Electric meter capable of magnifying readings

Abstract

The invention is an electric meter capable of magnifying readings, and belongs to the field of electrical experimental equipment. The technical problem solved by the present invention is to provide anelectric meter capable of magnifying readings. In order to solve the above technical problem, the electric meter capable of magnifying readings comprises an electric meter body, a reading magnifyingboard, a laser source, a plastic optical fiber, and a control switch. The reading window of the electric meter body is a transparent frame. The reading magnifying board is fixed to the electric meterbody, is a transparent board provided with scale lines, and is parallel to the scale surface of the reading window. The vertical projections of the scale lines of the reading magnifying board on the dial and the scale lines on the dial of the electric meter body have the same angle of deflection and correspond to each other one to one. The electric meter capable of magnifying readings is widely used in the field of laboratory equipment.

Description

technical field [0001] The invention belongs to the field of electrical experiment equipment, and in particular relates to an electric meter capable of magnifying the number of sights. Background technique [0002] Pointer ammeters, voltmeters, and multimeters are common experimental equipment in middle school physics. Taking ammeters as an example, ammeters are made according to the action of a current-carrying conductor in a magnetic field. There is a permanent magnet inside the ammeter, which generates a magnetic field between the poles. There is a coil in the magnetic field. There is a hairspring spring at each end of the coil. Each spring is connected to a terminal of the ammeter. A rotating shaft is connected between the spring and the coil. At the front of the ammeter, there is a pointer, and the indication of the ammeter can be read through the change of the pointer. [0003] In the study of daily physics class, the readings of ammeter, voltmeter and multimeter are ...

AI Technical Summary

Problems solved by technology

[0003] In the study of daily physics class, the readings of ammeter, voltmeter and multimeter are the course content that every middle school student must learn. The students basically can't see it, which affects the study of the students in the back row. Therefore, it is a problem to be solved urgently at present to develop a kind of ammeter that can zoom in and see the number

Images