Television and video equipment. Schemes, articles of the Free Technical Library

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Television, video equipment. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Television, video equipment

We recommend reading in our Free Technical Library:

Antenna Delta from 10 to 40 meters

HF Antenna Section. During an on-air conversation with Mike (G4HOL), I learned about his compromise antenna. His story was written almost word for word. But, first of all, for a better understanding, I will give a picture illustrating what has been said. Comment G4HOL: The perimeter of the antenna, as seen in the figure is 43,13 meters. The location above the ground is horizontal. On the 40 m band, it works at a large angle to the horizon. As the frequency increases, the radiation angle decreases and the gain increases. Antenna non-resonant ... >>

Three-phase electric motor: circuit breaker

Section Protection of equipment from emergency operation of the network. Protecting an electric motor or other three-phase load from failure with low-quality power supply is a very urgent task, especially in rural areas. The low quality of the supplied electricity is manifested in the asymmetry of the effective voltage values in the phases of the three-phase network and even in the complete absence of voltage in one of the phases. This can lead to thermal overload of the motor and burnout of its stator windings. The proposed device will automatically disconnect the load from the network in the event of a dangerous situation. ... >>

Load equivalent for UMZCH

Section Transistor power amplifiers. Any newly assembled or refurbished audio power amplifier needs to be tested for performance, reliability, and performance. Debugging amplifiers both at the most fruitful night time for men, and at any other, no less fruitful, with speaker systems connected to them, is a considerable problem. To understand the magnitude of these inconveniences that you can be the source of, remember your own annoyance that you experience if someone, while washing or repairing a car parked next to your windows, turns on the radio at full power, believing that his musical preferences will deliver limitless aesthetic pleasure by the will of circumstances to people who are nearby. If 100 years ago a crowd of idle people gathered on a singing gramophone put out by a gentleman on the street, then at present the situation has changed radically, and people who demonstrate their musical tastes to the whole district can be called at least ill-bred ... >>

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Articles on television and video equipment

Articles on television and video technology; schemes of television and video devices; descriptions of television and video devices: 188 articles

See also: Articles on television antennas

Articles on television antennas; schemes of television antennas; descriptions of television antennas: 56 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

Internet from Lufthansa 01.07.2016

In October 2016, the first Lufthansa aircraft will take off on short and medium haul flights with broadband internet access on board. All Lufthansa's A2018 family aircraft are expected to be equipped with this innovative technology by mid-320.

One of the key milestones has already been achieved: Lufthansa Technik became the first aircraft operating, maintenance and repair company in Europe to receive a supplementary certificate (STC) from the European Aviation Safety Agency (EASA) for installing Ka-band antennas on Airbus A320 family aircraft, then available on the A319, A320 and A321 models. The presence of the STC certificate confirms that the modification of the aircraft (hardware or software) is in accordance with the design specifications provided by EASA. These changes will not affect the continued airworthiness of the aircraft.

The first aircraft was equipped with this technology in June. In the coming weeks, the functionality and stability of the systems installed on board will be tested. With a high degree of probability, Lufthansa passengers will be able to use the new Internet service from October, later this will be implemented with other airlines that are part of the Lufthansa Group.

The service, which will be provided to passengers by Lufthansa and its technology partner, Inmarsat, is based on state-of-the-art broadband satellite technology (Ka-band) and provides full reliable coverage on short and medium haul routes via Inmarsat's Global Xpress satellite network. Passengers will have access to the Internet via WiFi using their mobile devices.

In addition to standard access to mail or work in browsers, passengers will be able to use more complex applications or watch streaming video. Later, the possibility of sending sms-messages or transferring data from their mobile phones will be implemented.

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