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Grounding and grounding. Schemes, articles, descriptions

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Grounding and grounding

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Economical Geiger Counter Power Supply

Section Dosimeters. In autonomous devices for continuous radiation monitoring using Geiger counters as radiation sensors, the main energy consumer is a device that converts the low voltage of the device's power source into a voltage of 360 ... 440 V, corresponding to the plateau of the counting characteristic of a halogen Geiger counter (see Appendix 4). A schematic diagram of an energy-efficient voltage converter is shown in fig. 80 ... >>

Flashlight on 555 series timer

Section Lighting. I offer a flashlight with white LEDs on a 555 series analog timer chip known to radio amateurs. It can be used to illuminate mounting in an inconvenient place, as a pocket or bicycle lamp, etc. The generator is the 555 timer, the domestic analogue of which is the KR1006VI1 microcircuit. The generator frequency is about 100 Hz. At the output of the timer, a transistor switch VT1 is turned on, in the collector of which 3 white LEDs of the L-53PWC type from Kingbright are installed ... >>

Microcircuits universal analog programmable: choice of elementary functional units

Section Reference materials. It is difficult to overestimate the importance of reprogrammable logic integrated circuits (FPGAs) in the synthesis of logic systems. The comprehensive development of the element base and computer-aided design systems makes it possible to implement complex logical systems in an unprecedentedly short time and with minimal material costs. Therefore, the desire to achieve similar results in the design and production of analog systems is understandable. However, many attempts made in this direction have not yet brought the expected results, and programmable analog ICs (PAIS) and matrix analog ICs (MABIS) have not become universal ... >>

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Articles on grounding and grounding

Articles on grounding and grounding; descriptions of grounding and grounding: 20 articles



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Regulatory documentation for an electrician



Latest news of science and technology, new electronics:

Sound-absorbing silk 17.05.2024

In a world where noise is becoming increasingly intrusive, the emergence of innovative materials that can reduce its impact is of great interest. MIT researchers have unveiled a new sound-absorbing silk fabric that promises to revolutionize quiet spaces. The Massachusetts Institute of Technology (MIT) has made significant breakthroughs in the field of sound absorption. Researchers have developed a special silk fabric that can effectively absorb sound and create cozy, quiet environments. The fabric, thinner than a human hair, contains a unique vibrating fiber that is activated when voltage is applied to it. This feature allows the fabric to be used to suppress sound waves in two different ways. The first method uses fabric vibrations to generate sound waves that cover and cancel out unwanted noise, similar to noise-canceling headphones. This p ... >>

High Energy Density Capacitor 17.05.2024

Energy plays a key role in many aspects of modern life, and the ever-increasing demand for efficient and fast-charging power sources is driving innovation. Researchers at the McKelvey School of Engineering at Washington University in St. Louis have taken a significant step forward with a high-energy-density capacitor that promises to revolutionize the world of energy. A team of scientists from the McKelvey School of Engineering at Washington University in St. Louis presented the results of their latest research on heterogeneous thin-film structures for capacitors. Researchers, working with ferroelectrics, inadvertently created a capacitor with an amazing energy density that is 19 times higher than that of conventional elements. This breakthrough opens up new prospects for the development of fast-charging batteries, which are so necessary in the modern world. Capacitors play a key role in various devices, providing stable ... >>

Causes of conflicts between brothers and sisters 16.05.2024

Family relationships are often complex and multi-layered, and conflicts between siblings are no exception. Research in this area can help us understand what factors underlie these conflicts and why they occur so frequently. Let's look at some of the findings from psychologists at Arizona State University. American psychologists from Arizona State University conducted a study aimed at identifying the causes of conflicts between brothers and sisters. They found that different forms of violence, whether physical or verbal, did not depend on the gender of the siblings. This means that both girls and boys can exhibit aggressive behavior towards their loved ones. Other studies have shown that conflict between siblings often persists into adulthood, even as contact decreases. This indicates that people often follow established patterns of behavior formed in childhood. It was also found that, despite ... >>

Random news from the Archive

prominence model 03.08.2000

A model of solar prominences has been implemented at the Department of Applied Physics of the California Institute of Technology (USA).

Prominences are plasma - a hot gas of free electrons and positive ions. For a long time it was not known why these emissions of the solar atmosphere take such a variety of forms. It is now believed that the shape, size and speed of prominences (and they sometimes reach the Earth) are determined by the interaction of magnetic fields and electric currents in a conducting plasma.

Physicists have simulated the development of a prominence by passing a current of about 6000 volts and a force of up to 60 kiloamperes through the plasma in a vacuum chamber, simultaneously applying a magnetic field that is several thousand times more intense than the Earth's magnetic field.

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