Radio control equipment. Schemes, articles of the Free Technical Library

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Radio control equipment. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Radio control equipment

We recommend reading in our Free Technical Library:

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) ... >>

High speed RC-232 interface with opto-isolator

Section for radio amateur-designer. When signals from an isolated source are fed to a receiver powered by a different voltage, coupling circuits with low distortion and good noise immunity become necessary. Unfortunately, such schemes reduce the data transfer rate. True, if the MCT232 opto-isolator from General Instrument with two phototransistors is used to isolate the RS-66 interface, then you can still work at a relatively high speed - 9600 bps ... >>

Two-transistor crystal oscillator

Section Nodes of amateur radio equipment. Generators, heterodynes. The generator (see figure) can be useful when setting up various AM and FM amateur receivers. It consists of quartz and low-frequency oscillators, made respectively on transistors T2 and T1. The low frequency signal through the transformer Tr1 affects the high frequency signal. When using quartz at a frequency of 8 MHz, the modulated signal is well audible at the eighteenth harmonic (144 MHz). The type of modulation in this case is mixed - AM and FM. The signal frequency of the modulating oscillator is about 1 kHz. The resistance of the primary winding of the transformer is 300-500 ohms, and the secondary - 2,5-8 ohms. Choke Dr1 wound on a resistor with a resistance of 100 ohms ... >>

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Articles on radio control equipment

Articles on radio control equipment; schemes of radio control equipment; descriptions of radio control equipment: 26 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

3D Vision: second version 21.12.2011

NVIDIA delighted fans of 3D video by presenting its new developments in the field of stereoscopic imaging. Nvidia 3D Vision 2 is the name of a new software and hardware system for viewing stereo images on a PC screen.

Its main differences from the first generation model are improved performance and a redesigned active shutter glasses. The size of the eyepieces has increased by about 20%, which significantly expands the field of view for users. Their closed design made it possible to almost completely get rid of side flares. NVIDIA engineers also worked on optimizing the algorithm for switching between the LCD shutters of the right and left eyepieces.

In this way, the open time of both shutters has been reduced to a minimum, resulting in reduced flickering. Also noteworthy is the introduction of NVIDIA 3D LightBoost technology, which will now be mandatory for all NVIDIA 3D Vision 2 certified monitors.

When the display is switched to stereoscopic mode, the brightness of the screen is greatly increased to compensate for the loss of brightness when light passes through the glasses.

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