Automobile. Electronic devices. Schemes, articles of the Free Technical Library

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Automobile. Electronic devices. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Automobile. Electronic devices

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Acoustic design of the low-frequency dynamic driver

Section Acoustic systems. Improving the sound quality of modern acoustic systems is achieved mainly through the use of new materials and technologies. Designers from foreign firms Jamo and Paradigm are developing loudspeakers consisting separately of a low-frequency link (subwoofer) and two high-frequency loudspeakers. Subwoofers are a case with an acoustic panel located in it and dividing it into 2 volumes with a dynamic low-frequency head mounted on it. This head with the front surface of the diffuser works on one closed volume of the case, and on the back - on the second, with a phase inverter tuned to a certain frequency. Designs with two phase inverters tuned to different frequencies are called dual tuning systems. ... >>

Transistor converter at 144 MHz

Section Radio reception. The converter, which is described in this article, allows you to receive signals from amateur VHF radio stations in the range of 144-146 MHz. It is designed to work with a communication receiver having a range of 4-6 MHz. The converter is simple in design and easy to set up, and therefore can be easily repeated. It is intended mainly for work in the field. To power the converter, a voltage of 6 V at a current of 18 mA is required. The noise factor of the converter is 4,5-5 kTo, the design dimensions are 130x45x20 mm ... >>

101 advice of the master Samodelkin

Section Ham Radio Technologies. 1. If you countersink a hole for a countersunk screw head in a viscous sheet metal (copper, aluminum, soft duralumin) with a thickness less than a third of the drill diameter with a hand drill and at the same time fix the part with clamps on a PCB or hard wood plate, then the conical recess will turn out more accurate. 2. When cutting threads in soft metals (for example, in aluminum), you should limit yourself to threading only the first tap. In such a hole, the screw is held more firmly. 3. The thread after cutting the screw or stud will be easy to restore if you first screw the die or nut onto them. Having cut off or bit off the excess with wire cutters, the end of the threaded part is sawn off with a file, and then the die (nut) is screwed - the thread is restored ... >>

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Articles on automotive electronics

Articles on automobile electronic devices; diagrams of automotive electronic devices; descriptions of automotive electronic devices: 185 articles

All articles on automotive electronics

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

The electric scooter will follow the rules of the road 18.08.2023

In the Australian city of Melbourne, a unique experiment with electric scooters is underway, aimed at combating violations of the Rules of the Road (SDA). Electric scooters are now equipped with cameras and GPS navigation systems that will strictly enforce speed limits and routes. In case of violation, the scooter activates a loud sound alarm.

During the pilot project, new technologies are being applied to 25 electric scooters. Upon successful completion of the experiment, these safety measures will be extended to all electric scooters in the city of Melbourne.

Melbourne's deputy mayor, Nicholas Rees, explained that while electric scooters have become a popular mode of transportation, they have also caused numerous problems. Violations of traffic rules, inattention to traffic rules, including driving through pedestrian zones and speeding, have become common.

Melbourne is making efforts to tightly regulate the use of electric scooters. A speed limit of up to 20 km/h was introduced, as well as a requirement for drivers to wear a helmet. In addition, regulations now prohibit the use of electric scooters by persons under the age of 16.

It is planned that in the future, electric scooter rentals will also automatically control the correct parking, as well as be equipped with devices to determine the degree of intoxication, which will prevent drunk people from driving them.

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