Lighting. Control schemes. Schemes, articles of the Free Technical Library

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Lighting. Control schemes. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Lighting. Control schemes

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Subwoofer BANDPASS 75GDN-1-4

Section Acoustic systems. The subwoofer enclosure is made of chipboard and has an optimal shape for installation directly behind the rear seat (close to it). Of course, if the design of the car body allows it, as, for example, in almost all Japanese cars, station wagons, hatchbacks, Trade winds after 88 onwards, any Audi 100. In different cars, the seats are installed at different angles, and accordingly, each will have its own angle and wall sizes will differ. But not by much: the dimensions of the speaker are such that the edges of the speaker are very close to the walls of the subwoofer and therefore the dimensions of the walls will not differ much. The main thing is that the volumes of chambers 1 and 1 are maintained with high accuracy. V2=1l, V16=2l (with phase inverter). The following are the formulas by which you need to calculate the dimensions based on a given volume (S is the area of \u11b\u30bour trapezoid, h is the height, approximately XNUMX cm) ... >>

Packet communication: AX.25 protocol

Data transfer section. When carrying out packet communication on amateur radio between two or more correspondents, information is exchanged in accordance with some established order, which is called the exchange protocol. In this case, the AX.25 protocol is used, which is a version of the X.25 protocol revised specifically for amateur radio purposes. Exchange protocols contain seven levels. The entire logic of the procedure for working over a radio channel is described in the second level. In practice, it is implemented, as a rule, by a special packet communication controller (TNC), which is located between the computer and the transceiver ... >>

Power features of white LEDs

Section LEDs. Let us consider in more detail the power supply features of white LEDs. As you know, the LED has a nonlinear current-voltage characteristic with a characteristic heel in the initial section (Fig. 4.21). As we can see, the LED starts to glow if a voltage of more than 2,7 V is applied to it. Attention! When the threshold voltage is exceeded (above 3 V), the current through the LED begins to grow rapidly and here it is required to limit the current, stabilize it at a certain level ... >>

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Articles on lighting control schemes

Articles on lighting control schemes; schemes of lighting devices; descriptions of lighting devices: 226 articles

All articles for an electrician

Regulatory documentation for an electrician

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. ... >>

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Amphibious bus 11.09.2010

On the streets of Glasgow (Great Britain) a bus is being tested that can float on the river. With 55 passengers on board, it develops a speed of up to 95 km/h on land, and up to 15 km/h on water with the help of two jet propulsion.

If the trials are successful, the Dutch-made bus could replace the ferry linking two parts of the city separated by the Clyde River.

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