Ultrasonic fishing is a new type of fishing equipment that uses inverters to turn low voltage into high voltage electronic circuits. The circuit that directly converts the electric battery into a high voltage part is called a pre-stage circuit, and the part that processes the high voltage into a fishable part is called a post-stage circuit. Therefore, the ultrasonic fishing device generally consists of a front stage circuit + a rear stage circuit.
The principle of the ultrasonic fishing device is simply an inverter that turns the low voltage into a high voltage electronic circuit. The energy of the ultrasonic fisherman comes from a 12V-48V battery, and it is impossible to fish at such a low voltage. Therefore, to use battery fishing, the first step is to turn the low voltage of the battery into a high voltage that can be used for fishing. This process is an inverter. Because the electricity that can be used for fishing is not only high voltage, but also has certain requirements. The high voltage that directly inverts the battery can not be directly used for fishing, but also the high pressure can be changed before fishing. . Therefore, in the fishing device, the circuit that directly converts the electric battery into a high voltage part is called a pre-stage circuit, and the part that processes the high voltage into a fishable part is called a post-stage circuit. Therefore, the ultrasonic fishing device generally consists of a front stage circuit + a rear stage circuit.
The frequency of the ultrasonic wave is as high as 20,000 Hz or more (more than 20,000 vibrations per second). Because of its high frequency, it has a strong penetrating ability and can penetrate many substances that cannot be penetrated by electromagnetic waves. It can generate a huge force when propagating in the medium. Can be used for cutting, boring, etc. for hard materials. Low-dose ultrasound is a potential carcinogenic and teratogenic factor, and different frequencies and different sound intensities are harmful to different individuals. Because ultrasonic waves have a strong penetrating power for both solids and liquids, when the energy is large, the particles of the material can be vibrated at a high frequency, and part of the energy can be converted into heat energy to increase the local temperature. High-intensity pulsed ultrasonic waves can cause air bubbles to contract, swell, and violently explode when they are propagating in liquids containing micron-sized small bubbles. This phenomenon is called "cavitation." For living organisms, when transient cavitation occurs, cells near the explosion bubble will be damaged. Because the ultrasound cannot penetrate the bone, the ultrasonic damage to the human body is relatively low and almost negligible. Therefore, using this principle, the ultrasonic fisherman emits strong ultrasonic energy through the transducer, causing the brain of the aquatic organism to temporarily become cavitation and coma. The larger the volume, the deeper the impact, so the bigger the fish, the easier it is. catch. By adjusting the output energy, the purpose of capturing large and small is achieved. It is also for this reason that whales in the sea often cause death due to the super-ultrasonic effects of submarines. Utilizing the characteristics of ultrasonic waves, people have invented practical products such as ultrasonic repellers, bionic electronic mosquito repellents, fly killers, and ultrasonic smashers.