitting diode because not having this characteristic of light bulb,
So not having this arbitration functions.The voltage value that carries out at the position of route survey can be shown, so as to avoid
Traditional test pencil the shortcomings that substantially judging voltage, improves accuracy by test pencil light emission luminance.Test pencil can not also be accessed
Bulb load, it is single to be used as voltmeter.
Detailed description of the invention
Fig. 1 is circuit diagram of the test pencil of embodiment when three three sections of switches are in first.
Fig. 2 is circuit diagram of the test pencil of embodiment when three three sections of switches are in second.
Fig. 3 is circuit diagram of the test pencil of embodiment when three three sections of switches are in third position.
Specific embodiment
Below in conjunction with attached drawing and specific embodiment, the utility model is described in further detail, makes the skill of this field
Art personnel can become apparent from and be fully understood by the technical solution of the utility model.
As shown in Figure 1-3, the present embodiment is a kind of multi-purpose vehicle(MPV) test pencil of display with voltage, including bulb 2, three
The three sections of switches 3 in position, liquid crystal voltage table 4, clip 5, test lead 1 and stylus 6, three three sections of switches 3 set there are three wiring point, light bulb
An end be connected to the first wiring point 3a of three three sections of switches, the other end connects with test lead 1；One end of liquid crystal voltage table 4 with
Connect with test lead 1, another third wiring point 3c for being terminated at three three sections of switches 3；Second wiring point of three three sections of switches 2
3b connects with clip.Stylus 6 is connected by stylus lead with the second wiring point 3b, is arranged in parallel with clip 5.Wherein light bulb 2 is
The bulb of operating voltage 12V, power 5W.
As shown in Figure 1, the first wiring point and the second wiring point are connected, at this time when three three sections of switches are in first
Formula mode is surveyed for the first, pure light bulb surveys formula circuit, and liquid crystal voltage table does not work.
As shown in Fig. 2, three wiring points are mutually connected, and are at this time second when three three sections of switches are in second
Survey formula mode, liquid crystal voltage table and bulb and translocation formula, can show voltage while accessing bulb load.
As shown in figure 3, the second wiring point and third wiring point are connected, at this time when three three sections of switches are in third position
Formula module is surveyed for the third, in the case that circuit does not access bulb load, voltage is only measured and shows.
By three three sections of conversions opened on test pencil, switched over to be surveyed between formula mode at these three.
The technical solution of the utility model that the above embodiments are only used to help understand, should not be construed as to this reality
With novel limitation.According to simple replacement and deformation that the technical solution of the utility model is done, the utility model power is still fallen within
The protection scope that benefit requires and specification is covered.
Claims (4)
1. a kind of multi-purpose vehicle(MPV) test pencil of display with voltage, characterized in that including bulb, three three Duan Kaiguan, liquid crystal electricity
Press table, clip and test lead；Described three three sections of switches are set there are three wiring point, and an end of light bulb is connected to three three sections of switches
First wiring point, the other end connect with test lead；One end of liquid crystal voltage table connects with test lead, another to be terminated at three three sections
The third wiring point of switch；Second wiring point of three three sections of switches connects with clip.
2. the multi-purpose vehicle(MPV) test pencil of display with voltage according to claim 1, characterized in that described three three sections are opened
When pass is in first, the first wiring point and the second wiring point are connected；When in second, three wiring points are mutually connected；Place
When third position, the second wiring point and third wiring point are connected.
3. the multi-purpose vehicle(MPV) test pencil of display with voltage according to claim 1, characterized in that further include stylus lead
And stylus, stylus lead one end connects with the second wiring point, another to be terminated at stylus.
4. the multi-purpose vehicle(MPV) test pencil of display with voltage according to claim 1, characterized in that the light bulb is work
The bulb of voltage 12V, power 5W.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713526.4U CN208999480U (en) | 2018-10-22 | 2018-10-22 | A kind of multi-purpose vehicle(MPV) test pencil of display with voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821713526.4U CN208999480U (en) | 2018-10-22 | 2018-10-22 | A kind of multi-purpose vehicle(MPV) test pencil of display with voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208999480U true CN208999480U (en) | 2019-06-18 |
Family
ID=66805317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821713526.4U Active CN208999480U (en) | 2018-10-22 | 2018-10-22 | A kind of multi-purpose vehicle(MPV) test pencil of display with voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208999480U (en) |
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2018
- 2018-10-22 CN CN201821713526.4U patent/CN208999480U/en active Active
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