KR20040005718A - Study facilities learing for DC, AC, electromagnetic induction - Google Patents

Abstract

PURPOSE: An apparatus for learning DC, AC, and electric induction is provided to obtain easily fundamental scientific knowledge such as the DC, the AC, and the induced electricity by using magnets. CONSTITUTION: An apparatus for learning DC, AC, and electric induction includes a DC core(1), the first and the second AC cores(2,3), the first magnet(4), the second magnet(5), a voltmeter(12), an electronic assembly kit(8), and a small lamp(9). A DC phenomenon due to attraction and repulsion between the DC core(1) and the first magnet(4) and between the first AC core(2) and the second magnet(5) and the vibration of the first and the second magnet(4,5) due to the frequency of the AC power induced from the AC core(2), and the second magnet(5) are indicated as the predetermined sound. The voltmeter(12) is used for indicating the electric intensity due to the induced current.

Description

Study facilities learing for DC, AC, electromagnetic induction}

The present invention has a difficulty in understanding the direct current, alternating current, and mutual induction as data on direct current, alternating current, and electric induction as shown in FIGS. 6 and 7.

An object of the present invention for solving the above problems is to easily understand the electrical phenomena caused by direct current and alternating current, and Faraday's induced electrons through the attraction and repulsive force by using a magnet, the direct current is the size according to time It can be seen that the voltage and current are kept constant by the anode of the magnet, and the alternating current is constant as the current or voltage changes periodically in both positive and negative directions over time. It can be seen that the magnet installed around the coil vibrates as much as the vibration of the plastic tube (60Hz).

In addition, in FIG. 3, when a current flows through a coil wound around an iron core core, a magnetic field is generated. Electricity of the induced electrons is induced to a nearby core near by passing through an obstacle such as water or plastic to supply power to the core ③ and In order to understand the flow, the voltmeter and the light bulbs are characterized by allowing the user to feel directly visually that the electric current can flow through the flow.

1 is a structural diagram of assembling the learning device (material) of the DC, AC electromagnetic induction phenomenon

FIG. 2 is an assembly schematic sketch of FIG. 1. FIG.

3 is a structural diagram of a learning apparatus for electric induction and vibration phenomenon of the alternating current of FIG.

4 is a structural diagram of a learning apparatus for the direct current phenomenon in FIG.

FIG. 5 is a layout view of an electronic assembly kit for sound in FIG. 1

6 is a basic waveform of AC and DC power supply for FIGS. 3 and 4;

7 is a basic structure and principle diagram of the electric induction phenomenon of FIG.

Advantages of the configuration and operation as the learning equipment of the present invention can be clarified by the following description with reference to the accompanying drawings.

In the present invention in Figures 1 and 2, the two core cores ① and ② placed side by side are placed in a plastic tube, respectively, and a rod magnet is hung on the other tube in front of it, and the power of DC and AC is supplied to each ① and ② coils. And observe the movement and sound of each magnet. Also, ② put water in the coil and make small iron core ③ next to it and supply a certain amount (12v) of AC power to the coil. It was supplied with the light of ⑨, the voltmeter ⑫ and the electronic assembly training kit ⑦, and the learning equipment was made so that the electric phenomenon could be easily understood through seeing, hearing, and feeling. As shown in ④ ⑤ of Fig. 2, the magnets are suspended in the acrylic tubes in front of the cores ① and ② and supplied with direct current and alternating current, respectively. In the case of the movement of 과 and ⑤, the magnet was able to observe the sound vibrating as much as the frequency, and ② placed a small core (300 coils in the iron core) ③ next to the core (coils in the iron core: 1000 times) ③. When 10v AC power is supplied to this core, mutual induction electricity is generated by the influence of the magnetic field in the core ③, so it is possible to know the induced electric phenomenon and the vibration of the magnet by connecting the light of the bulb connected to the output of both ends of the coil ② and the voltmeter. Can be.

5 is provided to supply the power output through the induced current to the electronic assembly kit (such as sound bird) or completed through the bulb and voltmeter to enhance the audio-visual effect.

Electricity in terms of utilization is the energy source that we use the most, and it is widely used as a learning device of basic science that can easily understand the properties of alternating current, direct current and mutual induction electricity.

The prospects will be brighter for the understanding and application of basic science to new technologies with the help of learning devices that can easily understand alternating current, direct current, and induction electricity in the secondary school curriculum. As for the effect on the surrounding electricity, the first direct current can easily know the flow of constant magnitude and direction with time as shown in Fig. 6, and the alternating current has a periodic (frequency, (60Hz) and it is flowing, so it is easily distinguished from DC.

When electric current flows through the coil wound around the core, the induced electricity generated by the magnetic field can be visually recognized as being able to perform electrical work by overcoming obstacles of water or plastic pipes to other coils next to each other. It can be seen from the present invention that the amount of electricity induced in proportion to the amount of winding of the coil increases.

Claims (4)

In the assembly structure of the learning device (material) of direct current, alternating current, and electric induction phenomenon [Fig. 1], Direct current and alternating current that can be expressed by visual, auditory, and voltmeter through the relationship between magnets and small light bulbs, while the electric power supplies power to the core of the coil wound with direct current and alternating current. The structure of the learning device of the phenomenon. In claim 1, the hearing and attraction of DC core ① and magnet ④ and AC core ② and magnet ⑤ (direct current phenomenon) and AC power induced from AC core ② and magnet ⑤ are magnets with frequency [60Hz]. Structure of learning device (material) to be able to express vibration [60Hz] of sound with material such as plastic The power supplied from the cores 2 and 3 for alternating current to the core ③ is induced by the electric and electronic mutual induction effect from the core ③ to the core ②, and the electric force is applied to the core ⑤ at a frequency (60 Hz). The structure of the learning device to make it vibrate and the voltage at this time can be expressed through the instrumentation. In order to obtain a clear audiovisual effect with the power source induced in core ②, power supply is supplied to the electronic assembly kit ⑦ in which the little bulb light ⑨ and the bird sound melody ring. (Device).