CN2472291Y

CN2472291Y - A.C. power generator model

Info

Publication number: CN2472291Y
Application number: CN 01217554
Authority: CN
Inventors: 张永晓; 张亚军
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-02-26
Filing date: 2001-02-26
Publication date: 2002-01-16
Anticipated expiration: 2011-02-26

Abstract

The utility model relates to an alternator model, which belongs to a teaching instrument, aiming at overcoming the disadvantages of the manual generator and other instruments. The utility model comprises a magnet, a rectangular coil, an electric brush, an output connector, a motor and an LED. The structure is in accordance with the teaching instrument as required in teaching context. Two poles of the magnet are close to each other, and the magnetic field between the two poles is almost uniform magnetic field. Thus, the rectangular coil driven by the motor can rotate uniformly to generate sinusoidal alternating current. When the output connector is connected with the LED, the LED is on, indicating that the utility model can generate electricity, and when the output connector is connected with the electricity meter, the pointer of the electricity meter swings obviously, indicating that the electricity is alternating current. Besides, when the output connector is connected with an oscilloscope, the display is sinusoidal wave, indicating that the electricity is sinusoidal alternating current.

Description

The alternative electric generation machine model

This model belongs to instruments used for education.

Sinusoidal ac (abbreviation alternating current) be domestic all kinds of school (various secondary schools, university) must learn content.Present all kinds of school is when this part content of teaching, and hand generator commonly used or Principle of Electric Engine explanation device are done lecture experiment.Because hand generator and Principle of Electric Engine explanation device all can not form uniform magnetic field, so the alternating current that they produce is not a sinusoidal ac, do the generation that experiment can not accurately illustrate sinusoidal ac with them, more can not observe the sinusoidal waveform of alternating current with them.The middle school textbook has to use the alternating current in the lighting circuit in order to observe the image of alternating current.

Purpose of the present invention just is to overcome the shortcoming of above-mentioned instrument, and the model that can produce sinusoidal ac is provided.What it not only can equally with hand generator or Principle of Electric Engine illustrate generation electricity and generation is alternating current, and can observe the sinusoidal waveform image of alternating current with it.

This model is to realize above-mentioned purpose like this: this model is formed desired teaching aid basically identical in its basic structure and the teaching material by magnet, square coil, slip ring, brush, output wiring terminal and motor etc.Two opposite poles of magnet lean on quite closely, and uniform magnetic field is approached in the magnetic field between magnetic pole.Be placed on square coil in the uniform magnetic field and under the drive of motor, produce sinusoidal ac during uniform rotation, and externally export by slip ring, brush and output wiring terminal.Connect light emitting diode on the output wiring terminal, light emitting diode is glittering, shows that this model can produce; When connecting large-scale galvanometer, square coil is under finger rotates, and the galvanometer pointer just significantly swings, and the electric current that shows generation is an alternating current; When connecting oscillograph, just can observe directly the sinusoidal waveform of alternating current, show that alternating current is a sinusoidal ac.

Fig. 1 is the installation drawing of a kind of concrete structure of this model.

Fig. 2 is the planimetric map of substitutions of elements horsehoe magnet and pole shoe thereof in Fig. 1 model.

Fig. 3 is the planimetric map of the block magnet of substitutions of elements and pole shoe thereof in Fig. 1 model.

With reference to Fig. 1,, fore-stock [3], after-poppet [4], left and right sides output wiring terminal [5,6], motor [7], two power-line terminals [8,9] and light emitting diode binding post [10] are housed on its base [2] by this model that plate shape magnet [1] and base [2] are formed.The two ends that square coil [11], two be shaped as the rotating shaft [15] of slip ring [12,13] that the annulus semicircular ring connects together and power wheel [14] are housed to be through in the axis hole of front and back support [3,4].Two the end of a thread [16,17] of square coil [11] link to each other with two slip rings insulated from each other [12,13] respectively.The upper end of two brushes [18,19] is partly touched with the annulus of two slip rings [12,13] respectively, and the lower end links to each other with left and right sides output wiring terminal [5,6] respectively.The fixing two boards shape magnet [1] of quilt door shape frame [20] is placed on and covers square coil [11] on the base [2].The runner [21] of motor [7] links to each other with power wheel [14] by belt [22].Two incoming lines of motor [7] link to each other with two power-line terminals [8,9] respectively.Connect a light emitting diode [23] between left output wiring terminal [5] and light emitting diode binding post [10], the light head of light emitting diode is inserted in the fenestra of fore-stock [3].

With reference to Fig. 2, Fig. 3, can be replaced with horsehoe magnet [24] and pole shoe [25] thereof or block magnet [26] and pole shoe [27] thereof by the fixing two boards shape magnet [1] of door shape frame [20] in this model.

Have the rectangle slot on this model base, left and right sides output wiring terminal is moved in slot together with two brushes.Like this, two brushes not only can partly touch respectively at the annulus of two slip rings, and can be respectively partly touch with the semi-ring of two slip rings, so this model can also be made the DC generation machine model.When making the DC generation machine model,, two brushes are partly touched respectively with the semi-ring of two slip rings as long as left and right sides output wiring terminal and two brushes are moved together.This moment, left and right sides output wiring terminal connected galvanometer, and when square coil rotated a week, the galvanometer pointer was only to a direction deflection; When connecting oscillograph, what present on the screen is the pulsating direct current waveform.In addition, if connect direct current on the output wiring terminal of the left and right sides, then square coil can rotate continuously, and this model just becomes the direct current drive machine model.

This model can be made large-scale or small-sized plurality of specifications, is respectively applied for lecture experiment and student and divides into groups to observe.Magnet in this model can be fixed on the base, also can not be fixed on the base.Magnet is fixing, is more convenient for observing this structure of models, helps deepening the understanding of the generation of student's offset of sinusoidal alternating current.

Claims

1. the simple alternating current generator model of forming by plate shape magnet [1] and base [2], fore-stock [3] is housed on its base, after-poppet [4], left and right sides output wiring terminal [5,6], square coil [11] is housed, two slip rings [12,13] and the two ends of the rotating shaft [15] of rotor wheel [14] be through front and back support [3,4] in the axis hole, two the end of a thread [16 of square coil [11], 17] respectively with two slip rings [12,13] link to each other, two brushes [18,19] upper end respectively with two slip rings [12,13] touch, the lower end respectively with left and right sides output wiring terminal [5,6] link to each other, the fixing two boards shape magnet [1] of quilt door shape frame [20] is placed on and covers square coil [11] on the base [2], this model is characterised in that the opposite pole of two boards shape magnet [1] leans on quite closely, forms one and approach even strong magnetic field between magnetic pole.

2. according to the motor model of claim 1, it is characterized in that also being equipped with on the base motor [7] and power-line terminal [8,9], the runner [21] of motor [7] links to each other with power wheel [14] in the rotating shaft [15] by belt [22], and two incoming lines of motor [7] link to each other with two power-line terminals [8,9] respectively; In this model, the quick uniform rotation of square coil is to carry out under the drive of motor.

3. according to the motor model of claim 1 and 2, it is characterized in that connecting a light emitting diode [23] between an output wiring terminal [5] and the light emitting diode binding post [10], the light head of light emitting diode can be inserted in the fenestra of fore-stock [3].

4. according to the motor model of claim 1, it is characterized in that two slip rings are that an end is an annulus, the other end is the shape of semi-ring, have the rectangle slot on the base, left and right sides output wiring terminal [5,6] can move together with two brushes [18,19], two brushes [18,19] both can be respectively partly touched with the annulus of two slip rings [12,13], again can be respectively partly touch with the semi-ring of two slip rings [12,13].

5. according to the motor model of claim 1, it is characterized in that being replaced by the fixing available horsehoe magnet of two boards shape magnet [1] [24] of door shape frame [20] and pole shoe [25] thereof or block magnet [26] and pole shoe [27] thereof.