Sound generator for trapping bream

Abstract

The invention discloses a sound generator for trapping a bream, which comprises a transformer, a capacitor and triodes. An output end of an oscillating coil of the transformer is connected in series with the capacitor; a central axle head of a control coil of the transformer is connected with a negative pole of a power source and emitters of the triodes through resistors; the other two ends of the control coil are respectively connected with base electrodes of the triodes through diodes; a centre tap of a power coil of the transformer is connected with a positive pole of the power source through a shunt resistor of an ampere meter and a switch; one end of the power coil is connected with a collector of a triode and the other end of the power coil is connected with a collector of another triode and then is grounded; a voltmeter is connected in parallel with a power input end; and the ampere meter is connected in parallel with the shunt resistor. The device for trapping the bream has the advantages of simple structure, small volume and convenient use. Resonance is generated between the shock waves of the device and the sleeping frequency of the bream, so that the bream is trapped in sleep.

Description

Technical field [0001] The invention relates to a sonic fishing device, in particular to a sonic generator for trapping bream. It belongs to the technical field of acoustic vibration sensing electronics. Background technique [0002] Breams are generally 20-25 cm long and weigh 250-500 grams. The body is slightly flat. The kiss is blunt and protrudes forward. The mouth is extremely wide and split horizontally. The lower jaw has sharp and developed horny edges. 2 rows of hypopharyngeal teeth. Lateral line scales 72-82. The abdomen is round without ventral ribs. The caudal stalk is broad, the middle of the tail fin is truncated, and the two edges are obliquely upward and crescent-shaped. The body cover is blackish, the ventral side is pale white, the pectoral fin is yellowish brown, and the other fins are lighter in color. [0003] At present, people generally use drag nets and cast nets when fishing in large rivers, large lakes or large areas of water. Cannot catch bream e...

AI Technical Summary

Problems solved by technology

It is not possible to specialize in catching bream. It is inefficient to use a cast net to fish in a wider water surface. It is labor-intensive to use a pull net to fish, and it is very inconvenient to catch fish. When using a cast net or a pull net, the caught fish are easily injured Fish that escape due to injury or missed catch will be frightened, thus affecting the normal growth of fish and the occurrence of various fish diseases; There are many aquatic plants and rocks at the bottom, it is difficult to use the net, and the efficiency of catching bream is low

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