Four-gate oscillation science popularization instrument

Abstract

The invention provides a four-gate oscillation science popularization instrument, belonging to the field of teaching instrument demonstration. The four-gate oscillation science popularization instrument is composed of a button change-over switch, a four-gate oscillation source, a testing hole, a compound boosting circuit, an equidifferent voltage reducing circuit, a logic presetting level, a display level and a voice level, wherein two input gates are adopted as active parts, then multiple logical relationships are formed, and the oscillation science popularization instrument is formed; when a tested object is inserted into the testing hole, the button change-over switch selects the four-gate oscillation source to output two paths of power supplies with frequency and without frequency, after amplification of the compound boosting circuit, the equidifferent voltage reducing circuit is started, then a logical prewarning level is started, and the display level and the voice level form light indication and voice indication. For the four-gate oscillation science popularization instrument, a color change unit in the display level controls the light indication to be in the running form display with three color states, and thus certain interestingness is achieved. The four-gate oscillation science popularization instrument can demonstrate the close connection between the structure and frequency of the object according to the frequency of the object, thus the meanings of capacitive reactance and inductive reactance can be understood, therefore, a certain electricity basis is laid for beginners, and the love of vast teenagers for the science is cultivated.

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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