Menu English Ukrainian russian Home

Free technical library for hobbyists and professionals Free technical library


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

Amplifier on a TDA1515 chip, 2x12 watts. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Transistor power amplifiers

Comments on the article Comments on the article

Amplifier on a TDA1515 chip, 2x12 watts

Amplifier on a TDA1515 chip, 2x12 watts

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

Blocking stolen gadgets 11.02.2014

California state senators have filed a bill requiring manufacturers to add a "kill-switch" option to their smartphones and tablet computers. The move is being touted as a forced response to the rise in mobile device theft in the US. The submitted bill, the initial ideas of which we have already talked about on our website, requires the implementation of a technological solution that will make the device absolutely useless if it is stolen, blocking access to the main functions of the device. The technology, despite the regional peculiarity of the bill under consideration, should ensure the functioning of the "kill-switch" system both in California itself and beyond its borders. The feature lock will apply to absolutely anywhere in the United States.

Under Act No. 962, the California Senate requires manufacturers to implement a technology solution to block stolen devices. All mobile devices that went on sale from January 1, 2015 fall under the bill. True, the regulations do not at all describe the principle of the "kill-switch" technology and the methodology for its implementation. It is up to manufacturers to find the right solution privately. Its integration is possible both with the help of the software component of the device, and using the hardware approach.

A combined solution to this problem is also possible, which also provides for the interaction of mobile operators and manufacturers. But a prerequisite, according to California senators, is the absolute reliability of the chosen method, which must be resistant to attempts to reinstall the operating system, the intervention of third-party software to crack the "firmware" and other methods that involve resetting the existing protection on smartphones. The bill also defined a mandatory functional component that is subject to blocking: making phone calls, accessing the Internet and the ability to launch applications. True, whether this applies to all applications installed in the device or the list will have a certain list of programs is not specified.

The bill also provided for penalties for those who decide not to heed the demands of the Senate. For each device sold that does not contain the described technological solution, a fine of $500 to $2500 is due. However, individuals and used devices do not fall under the "punitive" measures of California officials. Users will be able to disable the option at their discretion, but retailers will be strictly prohibited from offering such a service on their own.

Given the explosive growth in sales of mobile electronics, especially in the United States, half of the robberies in San Francisco and 75% of such crimes in Oakland were committed because the victim had a mobile device that the robber decided to profit from. The statistics of such criminal atrocities in Los Angeles is also growing every year, along with smartphone sales, according to local police reports.

The described problem has approximately the same scale character for all states of America. Therefore, if the submitted bill is approved, then with a high degree of probability there will be a "chain reaction" in all administrative units of the United States. Ultimately, according to experts, this will lead to the introduction of "kill-switch" everywhere, and not just at the local level. Then manufacturers will not need to focus on the peculiarities of California legislation, since the US commercial market will not be able to offer the buyer "unprotected" mobile devices.

Samsung, Google, Microsoft and Apple have already heeded the demands to secure their products. In turn, the Cupertians introduced the lock activation function in the new iOS 7 operating system, and the South Korean manufacturer used the "Lojack for Mobile Devices" software in some of its smartphones.

Other interesting news:

▪ Sweet lovers are prone to alcoholism

▪ Bank collapse

▪ Firewood on the grass

▪ Wireless charging of an electric car - fast and safe

▪ A new type of tablet from Lenovo

News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

▪ section of the site Big encyclopedia for children and adults. Selection of articles

▪ article by Ronald Wilson Reagan. Famous aphorisms

▪ article Where did the very first flush toilet appear? Detailed answer

▪ article Works at the intersection of the main feeder lines of wire broadcasting with wires of contact networks of ground electric transport. Standard instruction on labor protection

▪ article Biogas on the farm. Encyclopedia of radio electronics and electrical engineering

▪ article Tearing the napkin. Focus Secret

Leave your comment on this article:

Name:


Email (optional):


A comment:





All languages ​​of this page

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

www.diagram.com.ua

www.diagram.com.ua
2000-2024