Infrared detector. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Indicators, detectors, metal detectors
Comments on the article
The presented detector circuit is a simple light relay or a detector that responds to the infrared radiation of the LED D1. The main application of the device is control systems. In the absence of radiation from diode D1 to phototransistor Q1, relay K1 is in a normally open state. There are various design options for the device.
A variant is possible when the phototransistor Q1 is triggered by the reflected beam (a mirror can be used as a reflector) of the infrared D1. The advantage of such a relay is the absence of radiation visible to the eye. The sensitivity of the device is determined by the parameters D1, Q1, R2 and the design of the device.
Publication: cxem.net
See other articles Section Indicators, detectors, metal detectors.
Read and write useful comments on this article.
<< Back
Latest news of science and technology, new electronics:
Machine for thinning flowers in gardens
02.05.2024
In modern agriculture, technological progress is developing aimed at increasing the efficiency of plant care processes. The innovative Florix flower thinning machine was presented in Italy, designed to optimize the harvesting stage. This tool is equipped with mobile arms, allowing it to be easily adapted to the needs of the garden. The operator can adjust the speed of the thin wires by controlling them from the tractor cab using a joystick. This approach significantly increases the efficiency of the flower thinning process, providing the possibility of individual adjustment to the specific conditions of the garden, as well as the variety and type of fruit grown in it. After testing the Florix machine for two years on various types of fruit, the results were very encouraging. Farmers such as Filiberto Montanari, who has used a Florix machine for several years, have reported a significant reduction in the time and labor required to thin flowers.
... >>
Advanced Infrared Microscope
02.05.2024
Microscopes play an important role in scientific research, allowing scientists to delve into structures and processes invisible to the eye. However, various microscopy methods have their limitations, and among them was the limitation of resolution when using the infrared range. But the latest achievements of Japanese researchers from the University of Tokyo open up new prospects for studying the microworld. Scientists from the University of Tokyo have unveiled a new microscope that will revolutionize the capabilities of infrared microscopy. This advanced instrument allows you to see the internal structures of living bacteria with amazing clarity on the nanometer scale. Typically, mid-infrared microscopes are limited by low resolution, but the latest development from Japanese researchers overcomes these limitations. According to scientists, the developed microscope allows creating images with a resolution of up to 120 nanometers, which is 30 times higher than the resolution of traditional microscopes. ... >>
Air trap for insects
01.05.2024
Agriculture is one of the key sectors of the economy, and pest control is an integral part of this process. A team of scientists from the Indian Council of Agricultural Research-Central Potato Research Institute (ICAR-CPRI), Shimla, has come up with an innovative solution to this problem - a wind-powered insect air trap. This device addresses the shortcomings of traditional pest control methods by providing real-time insect population data. The trap is powered entirely by wind energy, making it an environmentally friendly solution that requires no power. Its unique design allows monitoring of both harmful and beneficial insects, providing a complete overview of the population in any agricultural area. “By assessing target pests at the right time, we can take necessary measures to control both pests and diseases,” says Kapil ... >>
| Random news from the Archive graphene lamps
02.04.2015
Lighting lamps made using graphene will soon go on sale in the UK. According to the developers, this is the first commercial application of a product with graphene.
Graphene lamps are expected to be slightly cheaper than LED lamps, which cost up to £15 in the UK. The light bulb with graphene-coated LED filament was created by Graphene Lighting with financial support from Canadian investors. One of the leaders of the company is the Vice-Chancellor of the University of Manchester, Professor Colin Bailey. Scientists of this university, physicists of Russian origin Andrey Geim and Konstantin Novoselov discovered graphene in 2004. For this discovery in 2010, physicists were awarded the Nobel Prize in Physics, and in 2011 they were awarded a knighthood by the Queen of Great Britain.
On March 20, the National Graphene Institute at the University of Manchester was opened, for the creation of which the UK government allocated 38 million pounds.
Graphene is a modification of a carbon compound. Thanks to its use, it is expected that the new lamps will have a longer service life, as well as about 10% less energy consumption.
The scope of graphene, which is stronger than steel, can be very wide. More than 35 companies around the world are working with the University of Manchester on projects using graphene. Graphene is already used as a component in the production of tennis rackets and skis. In the future, with its help, it is planned to increase the strength of aircraft frames, as well as to launch the production of more durable and lighter cars.
|
Other interesting news:
▪ Optimal combination of crops and solar panels
▪ Evolution already takes into account urbanization
▪ Samsung 3-bit NAND Solid State Drives
▪ Tablet Samsung Galaxy Tab 7.7
▪ Smart pillow
News feed of science and technology, new electronics
Interesting materials of the Free Technical Library:
▪ site section Digital technology. Article selection
▪ article Pip on the tongue. Popular expression
▪ article Who lost the chance to become the leader of the state, wanting to visit Disneyland? Detailed answer
▪ article Mallow forest. Legends, cultivation, methods of application
▪ article Stationery inks, inks, paints. Simple recipes and tips
▪ article Transmitting sound over the IR channel. Encyclopedia of radio electronics and electrical engineering
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