Portable ultra thin passive analogue electron circuit experiment box

Abstract

The invention relates to a portable ultrathin passive analog electronic circuit test box, including a box body lined with a screening metallic layer, a bread board and many test jacks; the box bottom-side back panel is installed with an oscillograph wiring bayonet, a functional signal generator wiring bayonet, a power supply wiring bayonet and an AC millivoltmeter wiring bayonet, connected with an oscillograph wiring jack, a functional signal generator wiring jack, a power supply wiring jack and an AC millivoltmeter wiring jack on the box bottom-side front panel, respectively; the right and bottom surfaces of the top cover and the box bottom of the box body are connected with the same self-locking device, respectively; the box bottom-side back panel has the box body holding a potentiometer and a DC signal source of -5V-+5V. It can achieve an ideal experimental effect; it is convenient for the students to prepare or design experiment after class and convenient to store and transport; it has good EMC.

Description

technical field [0001] The ultra-thin passive analog electronic circuit experiment box of the invention belongs to the field of teaching instruments, and is an upgraded replacement product of the common analog electronic circuit experiment box commonly used in current colleges and universities. Background technique [0002] The prior art similar to the present invention is an analog electronic circuit experiment box. The basic structure is to use aluminum profiles or ABS plastics to make a box. The box is equipped with a simple DC power supply and a simple function signal generator. Copper-clad plates are used in the box. In the experimental area of ​​the manufactured unit circuit, each experimental unit in the experimental area is equipped with an appropriate amount of test jacks. This kind of experimental box is equipped with an oscilloscope and a digital multimeter outside to complete the experimental items specified by the experimental box. [0003] However, there are m...

AI Technical Summary

Problems solved by technology

[0003] However, there are many defects in this experimental box in actual use

It has not been fundamentally improved for a long time, and the structure of the simulation experiment boxes provided by various manufacturers is basically the same, which is difficult to meet the current higher quality teaching needs

Its main problem is: the box body of existing analog electronic circuit experiment box is too big, occupies too much laboratory space, is not easy to carry simultaneously; The performance indicators are quite different, the humming sound is serious, the output voltage ripple and noise are relatively large, which affects the small signal experiment effect

The transformer in the box is large in size, which makes it difficult to reduce the thickness of the whole box; the performance index of the simple function signal generator in the box is far from that of the general function signal generator, with simple functions, narrow frequency band, and poor waveform quality; It is made of insulating materials and has no electromagnetic shielding effect, which affects the effect of small signal experiments and serious electromagnetic interference

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