Electromagnetic firecracker

Abstract

Disclosed is an electromagnetic firecracker. A radial permanent magnet drive support is mounted on the inner circle of a cylinder type speaker, a centering piston type sound film is mounted in magnetic field space of the drive frame, vibration of the front side and the back side of a sound film plate is changed into spherical alternative deformation movement when the sound film plate vibrates along with a sound coil after the circle center is positioned, and the deformation movement likes vertical movement of a piston in a cylinder, so that oscillating air compression force is produced, and strong sound waves are formed. Analog signals consistent with real firecracker sound wave shapes are written in an MP3 player and input into a simple large-power audio frequency amplifier, and power amplifier signals are output to the sound circle of the electromagnetic firecracker. According to the amplifier, an alternating-current 220-V rectified voltage is used directly, and a single-end output push circuit of a field-effect tube and a B-type single-end input and output complementary audion push-pull power amplification circuit of a common collector are used, so that the electromagnetic firecracker has the advantages of being simple in structure, stable and reliable, low in cost, small in size and low in weight. The sound power of the electromagnetic firecracker is approximate to real firecracker sound, and a sensation effect is provided, accordingly, festival atmosphere can be created, and the electromagnetic firecracker is free of air pollution.

Description

Technical field: [0001] The invention relates to an electronic firecracker, to be precise, a simple high-power audio equipment, especially a high-power electromagnetic firecracker for sound simulation. Background technique: [0002] Because traditional firecrackers seriously pollute the air, especially during the Spring Festival every year, every household sets off firecrackers, and the smoke fills the entire urban space, causing severe smog and seriously endangering people's health. Therefore, some people call for electronic firecrackers to replace traditional firecrackers. However, electronic Compared with traditional firecrackers, firecrackers are very different in all aspects, so they have not been able to replace traditional firecrackers. The main difference lies in the deafening explosion of traditional firecrackers. The explosives explode instantly and have a lot of energy. What people need is this kind of intense and earth-shattering sound effect. [0003] At presen...

AI Technical Summary

Problems solved by technology

[0003] At present, there are many types of electronic firecrackers in the existing technology in the market. The pronunciation methods include loudspeaker playback, electronically controlled air pressure, and high-voltage discharge. The general defect is that the pronunciation energy is too small to achieve a sensational effect. If the power is increased, the cost will inevitably increase. For example, the selection of expensive high-power audio equipment is not only expensive, but also cumbersome and inconvenient.

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