Tone and volume controls. Schemes, articles of the Free Technical Library

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Tone and volume controls. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Tone, volume controls

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Charger for car battery starter batteries

Section Car. Batteries, chargers. The simplest charger for automotive and motorcycle batteries, as a rule, consists of a step-down transformer and a full-wave rectifier connected to its secondary winding [1]. A powerful rheostat is connected in series with the battery to set the required charging current. However, such a design turns out to be very cumbersome and unnecessarily energy-intensive, and other ways of regulating the charging current usually complicate it significantly. In industrial chargers, KU202G trinistors are sometimes used to rectify the charging current and change its value. It should be noted here that the forward voltage on the included trinistors with a large charging current can reach 1,5 V ... >>

Anti-theft device

Section Security and car alarm. Unlike well-known industrial and amateur anti-theft devices, this design does not have a single mechanical contact and a hidden toggle switch, it is simple, reliable and durable. It is an electronic mass switch. As practice suggests, for the purpose of fire safety, even with short-term parking of the car, it is advisable to disconnect the on-board network from the battery ... >>

External sources of electromagnetic radiation

Electrical section. Much more often, the cause of an unfavorable electromagnetic environment in apartments is not internal sources of magnetic fields, but those that are outside it: cable networks passing along the outer wall of residential premises, power cables for elevators, public power distribution boards. It is their influence that poses the greatest danger to humans. Indeed, in fact, it would never occur to anyone for a long time and without the need to turn on any household appliances (whether it be a vacuum cleaner, a mixer, a coffee maker), that is, the time of their exposure to a person is limited by the time of their use. The magnetic fields formed by external sources act almost constantly. In this case, the current that passes through them can reach several hundred amperes. Therefore, measuring instruments are fixed in residential premises with such a dangerous neighborhood, the magnetic field induction is more than 3 μT ... >>

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Articles on tone controls, volume controls

Articles on tone controls, volume; tone and volume control circuits; descriptions of tone controls, volume: 71 articles

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

Daimler turns coal-fired power plant into energy storage 06.07.2018

Mercedes-Benz Energy, a subsidiary of the German automaker Daimler, has teamed up with partners to create a massive energy storage facility at the Elferlingsen coal-fired power plant using 1920 battery modules for electric vehicles.

The coal-fired power plant, built in 1912, was recently closed. The 8,96 MW/9,8 MWh system running in her building uses a total of 1920 batteries. These batteries would be enough to power 600 Daimler Smart electric vehicles.

"Large energy storage is a symbol of the transformation in the way energy is stored and used, from supplying electricity to the grid from fossil energy sources, to a sustainable extension of the electric vehicle value chain, which has reduced CO2 emissions," commented the automaker's launch of the storage facility.

The constructed storage facility will be used to maintain the balance of the German energy system. The partners of Mercedes-Benz Energy in this project were ENERGIE and The Mobility House. It follows several other large-scale energy storage projects undertaken by Mercedes-Benz Energy. For example, last year the company and partners built a larger energy storage facility in Herrenhausen. Its capacity is 17,4 MWh.

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