Discharge delay type double-purpose enlightening device

Abstract

The invention provides a discharge delay type double-purpose enlightening device and belongs to the field of teaching instrument demonstration. The double-purpose enlightening device is formed by a two-gate oscillation source, a counter switch, test holes, a back-and-forth amplification unit, a series-type voltage dividing unit, a logic interface unit, a time delay unit, an optical display level, a cycle unit and a voice level. A two-input gate circuit serves as an active element of each unit, and multiple-function logical relationship is formed, thereby expanding students' thinking; when the test holes are inserted by units under test, the counter switch selects the two-gate oscillation source to realize output in frequency and no-frequency two output modes; after amplification of the back-and-forth amplification unit, the series-type voltage dividing unit is started, and then, the voice level and the logic interface unit are excited; after time delay of the time delay unit, the optical display level is started; and when the last luminous indicator in the optical display level emits light, the cycle unit is started to carry out next display cycle. The double-purpose enlightening device can fully demonstrate close link between the resistance element structure and frequency, and can help students to understand meanings of capacitive reactance and inductive reactance, thereby laying a certain electrical foundation for the students.

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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