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Photoelectric signal conversion demonstration instrument

A technology of photoelectric signal and demonstrator, which is applied in the direction of instruments, educational tools, teaching models, etc., can solve the problems such as the difficulty of understanding the content of knowledge and the lack of perceptual knowledge of students, and achieve the effect of simple structure, easy operation, and clear phenomena

Inactive Publication Date: 2007-09-26
上海市嘉定区第二中学
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in high school teaching, only the simple principles of this aspect are introduced. Since there is no supporting simple experimental equipment for demonstration, students lack perceptual knowledge, and it is difficult to deeply understand this part of knowledge.

Method used

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  • Photoelectric signal conversion demonstration instrument
  • Photoelectric signal conversion demonstration instrument
  • Photoelectric signal conversion demonstration instrument

Examples

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Embodiment Construction

[0011] A photoelectric signal conversion demonstration instrument as shown in FIG. 1 and FIG. 2 includes a housing 1 , and four corners of the bottom of the housing 1 are fixed with feet 5 . A switch K is fixed on the shell 1 1 、K 2 、K 3 , LED D 1 , photodiode D 2 , Buzzer F, speaker BY, the above-mentioned devices and exposed shell 1. Inside the shell 1 is provided with an amplifier circuit 10, a power supply E 1 ,E 2 , Music card circuit S. Wherein, the music card circuit S is obtained from a purchased music card purchased directly from the market and has its own power supply. Described buzzer also is carried by music card, connects music card circuit S. LED 1 Connected in parallel to the buzzer F, the switch K 1 Set in the music card circuit S to control the work of the music card circuit, the switch K 2 For a two-way switch, set the buzzer F and light-emitting diode D 2 between. The photodiode D 2 with LED D 2 The intervals are relatively set and one end is ...

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Abstract

This invention discloses one photoelectric signal conversion demonstration device, which comprises shell, three switches fixed on shell, light electrode, light sensitive diode, buzzer device, microphone, amplification circuits fixed inside the shell, two powers and music card circuit, wherein, the buzzer connects music card circuit and the light diode is connected to buzzer with one set in the music card circuit and second as double one between buzzer and light diode; the light sensitive diode is relatively set to light diode wit one end connected with amplification circuit and with light sensitive circuit output end is connected to microphone and one power and third switch connect amplification circuit.

Description

technical field [0001] The invention relates to a teaching demonstration device, in particular to a photoelectric signal conversion demonstration device in middle school physics teaching. Background technique [0002] In today's information age, people's work, life and study, the advancement of science and technology, and the development of society are all closely related to information. An important way of current information transmission is optical fiber transmission. To realize optical transmission of information, an important aspect is the conversion of photoelectric signals. The knowledge of this aspect has been included in the high school electrical content. However, in high school teaching, only the simple principles of this aspect are introduced. Since there is no matching simple experimental equipment for demonstration, students lack perceptual knowledge and it is difficult to deeply understand this part of knowledge. Contents of the invention [0003] The techni...

Claims

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Application Information

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IPC IPC(8): G09B23/06G09B25/00
Inventor 姚成兴董洁婷
Owner 上海市嘉定区第二中学