Teaching demonstration instrument capable of being made by oneself

Abstract

The invention discloses a teaching demonstration instrument capable of being made by oneself, which belongs to the field of teaching instrument demonstration. The teaching demonstration instrument is composed of a self-made capacitor, a change-over switch, a test hole, an oscillator stage, a power amplifier stage, an amplification stage, an equilibrium stage, a voltage division stage, display stages and voice stages. The teaching demonstration instrument aims at allowing students to make objects such as instruments, inductors, capacitors resistors by themselves, and cultivating operational ability of the students. When the self-made capacitor is inserted into the test hole and the change-over switch is in a switching-on state, namely, in a direct current state, the display stages only flash once; when in an alternating current state, namely, the change-over switch is in a switching-off state, the oscillator stage oscillates, high-low conversion of power amplifier stage output occurs, the self-made capacitor forms a charging-discharging state, the equilibrium stage is broken down through amplification by means of the amplification stage, the voltage division stage is started, the display stages and the voice stages form light and sound display, and when oscillation frequency is accelerated, the more display states and the voice stages are started, thus the conductive performance of the object is displayed from another aspect, and the teaching demonstration instrument can be an instrument popularized in schools.

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.

Fourth, the instruments are too complicated for students to make by themselves, so they cannot cultivate their good habits of doing things and their enthusiasm for science by letting them make their own instruments

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