Mixers, frequency converters. Schemes, articles of the Free Technical Library

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Mixers, frequency converters. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Mixers, frequency converters

We recommend reading in our Free Technical Library:

Modernization of the acoustic system 75AC-001. Part 2

Section Acoustic systems. In the previous article, we started talking about how you can independently refine domestic speaker systems in accordance with audiophile ideas about sound quality. The object for the experiment was the popular Soviet speakers 75AC-001, which still have a high reputation even among advanced listeners. As it turned out, after a relatively simple and not very burdensome modernization for the family budget, they can sound very good. Judging by the letters from readers who still come to the editorial office, the topic of finalizing the columns interested many of them, and therefore we decided to return to this issue again. ... >>

Introduction to digital electronics

Section Beginner radio amateur. Any symbol of information in digital devices is encoded in binary code, so signals can only take two values: high or low voltage level, the presence or absence of a voltage pulse, etc. A prerequisite for this is the possibility of confident recognition by elements of digital circuits of two signal values, corresponding to the symbols 0 and 1, in conditions of changing ambient temperature, voltage of the power supply, the impact of other destabilizing factors ... >>

The principle of operation of the electronic meter

Section Electric meters. To calculate the electrical energy consumed over a certain period of time, it is necessary to integrate the instantaneous values of active power over time. For a sinusoidal signal, the power is equal to the product of the voltage and current in the network at a given time. Any electric energy meter works on this principle. On fig. 1 shows a block diagram of an electromechanical meter ... >>

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Articles on mixers, frequency converters

Articles on mixers, frequency converters; schemes of mixers, frequency converters; descriptions of mixers, frequency converters: 10 articles

All articles on amateur radio components

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

Chips for LCD control with XGA and SXGA formats 23.03.2003

ST MICROELECTRONICS introduces the first fully integrated ICs for driving XGA and SXGA LCDs of the ADE3700X/3700XT/3700SX types.

They include a 9-bit ADC, a display controller, a programmable time controller, and other devices. Microcircuits are produced in the PQFP-128 package.

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