CN202486193U - Direct current pincerlike meter used for measuring direct current - Google Patents
Direct current pincerlike meter used for measuring direct current Download PDFInfo
- Publication number
- CN202486193U CN202486193U CN2011205050954U CN201120505095U CN202486193U CN 202486193 U CN202486193 U CN 202486193U CN 2011205050954 U CN2011205050954 U CN 2011205050954U CN 201120505095 U CN201120505095 U CN 201120505095U CN 202486193 U CN202486193 U CN 202486193U
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- China
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- direct current
- current
- pincerlike meter
- power supply
- annular magnet
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Abstract
The utility model belongs to the electric measuring tool technology field, and discloses a direct current pincerlike meter used for measuring the direct current. The direct current pincerlike meter is characterized in that the meter includes a fixed annular magnetic body (1), a movable annular magnetic body (2), a deflecting coil (3), a return spring (7), an adjustable potentiometer (4), a direct current power supply (5), and a power supply switch (6); the fixed annular magnetic body (1) is connected with the movable annular magnetic body (2) to form a magnetic field passage; the deflecting coil (3) is arranged between the N and S poles of the magnetic field passage; the deflecting coil (3) is connected with the power supply switch (6) via the adjustable potentiometer (4) and the direct current power supply (5). The direct current pincerlike meter can measure the discharging current of a big tractor storage battery, the starting current of a starter, and the working current of other electric elements without cutting off the circuit, so the operation is easy and is time-saving and labor-saving, and consequently the working efficiency is improved, and the big tractor production and maintenance becomes convenient. The direct current pincerlike meter is especially suitable for the direct current electric device measurement.
Description
Technical field
The invention belongs to the electrical measurement technical field of tools, be particularly useful for a kind of direct current pincerlike meter that is used to measure DC current of dc current measurement.
Background technology
At present, existing clamp on amperemeter can be advantageously used in the measurement to alternating current.It is combined by current transformer and reometer usually.The iron core of current transformer can open; The lead that tested electric current passed through can cut off just can pass open breach unshakable in one's determination; After closure unshakable in one's determination, pass the primary winding that circuit-under-test lead unshakable in one's determination becomes current transformer, wherein just in secondary coil, induce electric current through electric current; Thereby the reometer that secondary coil is connected indicates the size of electric current, promptly measures the electric current of test line.
But direct current does not have alternating magnetic field, can not in secondary coil, induce electric current, makes at present when measuring DC current, can only circuit to be cut off, and the reometer place in circuit of connecting is measured, and gives to produce and maintenance brings inconvenience.
Summary of the invention
To the above-mentioned technical barrier that has direct current measurement; The utility model provides a kind of direct current pincerlike meter that is used to measure DC current; Can measure the electric current of direct current closed-loop path easily as exchanging pincerlike meter, successfully solve not line disconnection and measured this a great problem of DC current.Have easy to operately, saving of work and time has improved work efficiency, gives and drags productions greatly, keeps in repair and brought convenience.
For realizing aforesaid goal of the invention, the utility model adopts following technical scheme:
A kind of direct current pincerlike meter that is used to measure DC current comprises: stationary annular magnet, movable annular magnet, deflection coil, retracing spring, adjustable potentiometer, direct supply and power switch; The closed formation of said stationary annular magnet and movable annular magnet magnetic field path is provided with deflection coil between the magnetic pole N of magnetic field path, the S, and deflection coil links to each other with power switch through adjustable potentiometer, direct supply.
A kind of direct current pincerlike meter that is used to measure DC current, said movable annular magnet are made up of through retracing spring and fixed magnets opening shape magnet and open mechanism.
Owing to adopt aforesaid technical scheme, the utlity model has following superiority:
A kind of direct current pincerlike meter that is used to measure DC current; Can be to large tractor battery discharging electric current, starter starting current, each does not cut off circuit measuring with the electric device working current; Easy to operate; Saving of work and time has improved work efficiency, gives and drags production, maintenance to bring convenience greatly.The utility model direct current pincerlike meter particularly suitable is promoted in the field of measurement of direct-flow current consumer.
Description of drawings
Fig. 1 is a direct current pincerlike meter structural representation;
Among the figure: 1-stationary annular magnet, 2-movable annular magnet, 3-deflection coil, 4-adjustable potentiometer, 5-galvanic current source, 6-power switch, 7-retracing spring.
Embodiment
The utility model is explained with the embodiment that provides in conjunction with accompanying drawing.
As shown in Figure 1: a kind of direct current pincerlike meter that is used to measure DC current; Comprise: stationary annular magnet 1, movable annular magnet 2, deflection coil 3, retracing spring 7, adjustable potentiometer 4, direct supply 5 and power switch 6; Said stationary annular magnet 1 and movable annular magnet 2 closed formation magnetic field paths; Be provided with deflection coil 3 between the magnetic pole N of magnetic field path, the S, deflection coil 3 links to each other with power switch 6 through adjustable potentiometer 4, direct supply 5; Said movable annular magnet 2 is made up of through retracing spring 7 and fixed magnets opening shape magnet and opens mechanism.
When this direct current pincerlike meter is measured, can be as exchanging pincerlike meter, needn't line disconnection just can measure the electric current of direct current closed-loop path easily.
During work, closed power switch 6 is opened the magnetic field path, promptly opens the movable annular magnet 2 unshakable in one's determination of the annular induced magnetism utmost point, blocks tested lead; Be that lead that tested electric current passes through can cut off and just can pass open breach unshakable in one's determination.After movable annular magnet 2 closures unshakable in one's determination, the magnetic field path is closed, and the rotating magnetic field that electric current produces in the tested lead forms N, S two magnetic poles in the path of magnetic field.Make the DC current that produces a stable controlled amount in the deflection coil 3, so that under the effect in magnetic pole S, N magnetic field, overcome the retracing spring resistance, deflection coil 3 deflects, and drives the size that pointer indicates electric current.
Said galvanic current source 5 has guaranteed the stable of the interior electric current of deflection coil.Adjustable potentiometer 4 has guaranteed that the size of electric current in the deflection coil changes by class, can divide many gears accurately to measure the size of electric current in the lead, and circuit is as shown in Figure 1.
Claims (2)
1. direct current pincerlike meter that is used to measure DC current; It is characterized in that: comprising: stationary annular magnet (1), movable annular magnet (2), deflection coil (3), retracing spring (7), adjustable potentiometer (4), direct supply (5) and power switch (6); Said stationary annular magnet (1) and the closed formation of movable annular magnet (2) magnetic field path; Be provided with deflection coil (3) between the magnetic pole N of magnetic field path, the S, deflection coil (3) links to each other with power switch (6) through adjustable potentiometer (4), direct supply (5).
2. a kind of direct current pincerlike meter that is used to measure DC current according to claim 1 is characterized in that: said movable annular magnet (2) opens mechanism by opening shape magnet through retracing spring (7) and fixed magnets formation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205050954U CN202486193U (en) | 2011-12-07 | 2011-12-07 | Direct current pincerlike meter used for measuring direct current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205050954U CN202486193U (en) | 2011-12-07 | 2011-12-07 | Direct current pincerlike meter used for measuring direct current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202486193U true CN202486193U (en) | 2012-10-10 |
Family
ID=46960607
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205050954U Expired - Fee Related CN202486193U (en) | 2011-12-07 | 2011-12-07 | Direct current pincerlike meter used for measuring direct current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202486193U (en) |
-
2011
- 2011-12-07 CN CN2011205050954U patent/CN202486193U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121010 Termination date: 20131207 |