Voltage indicator with sound indication. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Measuring technology
Comments on the article
The circuit shown in the figure above is a simple voltage indicator with audible indication.
(click to enlarge)
The interval of the working glow of the LEDs is 0,8-1,0 Volts, the operating voltage range is from 10 to 28 volts. The level of operation of the sound indication signaling low voltage can be selected from 10,5-10,2 Volts. Instead of an audible alarm, another LED can be switched on. In this case, the capacitance of the capacitor C2 is chosen equal to 0,47 mF.
The indicator provides sequential switching on of the LEDs as the voltage on the battery rises. The scope of such devices is very wide.
See other articles Section Measuring technology.
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 Gigabyte Z590 Aorus Tachyon motherboard
17.03.2021
Gigabyte Technology has officially unveiled the Z590 Aorus Tachyon motherboard for 10th/11th generation Intel Core processors. Its target audience is the masters of the overclocker shop. Especially for them, a 12-phase power supply system is provided, based on a combination of an Intersil ISL69269 PWM controller and 100-amp Vishay SiC840 DrMOS, as well as a number of useful "chips" for extreme overclocking.
The Gigabyte Z590 Aorus Tachyon motherboard, as you might guess, uses the top Intel Z590 chipset. It belongs to Extended ATX format solutions, equipped with two slots for DDR4 RAM, a pair of PCI Express 4.0 x16 slots (x16/x0 or x8/x8) and two PCI-E 3.0 x16, however, they work in x4 and x1 modes.
There are eight SATA 6 Gb / s ports and two M.2 connectors for connecting drives, one of which supports PCI-E 4.0 x4 (when working with Rocket Lake-S processors). The sound subsystem is based on the Realtek ALC1220-VB audio codec. Networking capabilities are represented by the Intel Wi-Fi 6E AX210 wireless module and 2,5 Gigabit Ethernet.
To the right of the RAM connectors, there are a lot of indicators and buttons that should be of interest to enthusiasts and overclockers. For example, there are UEFI firmware and LN2 mode activation switches, processor multiplier control buttons, as well as contact pads for measuring voltages.
The price of new items is $530.
|
Other interesting news:
▪ Effect of caffeine on drug resistance
▪ DJI FlyCart 30 Cargo Drone
▪ You can get rid of memories
▪ Acoustics of Stonehenge
▪ Gaming PCs Acer Predator AG3-605
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ section of the site for the Builder, home craftsman. Selection of articles
▪ article How to choose and test the right monitor. The art of audio
▪ article Who made the first clock? Detailed answer
▪ article Certification of workplaces according to working conditions
▪ article Preamplifiers. Directory
▪ article Receiver in a soap dish. 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