Beat indicator on light emitting diodes. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Digital technology
Comments on the article
A simple cheap beat indicator between signals of different frequencies can be assembled with as little as $5.
The four LED indicator circuit was developed for tuning musical instruments, but it can also be used in a wider range of applications.
(click to enlarge)
Author: C. Franco; Publication: N. Bolshakov, rf.atnn.ru
See other articles Section Digital technology.
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 Vitamin C sometimes helps with colds
06.03.2009
The results of 25 studies conducted around the world to test the alleged preventive effect of high doses of vitamin C against colds are summed up.
In general, hopes did not materialize, but it turned out that in people who were exposed to stress or hypothermia - marathon runners, climbers, skiers and soldiers - the frequency of colds after taking vitamin C was halved. In addition, in those who took ascorbic acid, the symptoms of the disease were slightly easier and passed a little faster.
|
Other interesting news:
▪ New stand CYPRESS SEMICONDUCTOR CY4619
▪ Looking Glass Go Pocket Holographic Display
▪ New technology will speed up smartphone charging by 2,5 times
▪ Counted the number of bubbles in a glass of beer
▪ A battery the size of a grain of salt
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ section of the site RF power amplifiers. Article selection
▪ article Bead Game. Popular expression
▪ article Which village is the birthplace of two marshals and twelve generals? Detailed answer
▪ article Work on a semi-automatic machine for cutting corners of the KRAZE type, etc.. Typical instructions for labor protection
▪ article Low-frequency amplifier on the TDA2004 chip. Encyclopedia of radio electronics and electrical engineering
▪ article Telephone line splitter. 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