Microphone amplifier on the KM551UD2 chip. Scheme, description

Free technical library

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

Microphone amplifier on the KM551UD2 chip. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Preamplifiers

Comments on the article

The amplifier is assembled on the KM551UD2 operational amplifier.

Main characteristics

Supply voltage	+/- 15
Input voltage, mV	1
Output voltage, mV	250
Reproducible frequency range, Hz	20 20000 ...
Signal-to-noise ratio, dB	60

Amplifier circuit

Microphone amplifier on the KM551UD2 chip. Amplifier

The amplifier is powered by a bipolar 15 volt power supply. The diagram shows one amplification channel, and in parentheses is the pin numbering for the second channel.

Download PCB (Author: Edi March)

Publication: radiokot.ru

See other articles Section Preamplifiers.

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

namesake letter 16.04.2002

Canadian researchers have found that people are more likely to respond to an email from their namesake than from someone with a completely different last name.

Kenneth Oates and Margo Wilson of McMaster University in Ontario sent out an email to 2960 people with questions about their local sports clubs. Some of the letters were signed by the full namesake of the addressee, some - by a person with the same surname and some - with the same name as the addressee. It turned out that a letter from a namesake is answered 10,3% more often, a letter from a person with the same last name is answered 9% more often than from a "stranger". If only the names of the sender and recipient match, this has little effect on the willingness to respond.

The authors of the study concluded that for many of us, the alleged relationship with the namesake has a certain psychological significance.

Other interesting news:

▪ Universal molecule against all types of colds

▪ The concentration of carbon in the air has reached a record high

▪ Micromax A115 Canvas 3D smartphone with Naked eye 3D display

▪ Volvo FE Electric garbage truck

▪ Lexus RZ 450e electric crossover

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Radioelectronics and electrical engineering. Article selection

▪ article Management. Lecture notes

▪ article What were the first means of transportation? Detailed answer

▪ article Yew berry. Legends, cultivation, methods of application