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Power regulators, thermometers, temperature stabilizers. Schemes, articles, descriptions

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Power regulators, thermometers, heat stabilizers

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Demonstration ultrasonic unit



Section Consumer Electronics. The article describes the design of the simplest ultrasonic setup designed to demonstrate experiments with ultrasound. The installation consists of a generator of ultrasonic vibrations, an emitter, a focusing device and several auxiliary devices, which make it possible to demonstrate various experiments that explain the properties and methods of using ultrasonic vibrations. Using the simplest ultrasonic setup, one can show the propagation of ultrasound in various media, the reflection and refraction of ultrasound at the boundary of two media, and the absorption of ultrasound in various substances. In addition, it is possible to show the production of oil emulsions, the cleaning of contaminated parts, ultrasonic welding, ultrasonic liquid fountain, the biological effect of ultrasonic vibrations. ... >>

Simple frequency counter



Section Beginner radio amateur. On the basis of only one K155LAZ microcircuit, using all its logical elements, it is possible to build a relatively simple device capable of measuring the frequency of an alternating voltage from about 20 Hz to 20 kHz. The input element of such a measuring device is a Schmitt trigger - a device that converts a sinusoidal alternating voltage supplied to its input into rectangular pulses of the same frequency. That is, it converts sinusoidal pulses with a gentle rise and fall to rectangular pulses with a steep rise and fall. The Schmitt trigger fires at a certain amplitude of the input signal. If it is less than the threshold value, there will be no pulse signal at the trigger output. ... >>

Quartz Super Oscillator (Super VXO)



Section Nodes of amateur radio equipment. Generators, heterodynes. The proposed supergenerator differs from conventional quartz oscillators by using, instead of one, two identical quartz resonators connected in parallel. This inclusion allows the generator frequency to be adjusted within much larger limits than single-quartz circuits. So, according to my experiments, for resonators with a frequency of 10,15 MHz this range is about 40 kHz, and for 13 MHz quartz it is about 90 kHz (!) ... >>

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Articles on power regulators, thermometers, heat stabilizers

Articles on power regulators, thermometers, heat stabilizers; schemes of power regulators, thermometers, heat stabilizers; descriptions of power regulators, thermometers, heat stabilizers: 136 articles

 


 

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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

Greenland ice is melting fast 28.07.2017

Scientists are concerned about the rapid melting of ice in Greenland. The reason for this is not only global warming, but also the accumulation of algae, which began to rise to the surface.

The white area of ​​the glaciers reflects light, thus eliminating the melting of ice, but due to the appearance of algae on the surface, the reflective effect may not be fully effective, experts say.

The more vegetation there is on the surface, the faster the ice will melt. Before the advent of underwater plants, the sea level rose by 1 mm per year due to global warming. Scientists suggest that the rate of ice disappearance may increase, which cannot but excite the entire scientific world.

The problem of the rapid melting of ice in Greenland has been dealt with for a long time. Various hypotheses have been put forward related to the cause of the destruction of centuries-old ice, including: the actions of underwater volcanoes, greenhouse gas emissions, and even the intervention of an alien force.

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