CN209056133U - A kind of double graph paper Experiment of Static Field Description devices - Google Patents

Abstract

The utility model discloses a kind of double graph paper Experiment of Static Field Description devices, and a pair of electrodes model is fixedly mounted on the plastic packaging graph paper that a transparent sink bottom is posted, and inject water, are applied on two electrode models with regulated power supply output DC voltage.The probe connected with Digital direct current voltage meter, measures idiostatic many points between two electrodes, reads the coordinate of each point, mark on the respective coordinates point of no plastic packaging graph paper immediately；It finally draws each point connecting line and forms equipotential line, draw electric field line accordingly, easily describe electrostatic field.

Description

A kind of double graph paper Experiment of Static Field Description devices

Technical field

The utility model belongs to experiment device for teaching, and more specifically, it belongs to a kind of quiet in universities and colleges' Physical Experiment Electric field describes experiment device for teaching.

Background technique

Electric field strength and potential are two fundamental physical quantities for characterizing Electric Field Characteristics, in order to visually indicate electrostatic field, often It is orthogonal everywhere with equipotential line to describe electrostatic field electric field line using electric field line and equipotential line, therefore has the figure of equipotential line just The distribution map of electric field line can substantially be drawn.

From electromagnetic theory, the potential of the electrostatic field in the isotropism uniform dielectric of no free charge distribution, With the potential of steady high voltage system in the isotropism uniform conductor without power supply, the physics law that the two is deferred to is having the same For mathematic(al) representation under identical boundary condition, the Potential Distributing of both is similar, as long as therefore select suitable model, Removing analog electrostatic field with steady high voltage system under certain condition is feasible

General at present using experimental analogic method is the electric field for flowing through the conductive paper of steady current uniformly in bad conducting medium Carry out analog electrostatic field.Due to conductive paper quality problems, electric conductivity can be uneven；Electrode and conductive paper contact problems obtain ideal It is more difficult to simulate electric field.

Summary of the invention

In view of the above problems, that the purpose of this utility model is to provide a kind of structures is simple, easily operated, can be more true Describe the analog electrostatic field drawing apparatus of analog electrostatic field distribution in ground.

The technical scheme adopted by the utility model to solve the technical problem is as follows: planting double graph paper Experiment of Static Field Description dresses It sets, including transparent sink, D.C. regulated power supply, Digital direct current voltage meter and probe；Post plastic packaging in the transparent sink bottom First electrode and second electrode is fixedly mounted in graph paper thereon；The anode of the first electrode connection D.C. regulated power supply, the The cathode of two electrodes connection D.C. regulated power supply；The cathode of the Digital direct current voltage meter connects second electrode, anode connection Probe.

It further, further include no plastic packaging graph paper, the size and size of no plastic packaging graph paper are consistent with plastic packaging graph paper.

Further, the plastic packaging graph paper and be lattice graph paper without plastic packaging graph paper.

Further, jack is provided in the first electrode and second electrode.

Further, the transparent sink is made of transparent plastics material.

Further, in a ring, first electrode is cylindrical for the second electrode, is fixed on the center of circle position of the second electrode It sets.

Further, first electrode and second electrode are cylindrical.

Further, first electrode is cylindrical, and second electrode is in be in strip, and the first electrode is located at second electrode On perpendicular bisector.

Due to the adoption of the above technical scheme, which has the following beneficial effects:

1. apparatus structure is novel, compact and reasonable, describe student with double graph paper Experiment of Static Field Description device measurements quiet Electric field is easy to；

2. the survey of a variety of Different electrodes models can be carried out as long as the transparent sink for changing Different electrodes model with expansion experiments Amount describes electrostatic field experiment, extends student knowledge.

Detailed description of the invention

Fig. 1 is a kind of analog coaxial cable Experiment of Static Field Description apparatus structure schematic diagram of the utility model；

In figure: 1, transparent sink；2, plastic packaging graph paper；3, first electrode；4, second electrode；5 ,+jack；6, jack；7, Digital direct current voltage meter；8, D.C. regulated power supply；9, probe；10, plug wires；11, without plastic packaging graph paper.

Fig. 2 a is to simulate parallel long straight conductor static field description transparent sink schematic diagram；

Fig. 2 b is to simulate parallel long straight conductor electrostatic field schematic diagram；

Fig. 3 a is simulation long straight conductor and parallel plate electrode static field description transparent sink schematic diagram；

Fig. 3 b is simulation long straight conductor and parallel plate electrode electrostatic field schematic diagram；

Fig. 4 a is that analog focus electrode electrostatic field describes transparent sink schematic diagram；

Fig. 4 b is analog focus electrode electrostatic field schematic diagram.

Specific embodiment

As shown in Figure 1, a kind of double graph paper Experiment of Static Field Description devices, using analog coaxial cable electrostatic field, including First electrode 4, second electrode 3 is fixedly mounted, saturating in transparent sink 1 on the plastic packaging graph paper 2 that 1 bottom of transparent sink is posted Bright sink 1 injects suitable quantity of water, applies DC voltage on the first and second electrode with regulated power supply 8.It is defeated with Digital direct current voltage meter 7- Enter end plug wires 10 be connected to second electrode 4-jack 6 ,+input terminal be wired to probe 9, probe 9 is inserted vertically Enter between the first and second electrode in water, measure the coordinate with same potential each point one by one, at another standby one without the identical size of plastic packaging It marks on the same coordinate point of graph paper 11；After looking for out multiple spot, the distribution of given electrode model equipotential line is just obtained, into one Step draws out the field distribution curve of the electrostatic field of electrode model.

Further, the transparent sink 1 is with transparent plastic institute at the lattice of plastic packaging film is pasted in the upper surface of bottom Graph paper 2.It punches again and wears first electrode 4, second electrode 3 made of screw fixed installation corrosion resistant metal.

Further, the first electrode 4, second electrode 3, their shapes can factually test demand and be process, and commonly use class Type has: the electrode models such as coaxial cable, parallel long straight conductor electrode, two parallel plate electrodes and focusing electrode.One transparent A kind of type electrode model is only installed in sink.

Further, there is one+jack 5 in the first electrode 4, have one-jack 6 in second electrode 3, for connecting Digital direct current voltage meter 7 and D.C. regulated power supply 8.

Fig. 2 a is to simulate parallel long straight conductor static field description transparent sink schematic diagram；Fig. 2 b is its electric field schematic diagram；

Fig. 3 a is simulation long straight conductor and parallel plate electrode static field description transparent sink schematic diagram；Fig. 3 b is its electric field Schematic diagram；

Fig. 4 a is that analog focus electrode electrostatic field describes transparent sink schematic diagram；Fig. 4 b is its electric field schematic diagram.

Finally, it is also noted that listed above is only a specific embodiment of the utility model.Obviously, this reality With it is novel can also there are many deformation, those skilled in the art can directly be exported from content disclosed by the utility model or All deformations associated, are considered as the protection scope of the utility model.

Claims (8)

1. a kind of double graph paper Experiment of Static Field Description devices, which is characterized in that including transparent sink (1), D.C. regulated power supply (8), Digital direct current voltage meter (7) and probe (9)；Plastic packaging graph paper (2) are posted in described transparent sink (1) bottom, solid thereon Dingan County fills first electrode (4) and second electrode (3)；The anode of first electrode (4) connection D.C. regulated power supply (8), the Two electrodes (3) connect the cathode of D.C. regulated power supply (8)；The cathode of the Digital direct current voltage meter (7) connects second electrode (3), positive linking probe (9).

2. the apparatus according to claim 1, which is characterized in that further include no plastic packaging graph paper (11), no plastic packaging graph paper (11) size and size and plastic packaging graph paper (2) is consistent.

3. the apparatus of claim 2, which is characterized in that the plastic packaging graph paper (2) and without plastic packaging graph paper (11) It is lattice graph paper.

4. the apparatus according to claim 1, which is characterized in that be respectively provided in the first electrode (4) and second electrode (3) There is jack.

5. the apparatus according to claim 1, which is characterized in that the transparent sink (1) is made of transparent plastics material.

6. the apparatus according to claim 1, which is characterized in that in a ring, first electrode (4) is in the second electrode (3) Cylindricality is fixed on the center location of the second electrode (3).

7. the apparatus according to claim 1, which is characterized in that first electrode (4) and second electrode (3) are cylindrical.

8. the apparatus according to claim 1, which is characterized in that first electrode (4) is cylindrical, and second electrode (3) is in into item Shape, and the first electrode (4) is located on the perpendicular bisector of second electrode (3).