Electric shock from 5 volts. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Security and safety. Personal safety
Comments on the article
Details Description:
R1 - 330 Ohm; R2 - 30 Ohm; VD1,VD2 - KD105; VT1, VT2 - KT816;
C1 - 1000 uF x 400 V (select with low leakage, for example, type K50-73 or Japanese-made)
The coils are wound on a ferrite magnetic circuit with a cross section of at least 0,5 cm and a permeability of 2000, for example, on a ring or on an armored magnetic circuit. Coil L3 has 600 turns of PELSHO or PEV-2 wire with a diameter of 0,2 mm. 3 layers of insulation are laid on top of the L2 coil, and then coils L1 and L2 are wound: L1 - 8 turns of PEL wire with a diameter of 0,4 mm with a tap from the middle; L2 - 12 turns of PEL wire with a diameter of 0,8 mm.
The device is mounted in a hard case; the distance between the pins X1 and X2 is 30-40 mm, their length is 50 mm. Power is supplied by the KN1 button for a short time. Power source - 4 series-connected elements D-0,55.
Technical data:
100uF storage capacitor (more than enough)
The voltage on the storage capacitor - 350 V
Saving the charge on the capacitor after turning off the electric shock power is at least 30 minutes.
Author: George; Publication: cxem.net
See other articles Section Security and safety. Personal safety.
Read and write useful comments on this article.
<< Back
Latest news of science and technology, new electronics:
Artificial leather for touch emulation
15.04.2024
In a modern technology world where distance is becoming increasingly commonplace, maintaining connection and a sense of closeness is important. Recent developments in artificial skin by German scientists from Saarland University represent a new era in virtual interactions. German researchers from Saarland University have developed ultra-thin films that can transmit the sensation of touch over a distance. This cutting-edge technology provides new opportunities for virtual communication, especially for those who find themselves far from their loved ones. The ultra-thin films developed by the researchers, just 50 micrometers thick, can be integrated into textiles and worn like a second skin. These films act as sensors that recognize tactile signals from mom or dad, and as actuators that transmit these movements to the baby. Parents' touch to the fabric activates sensors that react to pressure and deform the ultra-thin film. This ... >>
Petgugu Global cat litter
15.04.2024
Taking care of pets can often be a challenge, especially when it comes to keeping your home clean. A new interesting solution from the Petgugu Global startup has been presented, which will make life easier for cat owners and help them keep their home perfectly clean and tidy. Startup Petgugu Global has unveiled a unique cat toilet that can automatically flush feces, keeping your home clean and fresh. This innovative device is equipped with various smart sensors that monitor your pet's toilet activity and activate to automatically clean after use. The device connects to the sewer system and ensures efficient waste removal without the need for intervention from the owner. Additionally, the toilet has a large flushable storage capacity, making it ideal for multi-cat households. The Petgugu cat litter bowl is designed for use with water-soluble litters and offers a range of additional ... >>
The attractiveness of caring men
14.04.2024
The stereotype that women prefer "bad boys" has long been widespread. However, recent research conducted by British scientists from Monash University offers a new perspective on this issue. They looked at how women responded to men's emotional responsibility and willingness to help others. The study's findings could change our understanding of what makes men attractive to women. A study conducted by scientists from Monash University leads to new findings about men's attractiveness to women. In the experiment, women were shown photographs of men with brief stories about their behavior in various situations, including their reaction to an encounter with a homeless person. Some of the men ignored the homeless man, while others helped him, such as buying him food. A study found that men who showed empathy and kindness were more attractive to women compared to men who showed empathy and kindness. ... >>
| Random news from the Archive Energy from the cold
14.09.2019
A team of scientists from Los Angeles and Stanford University have created a device that generates current by channeling the residual heat of the day into chilled air. Thus, according to the authors of the project themselves, their device can also use space cold to create a renewable energy source.
"We believe that this technology will effectively complement the solar panels and allow energy to be produced even during those hours when access to sunlight is closed," says Aaswat Raman, one of the authors of the project.
With all its merits, solar energy is, alas, not the solution to all energy problems of mankind. Even on Earth, people return home and begin to actively use electrical appliances already in the evening hours. Of course, the energy accumulated during the day can be stored - but it is much more economical and easier to supplement it with "night" production systems.
Unlike many analogues, the new device works due to the thermoelectric effect. Using a material called a thermocouple, engineers can convert temperature changes into voltage differences. For this, on the one hand, a potential source of heat is needed, and on the other, a place for a gadfly of thermal energy. The problem is how to arrange the materials correctly so that they generate voltage from the cooled medium.
Moreover, most thermoelectric systems rely on materials that are too expensive for mass use, so the team got creative and designed their products from the simplest and cheapest parts possible. The scientists assembled a cheap thermoelectric generator and braced it with a black aluminum disc to radiate heat into the night air when it is turned toward the sky. The generator was placed in a polystyrene case, covered with an infrared-transparent window, and connected to one tiny LED.
As a result of field tests, it turned out that on a cold night, when the temperature drops below zero, the device generates approximately 0,8 milliwatts of power, which corresponds to 25 milliwatts per square meter. This is enough to power, for example, a hearing aid or a laser pointer.
Sounds modest, doesn't it? However, for a prototype assembled literally "on the knee", these are considerable numbers. The team suggests that with the right settings and the right conditions, they can achieve 500 milliwatts per square meter. In addition to lighting in the evening and at night, our device is ideal for generating electricity wherever it is needed.
|
Other interesting news:
▪ A revolution in exploration
▪ Acer ConceptD 7 SpatialLabs Edition XNUMXD laptop
▪ mystical experience
▪ Origins of human speech found
▪ Hidden identification with invisible QR codes
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ section of the website job descriptions. Article selection
▪ article Flowers of innocent humor. Popular expression
▪ What city is Philadelphia cream cheese named after? Detailed answer
▪ article Basic fire safety measures
▪ article Turn on the three-phase motor. Encyclopedia of radio electronics and electrical engineering
▪ article Expanding the capabilities of the indicator probe. 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
www.diagram.com.ua
2000-2024
Arabic
Bengali
Chinese
English
French
German
Hebrew
Hindi
Italian
Japanese
Korean
Malay
Polish
Portuguese
Spanish
Turkish
Ukrainian
Vietnamese