Car security and alarm. Schemes, articles of the Free Technical Library

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Car security and alarm. Schemes, articles, descriptions

Free library / Schemes of radio-electronic and electrical devices

Car security and alarm

We recommend reading in our Free Technical Library:

Power supply for the ionizer

Section Power supplies. Chizhevsky's chandelier has been repeatedly described in various publications. Your attention is invited to an effective power supply circuit for the Chizhevsky chandelier, which is shown in fig. 4.62. The T1 transformer is made from an old TVS-110 line transformer. The main advantage of this ionizer power supply is the use of the TV multiplier UN9/27 ... >>

IC FSK modem

Data transfer section. Currently, there are a number of special modem chips: XR-2206/2211, AM-7910/7911, TCM-3105... Their use simplifies the circuit and greatly facilitates configuration. But in any case, knowledge of the functional diagram of the microcircuit will be useful. The following is a description of the TCM-3105 chip used in the VHF VHF FSK modem. The material is based on the technical description of the manufacturer ... >>

capacitive relay

Section Clocks, timers, relays, load switches. Security alarm,. switches for household appliances, control sensors on the production line - these are just a small part of the scope of this capacitive relay. It can be used, for example, in the simplest household automation: sat in an armchair - a floor lamp turned on, music started playing, a fan started, etc. In a word, the scope of this relay will be prompted by fantasy, the creative thought of the radio amateurs themselves ... >>

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Articles on car security and signaling

Articles on the protection and signaling of the car; car alarm schemes; descriptions of car alarms: 63 articles

All articles on security devices

Latest news of science and technology, new electronics:

Solidification of bulk substances 30.04.2024

There are quite a few mysteries in the world of science, and one of them is the strange behavior of bulk materials. They may behave like a solid but suddenly turn into a flowing liquid. This phenomenon has attracted the attention of many researchers, and we may finally be getting closer to solving this mystery. Imagine sand in an hourglass. It usually flows freely, but in some cases its particles begin to get stuck, turning from a liquid to a solid. This transition has important implications for many areas, from drug production to construction. Researchers from the USA have attempted to describe this phenomenon and come closer to understanding it. In the study, the scientists conducted simulations in the laboratory using data from bags of polystyrene beads. They found that the vibrations within these sets had specific frequencies, meaning that only certain types of vibrations could travel through the material. Received ... >>

Implanted brain stimulator 30.04.2024

In recent years, scientific research in the field of neurotechnology has made enormous progress, opening new horizons for the treatment of various psychiatric and neurological disorders. One of the significant achievements was the creation of the smallest implanted brain stimulator, presented by a laboratory at Rice University. Called Digitally Programmable Over-brain Therapeutic (DOT), this innovative device promises to revolutionize treatments by providing more autonomy and accessibility to patients. The implant, developed in collaboration with Motif Neurotech and clinicians, introduces an innovative approach to brain stimulation. It is powered through an external transmitter using magnetoelectric power transfer, eliminating the need for wires and large batteries typical of existing technologies. This makes the procedure less invasive and provides more opportunities to improve patients' quality of life. In addition to its use in treatment, resist ... >>

The perception of time depends on what one is looking at 29.04.2024

Research in the field of the psychology of time continues to surprise us with its results. Recent discoveries by scientists from George Mason University (USA) turned out to be quite remarkable: they discovered that what we look at can greatly influence our sense of time. During the experiment, 52 participants took a series of tests, estimating the duration of viewing various images. The results were surprising: the size and detail of the images had a significant impact on the perception of time. Larger, less cluttered scenes created the illusion of time slowing down, while smaller, busier images gave the feeling of time speeding up. Researchers suggest that visual clutter or detail overload can make it difficult to perceive the world around us, which in turn can lead to faster perception of time. Thus, it was shown that our perception of time is closely related to what we look at. Larger and smaller ... >>

Random news from the Archive

Silicon LEDs glow 100 times brighter 20.01.2003

ST MICROELECTRONICS Corporation has developed a new technology that increases the light output of silicon LEDs by 100 times, making them competitive with traditional gallium arsenide LEDs.

This will allow both optical and electronic circuits to be combined on a single chip, which has not been possible until now. To achieve this, the researchers implanted rare earth metals such as cerium, erbium and terbium into the silicon oxide layer. As a result, silicon oxide nanocrystals 1...2 nm in size were formed. The color of the emission depends on the selected rare earth metal.

With the addition of cerium, the wavelength is 460 nm (blue color of the glow), with the addition of terbium - 545 mm (green color of the glow), with the addition of erbium - 1540 nm (infrared).

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