Simple electronic push button volume control. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Tone, volume controls
Comments on the article
The controller works similarly to digital volume controllers, it remembers the volume level after the power is turned off, its current consumption (only when the "-" button is pressed) is not more than 0,5 mA.
The BS170 transistor can be replaced with KP501 or KP504. It is advisable to take a capacitor with a low leakage current (105 degrees).
See other articles Section Tone, volume controls.
Read and write useful comments on this article.
<< Back
Latest news of science and technology, new electronics:
Traffic noise delays the growth of chicks
06.05.2024
The sounds that surround us in modern cities are becoming increasingly piercing. However, few people think about how this noise affects the animal world, especially such delicate creatures as chicks that have not yet hatched from their eggs. Recent research is shedding light on this issue, indicating serious consequences for their development and survival. Scientists have found that exposure of zebra diamondback chicks to traffic noise can cause serious disruption to their development. Experiments have shown that noise pollution can significantly delay their hatching, and those chicks that do emerge face a number of health-promoting problems. The researchers also found that the negative effects of noise pollution extend into the adult birds. Reduced chances of reproduction and decreased fertility indicate the long-term effects that traffic noise has on wildlife. The study results highlight the need ... >>
Wireless speaker Samsung Music Frame HW-LS60D
06.05.2024
In the world of modern audio technology, manufacturers strive not only for impeccable sound quality, but also for combining functionality with aesthetics. One of the latest innovative steps in this direction is the new Samsung Music Frame HW-LS60D wireless speaker system, presented at the 2024 World of Samsung event. The Samsung HW-LS60D is more than just a speaker system, it's the art of frame-style sound. The combination of a 6-speaker system with Dolby Atmos support and a stylish photo frame design makes this product the perfect addition to any interior. The new Samsung Music Frame features advanced technologies including Adaptive Audio that delivers clear dialogue at any volume level, and automatic room optimization for rich audio reproduction. With support for Spotify, Tidal Hi-Fi and Bluetooth 5.2 connections, as well as smart assistant integration, this speaker is ready to satisfy your ... >>
A New Way to Control and Manipulate Optical Signals
05.05.2024
The modern world of science and technology is developing rapidly, and every day new methods and technologies appear that open up new prospects for us in various fields. One such innovation is the development by German scientists of a new way to control optical signals, which could lead to significant progress in the field of photonics. Recent research has allowed German scientists to create a tunable waveplate inside a fused silica waveguide. This method, based on the use of a liquid crystal layer, allows one to effectively change the polarization of light passing through a waveguide. This technological breakthrough opens up new prospects for the development of compact and efficient photonic devices capable of processing large volumes of data. The electro-optical control of polarization provided by the new method could provide the basis for a new class of integrated photonic devices. This opens up great opportunities for ... >>
| Random news from the Archive Ultrasonic lenses
01.11.2004
This seems to be a trick of a magician: a disk of transparent material, enclosed in a metal frame, suddenly, while maintaining the plane-parallel sides, turns into a collecting or diverging lens.
The secret of flat lenses developed in one of the laboratories of Triton Systems (USA) lies in ultrasound. Piezoelectric ultrasound emitters are enclosed in a frame around a transparent silicon rubber disc. Passing through the rubber, ultrasound waves either slightly push the molecules apart, or compress them, making the material either more rarefied or denser. Dense areas refract light more.
The frequency and phase of the emitters in the frame on the sides of the disk can be chosen such that due to the interference of waves in the center of the disk, a stable region with a reduced density is formed, and hence with a reduced refractive index of light. A flat transparent disk turns into a diverging lens.
So far, the successes of researchers are small - only the central zone with a diameter of several millimeters changes its optical properties. But in the future, heavy and long lenses with a variable focal length can be replaced by a flat transparent plate controlled by electronics.
|
Other interesting news:
▪ Learning errors
▪ Power plant on a kite
▪ Drunk driver protection car
▪ How many dinosaurs have not yet been discovered
▪ Astell&Kern AK UW100 TWS Wireless Headphones
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ section of the site Labor protection. Selection of articles
▪ article Natural and technogenic emergencies, their possible consequences. Basics of safe life
▪ article Which plant is able to remember the type of exposure to external stimuli? Detailed answer
▪ article Work on three-knife paper-cutting machines. Standard instruction on labor protection
▪ article Protection device for the headlight cleaner from burnout. Encyclopedia of radio electronics and electrical engineering
▪ article At the command of the pike, at your will. Focus Secret
Leave your comment on this article:
All languages of this page
Home page | Library | Articles | Website map | Site Reviews
www.diagram.com.ua
2000-2024
Arabic
Bengali
Chinese
English
French
German
Hebrew
Hindi
Italian
Japanese
Korean
Malay
Polish
Portuguese
Spanish
Turkish
Ukrainian
Vietnamese