Test circuit composed of triode

Abstract

The invention discloses a test circuit composed of triode and belongs to the demonstration field of teaching tools. The test circuit is composed of a button-type circuit switch, a complementary pulse unit, a test hole, a tubular lifting circuit, a step voltage system, a display system, and a voice level. If a test capacitor is connected to the two ends of a test hole, the current which is produced by the complementary pulse unit runs through a frequency element under the test, then enters the tubular lifting circuit and is subject to amplification, and the output of the circuit excites the step voltage system, etc., and the display of sound and light is realized. The stronger the output signal is, and the brighter the display system is. The complementary pulse unit can become a pulse power supply form having frequencies, and can have a zero frequency, i.e., DC form. The button-type circuit switch provides an opportunity for audience to understand the physical phenomenon of capacitors and inductors in the presence of current and DC having frequencies, and provides dynamic effects which can attract the audience, develop the young's love for science, and helps to improve quality-oriented education for 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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