Rechargeable mobile demonstration device for site electric teaching experiment

Abstract

The invention provides a rechargeable mobile demonstration device for a site electric teaching experiment. The device includes explosion-proof glass, a desk body and a vertical display board, and is characterized in that the vertical display board is fixed on a front end of a top surface of the desk body, side boards are fixed on a left side and a right side of the top surface of the desk body, the explosion-proof glass is arranged on the vertical display board, the explosion-proof glass is connected to a front end of a reflector arranged obliquely at 45 degrees, the left side and the right side of the reflector are separately connected to the tops of the side boards, electronic element rotation boxes are moveably installed on back sides of the side boards, a voltage adjusting power sourceis installed on a back part of the desk body, an insulating pad covers the top surface of the desk body, power source line terminals are installed on a left side and a right side of the top surface of the desk body, an insertion-type test circuit board is arranged in a middle area of the top surface of the desk body, an ampere meter electrically connected to the insertion-type test circuit boardand a voltmeter are fixedly installed on the vertical display board, universal wheels are installed on four corners at lower ends of the desk body, LED light tubes are arranged on upper parts of innersides of the side boards and the vertical display board, and shading boards are arranged on the LED light tubes.

Description

technical field [0001] The invention relates to the technical field of teaching equipment, in particular to a rechargeable on-site audio-visual experiment mobile demonstration device. Background technique [0002] In middle school physical and electrical experiments, electronic components such as ammeters, voltmeters, resistors, capacitors, reactances, light bulbs, switches, batteries, diodes, and triodes are used. In addition, many of the existing physical and electrical demonstration instruments are hanging. If these electronic components are connected in advance, the physical and electrical demonstration instrument will be hung on the wall for demonstration in class, and the assembled circuit will be shown to the students. To demonstrate a fixed circuit, students have no hands-on process, which lacks interest and is not conducive to students' understanding and memory of electrical knowledge. [0003] Because many experiments need to be operated in a gravity environment, ...

AI Technical Summary

Problems solved by technology

In addition, many of the existing physical and electrical demonstration instruments are hanging. If these electronic components are connected in advance, the physical and electrical demonstration instrument will be hung on the wall for demonstration in class, and the assembled circuit will be shown to the students. Demonstration of a fixed circuit, students do not have a hands-on process, lack of interest, and it is not conducive to students' understanding and memory of electrical knowledge

[0003] Because many experiments need to be operated in a gravity environment, although some teachers put the physical and electrical circuit plugboard on the table for demonstration, so that they can operate by themselves, but the students can’t see clearly when sitting in the seat, and the learning efficiency of the students is low.

[0004] In addition, during the use of the existing physical and electrical demonstration equipment, it is not possible to isolate the demonstration teacher from the students. During the demonstration, there are many students watching, and some demonstrations have the possibility of high current, high voltage, and even explosion. After the students touch the relevant equipment will cause harm

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