CN2684301Y - AC principle explaining device - Google Patents
AC principle explaining device Download PDFInfo
- Publication number
- CN2684301Y CN2684301Y CN 200320128472 CN200320128472U CN2684301Y CN 2684301 Y CN2684301 Y CN 2684301Y CN 200320128472 CN200320128472 CN 200320128472 CN 200320128472 U CN200320128472 U CN 200320128472U CN 2684301 Y CN2684301 Y CN 2684301Y
- Authority
- CN
- China
- Prior art keywords
- base
- axle
- commutator
- pedestal
- light emitting
- 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
Links
Landscapes
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Instructional Devices (AREA)
Abstract
The utility model provides an A C principle explaining device, which comprises a pedestal 1, two assumed magnetic poles N, S 4 which are arranged on the pedestal, a bracket, a shaft 6 arranged on the bracket, a cranker 5 arranged on the bracket, and an assumed rectangular coil 10. The utility model is characterized in that direct current power is arranged in the pedestal, a light bulb 2 is arranged at the front side of the pedestal, a cam 7 and a couple of commutators are arranged on the shaft, and both sides of each commutator are provided with two electric brushes 9. The commutators are contacted with the electric brushes, and are connected with two end points of the rectangular coil. The front side of the rectangular coil is embedded with two light emitting diodes 11, and is provided with an arrowhead which can indicate a current direction. A circuit comprises the light bulb, the direct current power A, a slide rheostat 18 and a leading wire, a tappet spring is arranged at the lower side of the cam, and a tappet is connected with a contact head of the slide rheostat. The direct current power B, the leading wire, the electric brushes, the commutators and the luminous diodes can form a circuit. One side of the pedestal and the assumed magnetic poles is also provided with an image plate and a sinusoid which can display the current or voltage of the alternating current. The utility model which can be used for the intuitional instruction is convenient for teachers to explain and is easy for students to understand.
Description
One, technical field
The utility model belongs to the instruments used for education class, relates to the instructional device of explanation alternating current in the physics of middle school.
Two, background technology
At present, when middle school explanation physics alternating current partial content, adopt model class more, promptly curve a square coil and be placed in the magnetic field of supposition, gesticulate with hand while explaining with tinsel.Use this type teaching, the size variation of the generation of electric current, electric current and the change of sense of current when in magnetic field, rotating for coil, the student is difficult to see, is difficult for understanding.
Three, summary of the invention
The utility model purpose is exactly to improve at the deficiency of above-mentioned model and perfect, provide can produce alternating current, alternating current principle explanation device that size and direction and the periodically variable sinusoidal image synchronization of intercropping at any time show.
The technical solution of the utility model is achieved in that and exchanges principle explanation device, comprise a base 1, the magnetic pole NS4 of two fixing supposition on the base, support behind the base, the axle of adorning on the support 6 is gone up the hand-crank of adorning 5 with axle, and between magnetic pole and the supposition brachmorphy coil 10 that links to each other with axle, it is characterized in that: also be provided with direct supply in the base, the front end of base has a bulb 2; There is a cam 7 centre of axle, and the front end of axle has a pair of commutator 8, and there are two brushes 9 on the commutator both sides; Commutator contacts with brush, and joins with two end points supposing square coil; The front of square coil is embedded with two light emitting diodes 11, and is covered with the arrow sheet of indicator current direction.Described bulb and direct supply A, slide rheostat 18 and lead 20 are formed series circuit, and tappet 16 and spring 17 are housed under cam, tappet connects the contact of slide rheostat, direct supply B, lead, brush and commutator and be inlaid in square coil before light emitting diode composition circuit.The resistance of rotating crank slide rheostat changes, and promptly rotates square coil, and the brightness of bulb increases gradually.Electric current maximum when expression square coil rotation 90 is spent, bulb is the brightest.Square coil is rotated further again, and bulb brightness reduces gradually.Represent that no current produces when square coil rotates 180 when spending, rotate square coil again and represent and produce electric current that bulb begins luminous again.At this moment the arrow of indicator current direction but changes direction, and opposite with original direction.
Above-described alternating current principle explanation device also has an image plate, image plate and the slotting mutually connection of base in magnetic pole one side of base and supposition.Image plate is made up of several light-emitting diodes on plate and the plate.The solid colour of color and image plate face when diode is not luminous, diode displaying goes out sinusoidal curve under the alternating current.
The utility model provides a kind of alternating current principle explanation device, and it is compared with background technology, has when the content of courses of explanation middle school physics alternating current, reaches the purpose of object teaching, is convenient to teacher's explanation, is easy to characteristics such as student's understanding.
Four, description of drawings
Fig. 1 is the profile and the structural representation of alternating current principle explanation device;
Fig. 2 is that the cam drive part of alternating current principle explanation device is formed structural representation with circuit.
Five, embodiment
Below in conjunction with description of drawings embodiment of the present utility model.
Shown in Figure 1, alternating current principle explanation device has the three groups of direct supplys of A, B, C in base 1, the base, the support 3 of base rear end, the magnetic pole NS utmost point 4 of two supposition on the bulb 2 on the front end of base (A group power supply is luminous for the bulb) base, the square coil of supposing between magnetic pole 10 etc.Dress axle 6 on support, spindle nose is adorned a hand-crank 5 with rotation, there is a cam 7 centre of axle, the front end of axle is that a pair of commutator 8, commutator both sides are two brushes 9 that are fixed on the base, commutator contacts with brush, and join with two end points of square coil 10, be embedded with two light emitting diodes 11 in the front of square coil, light emitting diode is stained with the arrow sheet that indicates direction of current outward, one is red arrow, one is blue look arrow, and this two arrow represents that square coil produces the direction that exchanges.Side at base and supposition magnetic pole also is plugged with an image plate 12, (connection-peg is attaching plug and socket), image plate is made up of the light emitting diode on plate and the plate, and image plate is printed with a coordinate, transverse axis is time (t) axle, and the longitudinal axis is electric current (i) and voltage V axle 13.Several light emitting diodes on the image plate are inlaid in the plate and become sinusoidal.
Shown in Figure 2, the cam drive part of alternating current principle explanation device is formed with circuit.Base front end bulb 2, direct supply A, annular slide rheostat 18 and lead 20 are formed series circuit, tappet 16 and spring 17 connect cam and annular slide rheostat contact 21, when crank 5 rotation axiss 6 and the cam that drives on it also rotate together, tappet drives annular slide rheostat contact and rotates because the effect of spring moves up and down.Resistance changes in the circuit, and the brightness of bulb is rotated with crank, and promptly square coil changes at the supposition position of magnetic pole.Direct supply B is through lead, brush 9 and commutator 8 light emitting diode 11 for setting-in on the square coil, and commutator changes two light emitting diode energisings and cuts out, and promptly changes the direction of the arrow of representing on the square coil.Thereby demonstrate out the electric current variation in the square coil and indicate its interior direction of current.Direct supply C gives the power supply of image plate light emitting diode, the contact 23 on rotor wheel 24, the fixed touch plate 26 on the fast pulley 25 and light emitting diode composing images plate circuit.Rotor wheel is linked to each other with axle 6 by belt 22.Rotating crank, beam warp belt drives rotor wheel, the contact on the rotor wheel contacts with fixed touch plate one by one, and turn-on current makes the lumination of light emitting diode that constitutes the sinusoidal curve figure on image plate by the light emitting diode of lead 27 to image plate.
Claims (2)
1. an alternating current principle illustrates device, comprise a base (1), the magnetic pole NS (4) of two fixing supposition on the base, the support behind the base, the hand-crank (5) that the axle of adorning on the support (6) and axle are gone up dress, and between magnetic pole and the supposition square coil (10) that links to each other with axle; It is characterized in that: also be provided with direct supply in the base, the front end of base has a bulb (2); There is a cam (7) centre of axle, and the front end of axle has a pair of commutator (8), and there are two brushes (9) on the commutator both sides, and commutator contacts with brush, and joins with two end points supposing square coil; The front of square coil is embedded with two light emitting diodes (11), and is covered with the arrow sheet of indicator current direction; Described bulb and direct supply A, slide rheostat (18) and lead (20) are formed series circuit, and tappet (16) and spring (17) are housed under cam, and tappet connects the contact of slide rheostat; Direct supply B, lead, brush and commutator and light emitting diode are formed circuit.
2, a kind of alternating current principle explanation device according to claim 1, it is characterized in that: magnetic pole one side in base and supposition also has an image plate (2), image plate is inserted mutually with base and is connected, and image plate is made up of several light emitting diodes on plate face and the plate face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320128472 CN2684301Y (en) | 2003-12-02 | 2003-12-02 | AC principle explaining device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320128472 CN2684301Y (en) | 2003-12-02 | 2003-12-02 | AC principle explaining device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2684301Y true CN2684301Y (en) | 2005-03-09 |
Family
ID=34600025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320128472 Expired - Fee Related CN2684301Y (en) | 2003-12-02 | 2003-12-02 | AC principle explaining device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2684301Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859502A (en) * | 2010-05-17 | 2010-10-13 | 江成奎 | Motor principle demonstrator |
| CN105303937A (en) * | 2014-07-08 | 2016-02-03 | 刘绍家 | Demonstration teaching device for comprehensive double-current generator principle interpretation |
-
2003
- 2003-12-02 CN CN 200320128472 patent/CN2684301Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101859502A (en) * | 2010-05-17 | 2010-10-13 | 江成奎 | Motor principle demonstrator |
| CN105303937A (en) * | 2014-07-08 | 2016-02-03 | 刘绍家 | Demonstration teaching device for comprehensive double-current generator principle interpretation |
| CN105303937B (en) * | 2014-07-08 | 2019-02-12 | 刘绍家 | A kind of double current generator principle explains teaching apparatus comprehensively |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203588614U (en) | Rotary LED display device based on Bluetooth control | |
| CN101859502A (en) | Motor principle demonstrator | |
| CN205356599U (en) | Glassless three -dimensional (3D) display device | |
| CN2684301Y (en) | AC principle explaining device | |
| CN106023769A (en) | Motor and engine integrated teaching demonstration model | |
| CN2472291Y (en) | A.C. power generator model | |
| JP2006301551A (en) | Dc motor rotation principle explaning device | |
| CN201725470U (en) | Electric engine principle demonstrator | |
| CN210804924U (en) | Teaching aid assembly for teaching of direct current principle | |
| CN110459144B (en) | Outdoor advertising equipment | |
| US20220034494A1 (en) | Dynamic lighting device | |
| CN208240311U (en) | A kind of rotary display advertising lamp box | |
| JP3153226U (en) | Turbine type DC generator with light emitting diode | |
| CN2260359Y (en) | Imitating demonstration instrument for alternating current | |
| CN2343639Y (en) | Current simulation demonstrator | |
| TW201001361A (en) | Light dazzling pattern display device using wind power and method thereof | |
| CN202816289U (en) | Small size wind energy source outdoors advertising board | |
| CN217008468U (en) | Electromagnetic induction demonstration device | |
| CN2932532Y (en) | Demonstrative model | |
| CN210091492U (en) | Photoelectric interesting demonstration device for three-dimensional space of geometric solid | |
| CN203001968U (en) | Remote controlled toy helicopter with graphic display function | |
| CN204130122U (en) | A kind of stepless time adjustment LED rotating lamp box | |
| CN204213795U (en) | There is the light-emitting device of stereopsis display | |
| CN2507093Y (en) | Portable magnetic connected photoelectric demonstrator for student | |
| CN216817772U (en) | Split clamping seat multipurpose night lamp |
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 |