Three-color display electricity demonstrator

Abstract

The invention relates to a three-color display electricity demonstrator and belongs to the field of teaching instrument demonstration. The three-color display electricity demonstrator comprises a test hole, a test source, an operational amplifier section, an operational amplifier integrated switch, a stepped comparison and amplifier section and a display system. The test hole is connected to the object to be measured; under the operation of the operational amplifier integrated switch, the test source are formed into two test sources of frequency and non-frequency; after amplification of the operational amplifier section, the stepped comparison and amplification section can be reliably started, and the display system is displayed by the display system. The three-color display electricity demonstrator is characterized in that the integrated operational amplifier is used as a basic active component, and the logic relation of various functions can be formed; a strong understanding of the close connection between the structure of the resistance components can be emphasized so as to understand the significance of capacitance and reactance and to lay a certain electrical basis for beginners. In the display system, three types of instructions are included in the display system, namely three-color marking instruction, a double color common cathode light emitting tube and a speech sensor positioned in a display basic unit. The three-color display electricity demonstrator has the advantages of dynamic strong sense, bright colors and strong interest, and being capable of cultivating the majority of young people's love of science.

Description

technical field [0001] The utility model belongs to the field of teaching instrument demonstration. Background technique [0002] Innovation is the soul of a nation, and young students are the power of innovation. [0003] The strength of a country lies in its talents, and the cultivation of talents lies in education. The focus of education on young people is that the country is strong when young people are strong, and the country progresses when young people progress. To cultivate young people's love for science, improving the quality of teaching is the key, and the accuracy of experimental instruments is an important factor in improving teaching. The experiments are more convincing, so that students can understand things, understand natural phenomena, inspire students' thinking, and play an important role in improving the level of education. Therefore, various experimental instruments in teaching are constantly improving, but there are still many deficiencies: First, the...

AI Technical Summary

Problems solved by technology

Therefore, the various experimental instruments in teaching are constantly improving, but there are still many shortcomings: First, the types of experimental instruments are insufficient, especially the experimental instruments for low-grade students are not comprehensive

Second, the spirit of entertaining and teaching in teaching instruments is not enough. Third, the cost of most teaching instruments is too high. Therefore, for some remote village schools, many common teaching instruments cannot be popularized.

[0005] However, there are difficulties in designing a circuit with a demonstration instrument and at the same time it can become a self-made test circuit for beginners. First, from the demonstration effect, because there are many concepts in electricity, it is a demonstration of that aspect; The design of the instrument is mainly to demonstrate the physical properties of components that are closely related to frequency, such as capacitors and inductances. Only by demonstrating those aspects can their physical properties be fully displayed. Thirdly, the most important point is, Although some circuits can achieve the purpose of demonstration, they cannot be an excellent self-made experimental circuit, because an excellent self-made experimental circuit also involves the subject of each unit experiment, which is suitable for beginners, and at the same time it also involves the interest of beginners, and Whether it is easy to install successfully and so on, so this kind of excellent line must also be enriched, innovated and developed

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