CN2304962Y - Demonstrator for magnet field intensity in electric solenoid - Google Patents
Demonstrator for magnet field intensity in electric solenoid Download PDFInfo
- Publication number
- CN2304962Y CN2304962Y CN 97224618 CN97224618U CN2304962Y CN 2304962 Y CN2304962 Y CN 2304962Y CN 97224618 CN97224618 CN 97224618 CN 97224618 U CN97224618 U CN 97224618U CN 2304962 Y CN2304962 Y CN 2304962Y
- Authority
- CN
- China
- Prior art keywords
- solenoids
- field intensity
- amperemeter
- small magnetic
- power panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a physical experiment demonstrating instrument which is composed of two solenoids 10, 11, an amperemeter 7, two small magnetic needles 8, 9, two switches 5, 6 and a power panel 14, wherein, the solenoids 10, 11 have different turn numbers, the small magnetic needles 8, 9 are respectively positioned below the solenoids, the positive pole of the amperemeter 7 is connected with the switches 5, 6, the negative pole of the amperemeter 7 is connected with the solenoids 10, 11, and the two solenoids, the amperemeter, the switches and the power panel form a closed circuit. When current passes through the whole circuit, the size of magnetic field intensity can be analyzed and researched through the sizes of the deflecting angles of the small magnetic needles. The utility model can vividly demonstrate the size of the magnetic field intensity of the electric solenoids, and simultaneously can be cooperated with a projector to project and magnify demonstration. The utility model has the advantages of clear and visual demonstration, high visibility, convenient operation and good demonstrating effect, can be used as a grouping experiment instrument for students, and is applied to physical teaching.
Description
The utility model relates to the physics demonstration experiment instrument, particularly a kind of energization solenoid magnetic field intensity demonstration device.
The lecture experiment of energization solenoid magnetic field intensity is one of content of outbalance in the physics teaching.This experimental provision in the past comprise in the existing newly organized middle school teaching material all be with various device occasional combinations on lectern or student's experiment table, adopt big electric current by attracting the method for pin, analyze and the power in research magnetic field.This kind demenstration method visibility is little, is difficult for observation, and the demonstration effect is undesirable, and improper use might be burnt coil.
The purpose of this utility model provides a kind of instrumentation of demonstrating the experiment of energization solenoid magnetic field intensity, it can cooperate projector to use, the phenomenon that can only observe in surface level of making over becomes amplification observation on the vertical plane, and experiment effect is good, and easy to use.
The concrete technical scheme that realizes the utility model purpose is: instrument is made of two solenoids, reometer, two small magnetic needles, two switches and a power panel, the number of turn difference on two solenoids, and two small magnetic needles lay respectively at the solenoid below; One slack adjuster is arranged on the power panel; With a switch in parallel one resistance is arranged; The transparent film of tinting is posted in the top of two small magnetic needles; Two solenoids, reometer, two switches and power panel are composed in series a closed circuit.
The utility model can be demonstrated the power in energization solenoid magnetic field visually, can cooperate the projector projection to amplify demonstration simultaneously, and phenomenon is clear, visibility is big, and is easy and simple to handle, and good demonstration effect can be applicable to physics teaching as the instrument of student experimenting.
Describe in detail below in conjunction with accompanying drawing:
Accompanying drawing is a structural representation of the present utility model
Cut-off switch 5,6 before the demonstration, slack adjuster 13 on the loosening power panel 14, extract power panel 14 out, on power panel 14, connect the power supply of 8～12V, insert the fastening slack adjuster 13 in power panel 14 backs, this moment, the pointer of reometer 7 was zero, small magnetic needle 8,9 refer to geographical North and South directions and with solenoid 10,11 axis normal.When switch 5 closures, when switch 6 disconnects, the needle deflection of reometer 7, small magnetic needle 8,9 deflect and the angle of solenoid 10 below small magnetic needles 9 deflections that the number of turn is much bigger, this shows under the situation that energization solenoid is identical in profile, strength of current is identical that the magnetic field intensity that the solenoid that the number of turn is many produces is big.
When switch 5, when switch 6 is closed simultaneously, resistance 12 is by short circuit, the needle deflection angle of reometer 7 increases, the electric current of entire circuit increases, small magnetic needle the 8, the 9th, deflection angle also increases respectively, this shows energization solenoid 10,11 under the constant condition of the number of turn, and strength of current increases, and magnetic field intensity also increases.
When switch 5 closures, switch 6 disconnect, slack adjuster 13 on the loosening power panel 14, extract power panel 14 out, upset power panel 14 inserts the fastening slack adjuster 13 in back, at this moment the both positive and negative polarity of power panel 14 is to that indicated in the drawings opposite, the reverse deflection of pointer meeting in the reometer 7 at this moment, and the yawing moment of small magnetic needle also changes, this shows that change had also taken place the magnetic direction that energization solenoid produces when direction of current in the electric current changed.
Insert iron core 15 when switch 5 closures, switch 6 disconnect from the hole 1, at this moment the deflection angle of small magnetic needle 8 increases considerably, and this shows that when the number of turn and strength of current are constant insert iron core, the magnetic field intensity of energization solenoid strengthens greatly.
Main element of the present utility model is installed in the box that is processed by the thick transparent organic glass of 3mm, has hole 1,2,3,4 around the box, can insert iron core, power panel and gauge tap easily.The utility model also can use on projector, and it is better to project on the shadow curtain effect.
Claims (5)
1. an energization solenoid magnetic field intensity demonstration device is primarily characterized in that reometer (7), two small magnetic needles (8), (9), two switches 5,6 and the power panel 14 by two solenoids (10), (11), transparent scale dish constitutes;
2. demonstration device according to claim 1 is characterized in that the number of turn difference on solenoid (10), (11), and two small magnetic needles (9), (8) lay respectively at solenoid (10), (11) below;
3. demonstration device according to claim 1 is characterized in that the transparent film of tinting is posted in the top of two small magnetic needles (8), (9);
4. demonstration device according to claim 1 is characterized in that a slack adjuster (13) is arranged on the power panel (14);
5. demonstration device according to claim 1 is characterized in that being parallel with a resistance (12) with switch (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224618 CN2304962Y (en) | 1997-08-19 | 1997-08-19 | Demonstrator for magnet field intensity in electric solenoid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97224618 CN2304962Y (en) | 1997-08-19 | 1997-08-19 | Demonstrator for magnet field intensity in electric solenoid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2304962Y true CN2304962Y (en) | 1999-01-20 |
Family
ID=33938904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97224618 Expired - Fee Related CN2304962Y (en) | 1997-08-19 | 1997-08-19 | Demonstrator for magnet field intensity in electric solenoid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2304962Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107533A (en) * | 2013-04-18 | 2014-10-22 | 温州大学瓯江学院 | Multifunctional badminton racket and shuttlecock set |
| CN106157764A (en) * | 2015-05-15 | 2016-11-23 | 刘绍家 | A kind of instruments used for education of visible light demonstrating electrical magnetic phenomenon |
| CN106652688A (en) * | 2016-11-25 | 2017-05-10 | 湖州师范学院 | Single-coil current magnetic induction intensity experiment apparatus |
-
1997
- 1997-08-19 CN CN 97224618 patent/CN2304962Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104107533A (en) * | 2013-04-18 | 2014-10-22 | 温州大学瓯江学院 | Multifunctional badminton racket and shuttlecock set |
| CN106157764A (en) * | 2015-05-15 | 2016-11-23 | 刘绍家 | A kind of instruments used for education of visible light demonstrating electrical magnetic phenomenon |
| CN106652688A (en) * | 2016-11-25 | 2017-05-10 | 湖州师范学院 | Single-coil current magnetic induction intensity experiment apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |