UZCH based on the A2030 chip. Scheme, description

Free technical library

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

UZCH based on the A2030 chip. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Transistor power amplifiers

Comments on the article

The A2030 chip, in my opinion, is the best integrated power amplifier currently available. It is far ahead of other integrated amplifiers on the market in such important indicators as output power and harmonics. The proposed stereo UCH based on the A2030 has a low harmonic coefficient and high output power.

(click to enlarge)

UZCH parameters:

Output power, W at Рн=4 Ohm.......2х180
at Rn \u8d 2 Ohm ....... 90xXNUMX
Harmonic coefficient, %...... no more than 1
Supply voltage, V......± 22

A preamplifier, tone, volume and balance controls are assembled on the DA1 chip. Resistors R1 and R2 are used to adjust the volume and balance, respectively, and R3 and R4 are used to adjust the tone. Next, the AF signal goes to the DA3, DA4 microcircuits, which "rock" the transistors VT1 ... VT4. They should be installed on heat sinks. Diodes VD1...VD4 can be any medium power. The received high power AF signal is fed to the load VA1 (VA2).

The loudspeaker power must be at least 200 W at 4 ohms and at least 100 W at 8 ohms.

This UZCH can be used in discos, for scoring large areas or halls.

Author: S.Sych

See other articles Section Transistor power amplifiers.

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

Warm house 10.10.2008

Buildings consume up to 45% of all energy consumed in the world. That's more than all the cars in the world spend combined.

In Germany, a program is being undertaken to strengthen the thermal insulation of old houses. An average European house requires 160-300 kilowatt-hours per square meter of area per year, and a building with modern thermal insulation requires only 15-30 kilowatt-hours.

Heating or air conditioning is switched on only on the coldest or hottest days. True, in new construction in Germany, such houses now account for only two percent.

Other interesting news:

▪ SoC Snapdragon 690

▪ high speed jet engine

▪ Eye of Gromozeka

▪ plastic airplane

▪ Keyboard disinfection

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the website Experiments in Physics. Selection of articles

▪ article Shallow philosophy in deep places. Popular expression

▪ article Who created the typewriter? Detailed answer

▪ article Cantilever screw press. home workshop

▪ article Two soldered wires, but replace the battery. Encyclopedia of radio electronics and electrical engineering

▪ article Carbonization of sugar. Chemical experience

Leave your comment on this article:

All languages of this page

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