A simple small-sized electronic fishing rod. Scheme, description

Free technical library

ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Schemes of radio-electronic and electrical devices

A simple small-sized electronic fishing rod. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Home, household, hobby

Comments on the article

Amateur anglers know that perch and other fish are more likely to take the bait if the line and hook are made to vibrate at a frequency of 1,5 to 12 Hz.

A non-contact small-sized electronic jig allows you to choose the required frequency in a wide range when catching various fish. It is easy to manufacture and does not require adjustment. All its parts, including the power source, are housed in a handle case.

The diagram of the electrical part of the fishing rod (electronic unit) is shown in fig. 1. The master oscillator of the fishing rod is an asymmetric multivibrator that generates pulses of constant duration and amplitude. The pulse repetition rate is adjustable from 1,5 to 12 imp/sec by changing the resistance of the variable resistor R1. The pulse repetition rate and their duration are determined by the capacitance of the capacitor C1 and the resistance of the resistor R2.

Simple small-sized electronic fishing rod
Rice. 1. Scheme of the electronic unit of the fishing rod

The use of transistors of different conductivity made it possible to create a circuit with a minimum number of parts. Transistor T2 operates in key mode, and almost the full battery voltage is applied to the relay winding P1) during the operating pulse. The voltage drop across the collector of transistor T2 during the operating pulse is several hundredths of a volt at a power supply voltage of 1-1,5 V.

The system that drives the nod is a low-resistance solenoid of the type of relay RS-4, RS-52, RES-10, RES-13, RES-22, etc. The relay winding is wound with PEV-1 wire; 0,41-0,44 mm, its resistance is 2,4-2,6 ohms. The current consumption of the electronic unit at an average frequency of 30-50 mA. A variable resistor R1 with a resistance of 4,7 to 10 kΩ can be with a switch, and then there is no need to use a separate button or switch.

The location of the parts on the board can be seen in Fig. 2 and does not require special explanation. It should only be noted that in this design two capacitors of the EM4-50-M type are used in parallel. The hard terminals of the relay winding, variable resistance and contacts for connecting the battery can be used for fastening and mounting all other parts.

Simple small-sized electronic fishing rod
Rice. 2. Location of electronic unit parts on the board: 1 - frequency controller; 2 - solenoid with holder assembly; 3 - push-button switch; 4 - board; 5 - transistors; 6 - capacitors

Simple small-sized electronic fishing rod
Rice. 3. Appearance of the electronic fishing rod: 1 - rod; 2 - frequency regulator; 3 - coil; 4 - push-button switch; 5 - body

A fired cartridge case from a small-caliber cartridge is soldered to the relay armature, into which a whip made of vinyl plastic, nylon or other elastic material is inserted.

On fig. 3 shows the appearance of a fishing rod with one reel. One FMC element serves as a battery (6-8 hours of operation). The basis of the electronic unit is a handle, which is a hollow cylinder made of foam, thick cardboard or other lightweight material. In the front part of the body of the handle, a hole with a diameter of 8 mm was made for the rod whip and a variable resistance was installed. In the rear part there is a clamping plug - an FMC element with a conical spring. In the manufacture of the handle, it is necessary to leave a gap for the free movement of the relay armature in the assembled rod.

A correctly assembled circuit starts working immediately if the gain of the transistors is in the range from 50 to 80.

The rod has proven itself well in ice fishing in the Gulf of Finland, Lake Peipus and in waters near Moscow.

The simplicity of the circuit and design allows you to make an electronic fishing rod for any novice radio amateur.

Author: A.N.Manzyuk

See other articles Section Home, household, hobby.

Read and write useful comments on this article.

<< Back

Latest news of science and technology, new electronics:

Machine for thinning flowers in gardens 02.05.2024

In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers. ... >>

Advanced Infrared Microscope 02.05.2024

Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>

Air trap for insects 01.05.2024

Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>

Random news from the Archive

The cost of OLED TVs affects consumer activity 05.01.2012

While LG Electronics is set to showcase its 55-inch OLED TV (as Samsung Electronics does its similar products) at the Consumer Electronics Show in Las Vegas Jan. 10-13, market acceptance of such high-end devices will be, according to Taiwanese industry sources, entirely dependent on cost.

DisplaySearch estimates that the new 55-inch OLED TVs will hit the market in the third quarter of 2012 for about $8000, before dropping to $2013 by the end of 4000, thanks to rising sales volumes and new ways to make these products cheaper. However, due to the high manufacturing cost of OLED TVs, annual shipments of OLED TVs from major players in the TV market will only reach 500 or less.

What matters, sources say, will be what technologies LG and Samsung will use to produce the OLED TV. It is pointed out that if LG continues to manufacture such products using the white light OLED technology it acquired earlier from Eastman Kodak, the power consumption and picture quality of its OLED TVs will remain a big problem.

Other interesting news:

▪ Artificial intelligence recognizes silent speech

▪ XNUMXD echography

▪ Miniature key component for a quantum computer

▪ Ecological medicines from waste paper industry

▪ Printed lasers

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ site section Electric meters. Article selection

▪ article And you, friends, no matter how you sit down ... Popular expression

▪ article What is chromium? Detailed answer

▪ article Hammer drill. home workshop

▪ article Knots of amateur radio equipment. Generators, heterodynes. Directory

▪ article Telephone line holding device. Encyclopedia of radio electronics and electrical engineering

Leave your comment on this article:

All languages of this page

Home page | Library | Articles | Website map | Site Reviews