CN2814559Y

CN2814559Y - Electrostatic field analog instrument

Info

Publication number: CN2814559Y
Application number: CN 200520014154
Authority: CN
Inventors: 陈均钧
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-18
Filing date: 2005-08-18
Publication date: 2006-09-06
Anticipated expiration: 2015-08-18

Abstract

The utility model relates to an electrostatic field analog instrument, which comprises a framework and a U-shaped bracket, wherein probes are respectively fixed at both end parts of the U-shaped bracket and are placed at the same vertical height, the framework comprises a bottom plate and a top plate which are parallel to each other, the bottom plate is connected with the top plate through a supporting column, and a conducting layer is laid at the middle part of the bottom plate; a plurality of electrodes of different shapes are fixed on the conducting layer, two power supply wiring terminals are arranged on the side part of the bottom plate, and the other side part is provided with a plurality of special-purpose wiring terminals; the number of the special-purpose wiring terminals corresponds to that of the electrodes, each of the electrode is connected with each of the special-purpose wiring terminals through a conducting wire, and the circumference on the upper surface of the top plate is provided with four elastic press sheets which can press white paper. The electrostatic field analog instrument can do various electrostatic field analog experiments simultaneously; when the utility model is used, the probes do not need to forcibly press conducting paper and the conducting paper is not easy to damage. Thus, the utility model has the advantages of high experimental efficiency, low use cost, etc.

Description

Analog of Electrostatic Field

Technical field

The utility model relates to a kind of teaching and experiment equipment, relates in particular to a kind of Analog of Electrostatic Field that is used for the static field simulation experiment.

Background technology

In college physical experiment teaching, the experiment that the equipotentiality line drawing is painted in the electrostatic field is absolutely necessary, it can allow the student be familiar with the distribution situation of equipotential line in the equivalent xenogenesis electric charge electric field, its experimentation of two-layer equation instrument that uses mostly generally is so at present, earlier conductive paper there is the one side of conductive materials to make progress, fills up blank sheet of paper (or coordinate paper) above, and fix with compressing tablet, note in whole experiment, not making conductive paper to move, and electrode is linked to each other with the output of power supply.Then probe is connected on the sensitive galvanometer, make probe stationary on the electromotive force reference point, make mark (with probe on conductive paper with defeating, leave a trace on blank sheet of paper by transfer paper), continue on conductive paper, to move gently, continue to seek a plurality of points of identical like this voltage, these points all have identical electromotive force with reference point, remove blank sheet of paper at last,, can obtain equipotential line there being the point of same potential to couple together on the blank sheet of paper with smooth curve.Adopt this kind experimental technique once can only do a kind of static field simulation experiment, and we need do multiple electric field simulation experiment simultaneously usually, then need the experiment instruments not of the same race that are equipped with if do multiple static field simulation experiment more, test as the electric field between point charge and the annular electric charge, the off-centering field experiment, electric field experiment between the equivalent positive charge, electric field experiment between point charge and the point charge, electric field experiment between point charge and the dull and stereotyped electric charge between electric field experiment and dull and stereotyped electric charge and the dull and stereotyped electric charge, so before experiment, need to prepare the difform electrode of this kind, and whenever doing once all needs the repeated experiments step, therefore adopt the experimental technique that the equipotentiality line drawing is painted in the above-mentioned this electric field, the efficient of its experiment is not high; Thereby increased the cost of experiment.

Summary of the invention

Technical problem to be solved in the utility model is to provide a kind of Analog of Electrostatic Field at above-mentioned prior art present situation, this instrument can be done multiple static field simulation experiment simultaneously, need not during use with probe on conductive paper with defeating, conductive paper is not fragile, so it has the conventional efficient height, uses advantages such as this is low.

The utility model solves the problems of the technologies described above the technical scheme that is adopted: a kind of Analog of Electrostatic Field, it includes framework, it is characterized in that it also includes U type support, two ends of this U type support respectively are fixed with a probe, and these two probes are on same vertical height; Described framework includes base plate, reaches the top board parallel with base plate, links together by pillar between base plate and the top board; Be equipped with one deck conductive layer in the middle of the described base plate, on conductive layer, be fixed with the difform electrode of polylith; Sidepiece at base plate is provided with two power-line terminals, and another sidepiece is provided with a plurality of special-purpose binding posts, and the piece number of the number of this special use binding post and electrode is corresponding, and every cube electrode respectively and between a special-purpose binding post links together by lead; All sides on top board are provided with four elastic pressuring plates that can push blank sheet of paper.

Above-mentioned electric board includes a ring electrode, four columnar electrodes and two boards shape electrode, wherein two columnar electrodes are arranged in the ring electrode, two boards shape electrode is arranged in parallel, adopt the electrode of these types can do six kinds of different electric field simulation experiments simultaneously, test as the electric field between point charge and the annular electric charge, the off-centering field experiment, electric field experiment between the equivalent positive charge, electric field experiment between point charge and the point charge, electric field experiment between point charge and the dull and stereotyped electric charge between electric field experiment and dull and stereotyped electric charge and the dull and stereotyped electric charge, the kind of certain above-mentioned electric board and number can autonomous arbitrarily as required combinations.

Above-mentioned conductive layer can be used conductive paper, also can be the stratiform thing that other conductive material is made, as electro-conductive glass.

Compared with prior art, advantage of the present utility model is: because this Analog of Electrostatic Field is being fixed with the difform electrode special of polylith on conductive paper, so it selects two special-purpose binding posts that link to each other with respective electrode in use, one of them special-purpose binding post is linked to each other with the cathode power supply binding post by lead, another special-purpose binding post links to each other with the negative power supply binding post by lead, can do a kind of electric field experiment, doing dissimilar electric field experiments only needs to select different special joints to get final product, reach the effect of one-object-many-purposes, improved the efficient of doing the electric field simulation experiment greatly; Adopt this instrument to do experiment in addition, because two probes on the U type support are positioned on the same vertical height, the position of two probes is synchronous up and down, therefore when the probe that moves on conductive layer finds the point with same potential, its probe that moves on conductive layer need not firmly to press down, what only need firmly press down is that probe that is positioned at above the top board, and on the blank sheet of paper on the top board, stay impression and get final product, take out blank sheet of paper at last, with there being the point of same potential to couple together on the blank sheet of paper, can obtain equipotential line with smooth curve.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is that the A of Fig. 1 is to view.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

A kind of Analog of Electrostatic Field shown in Fig. 1～2, it includes framework 1 and U type support 2, described framework 1 includes base plate 11, and the top board 12 parallel with base plate 11, and base plate 11 and base plate 12 are rectangle, and link together by pillar 13 between base plate 11 and the top board 12; Described U type support 2 is with metal, two ends of U type support 2 respectively are fixed with a probe 21,22, these two probes 21,22 are on same vertical height, and these two probes the 21, the 22nd are by 2 conductings of U type metal support, therefore in use, as the probe 22 that is positioned at U type support 2 upper ends and voltage meter 7 are electrically connected by lead, the probe 21 that then is positioned at U type support 2 lower ends simultaneously is cascaded with probe 22 and voltage meter, and the difference in height between probe 21 and the probe 22 is more bigger than difference in height between top board 12 upper surfaces and base plate 11 upper surfaces; In the middle of described base plate 11, be equipped with one deck conductive layer 3, this conductive layer 3 is conductive paper or electro-conductive glass, the periphery of base plate 11 is not covered by conductive layer 3, on conductive layer 3, be fixed with seven difform electrodes 41,42,43,44,45,46,47, described electrode includes a ring electrode 41, four columnar electrodes 42,43,44,45 and two boards shape electrode 46,47, two columnar electrodes 42 wherein, 43 are arranged in the ring electrode 41, two boards shape electrode 46,47 are arranged in parallel, every cube electrode 41,42,43,44,45,46,47 joint sees through base plate 11 and is positioned at the bottom surface of base plate 11, right part at base plate 11 is provided with two power-line terminals 51,52, the front side of base plate is provided with seven special-purpose binding posts 6, the connecting portion of special-purpose binding post 6 sees through base plate 11 and is positioned at the bottom surface of base plate 11, seven cube electrodes 41,42,43,44,45,46, the connecting portion of 47 connecting portion each and one of them special-purpose binding post 6 links together by lead; All sides on top board 12 are provided with four elastic pressuring plates 9 that can push blank sheet of paper 8, and this elastic pressuring plate 9 is fixed on above the base plate by screw 10.

The course of work of the present utility model is such:

On base plate, lay a blank sheet of paper 8 earlier, blank sheet of paper 8 usefulness elastic pressuring plates 9 are fixing, both positive and negative polarity with power supply is electrically connected by lead and positive and negative power-line terminal 51,52 then, this power supply adopts direct supply, probe 22 with U type support upper end links to each other by the positive pole of lead with voltage meter 7 again, this moment U type support lower end the probe 22 of probe 21 and upper end and the voltage meter conducting of connecting, make things convenient for us to do experiment like this, the negative pole of voltage meter 7 then links to each other with negative power supply binding post 52 by lead; Next select two special-purpose binding posts 6 more as required, one of them links to each other with cathode power supply binding post 51 by lead, another then links to each other with negative power supply binding post 52 by lead, follow energized, the probe 21 of mobile U type support 2 lower ends, probe 21 contacts with conductive layer 3, and voltage meter 7 is observed in attention simultaneously, and remember voltage readings on the voltage meter 7, push the probe 22 of U type support 2 upper ends, probe 22 stays next impression on blank sheet of paper 8, because probe 21,22 on same vertical height, so the position of upper end probe 22 and the position of probe 21 are all the time on same vertical height position, so this position is a reference point, continue the probe 21 of mobile U type support 2 lower ends again, when moving to voltage readings on the voltage meter 7 with reading was identical just now position, push the probe 22 of U type support 2 upper ends again, probe 22 stays next impression again on blank sheet of paper, so repeatedly circulation, note the identical point of a plurality of voltages,, promptly obtain an equipotential line there being the point of same potential to couple together on the blank sheet of paper 8 with smooth curve, obtain many equipotential lines as needs and then look for other reference point to get final product in addition, its process is the same with said process.

As doing electric field experiment between point charge and the point charge, two special-purpose binding posts 6 then selecting to link to each other with columnar electrode 44,45 link to each other with positive and negative power-line terminal 51,52; As doing the electric field experiment between point charge and the annular electric charge, then select the special-purpose binding post 6 that links to each other with ring electrode 41, and the special-purpose binding post 6 that links to each other with columnar electrode 42 or 43 in the ring electrode 41, these two special-purpose binding posts 6 link to each other with positive and negative power-line terminal 51,52; As doing the electric field experiment between the positive point charge of equivalent, the special-purpose binding post of then selecting to link to each other with ring electrode 41 6 that special-purpose binding post 6 links to each other with negative supply binding post 52 and ring electrode 41 interior columnar electrodes 42 link to each other with 43 links to each other with positive supply binding post 51; As doing the electric field experiment between dull and stereotyped electric charge and the dull and stereotyped electric charge, two special-purpose binding posts 6 then selecting to link to each other with plate electrode 46,47 link to each other with positive and negative power-line terminal 51,52.

Claims

1, a kind of Analog of Electrostatic Field, it includes framework (1), it is characterized in that it also includes U type support (2), and two ends of this U type support (2) respectively are fixed with a probe (21,22), and these two probes (21,22) are on same vertical height; Described framework (1.) includes base plate (11), reaches the top board (12) parallel with base plate, links together by pillar (13) between base plate (11) and the top board (12); Be equipped with one deck conductive layer (3) in the middle of the described base plate (11), on conductive layer (3), be fixed with the difform electrode of polylith; Sidepiece at base plate (11) is provided with two power-line terminals (51,52), another sidepiece is provided with a plurality of special-purpose binding posts (6), the number of this special use binding post (6) is corresponding with the piece number of electrode, and every cube electrode respectively and between the special-purpose binding post (6) links together by lead; All sides on top board (12) are provided with four elastic pressuring plates (9) that can push blank sheet of paper (8).

2, Analog of Electrostatic Field according to claim 1, it is characterized in that described electrode includes a ring electrode (41), four columnar electrodes (42,43,44,45) and two boards shape electrode (47,48), wherein two columnar electrodes (42,43) are arranged in the ring electrode (41), and two boards shape electrode (47,48) is arranged in parallel.

3, Analog of Electrostatic Field according to claim 1 is characterized in that described conductive layer (3) is conductive paper or electro-conductive glass.