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Adjustable Regulator Option, High Voltage DC Voltage Regulator, Two Simple Analog Regulators, Bipolar Voltage Regulator, Additional Regulator Thermal Protection, Switching Buck Regulator, Regulator Overload Indicator, Key Voltage Regulator, High Efficiency Linear Voltage Regulators, Low Power Bipolar Regulator, Micro Power Precision Regulator stabilizer, Microcircuit voltage stabilizer: protection unit, Multi-channel voltage stabilizer, Powerful voltage stabilizers with current protection, Low-voltage voltage stabilizer ... all articles of the section >>

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The device for monitoring the water level in the car radiator



Section Car. Electronic devices. The car radiator must contain enough water. If the driver does not notice a significant decrease in water in the radiator in a timely manner, the engine will overheat. The device for monitoring the water level in the radiator (see diagram) has the advantage over similar devices that when it is used, electrolysis does not occur, leading to the gradual destruction of the radiator walls. The use of silicon transistors makes the device less sensitive to significant temperature changes. ... >>

Chokeless voltage converter, 10-15/15-27 volts 3,5 amps



Section Voltage converters, rectifiers, inverters. The circuit of a chokeless pulse voltage converter is shown in fig. 4.69. The circuit provides a voltage conversion of 12 V, a voltage of 15 ... 27 V at a load current of up to 3 ... 3,5 A. The oscillograms shown in fig. 4.70, explain the operation of the converter. The generator on DD1.1, DD1.2 forms a meander with a frequency of about 20 kHz. If the key transistors VT1, VT2 were opened by anti-phase signals from the outputs of the trigger DD2, a through current would flow through the transistors at the moment of switching, and a short circuit of the power source would occur. To eliminate this phenomenon, negative polarity pulses (see Fig. 4.70) are formed so that transient processes in transistors occur alternately and do not coincide in time ... >>

Analog device Vitafon



Section Electronics in medicine. This is a conventional generator that produces a range of frequencies from 60 Hz to 12,5 kHz, assembled on conventional TTL microcircuits. This design could be assembled on both analog elements and PIC controllers, but I simply used parts that had been lying in my desk for a long time without any movement. A signal with a frequency of 50 kHz from the generator D1 goes to the divider D3 and from it a 25 kHz meander goes to counters D5, D6 and a 16 kHz meander to D7, D8. From the outputs of the counters, the signals go to the inputs of the multiplexer D10. The multiplexer switches its channels according to the signals from the counter D9. The 12 Hz signal from the generator D2 goes to D4 ... >>


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ENCYCLOPEDIA OF RADIO ELECTRONICS.
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ENCYCLOPEDIA OF ELECTRICAL ENGINEERING.
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Diagrams and service manuals for household appliances

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Schemes and service manuals for machine tools and electric tools

Schemes and service manuals for machine tools and electric tools

RADIO PARAMETERS

Reference books on radio components and accessories

Reference books on radio components and accessories

 

CONTENT OF BOOKS, MAGAZINES, COLLECTIONS

To base article archive search entered contents of more than 200000 books, magazines and collections:

Automation Library, Electrician's Library, Radioamator's Notebook, To Help the Radio Amateur, HF Magazine, HF and VHF, Kvant, Constructor, Mass Radio Library, Model Designer, Science and Life, Electronics News, New Radio Yearbook, Popular Mechanics, Radio, Radioamator, Radioamator -best, Radio business, Radio design, Radio yearbook, Radio components, Radio designer, Radio amateur, Radio world, Radio circuit, Radio hobby, Repair and service, Electronic equipment repair, Self, Service center, Power electronics, Circuit engineering, Technique - youth, Chemistry and life, EKiS (Electronic components and systems), Electrician, Electronics, Junior Technician, I'm an Electrician, Circuit Cellar magazine, Elektor Electronics magazine, Nuts And Volts magazine (more).

Automation Library Electrician Library Library Quant Electrical Engineering Library Radioamator's notepad Help for a radio amateur Know and be able KV magazine HF and VHF Quantum Constructor Mass radio library Model Designer Science and life Electronics News New Radio Yearbook Popular mechanics Радио Radioamator Radioamator-best radio business radio design radio yearbook Radio components Radio constructor Ham radio Radiomir radio circuit radio hobby Repair and service Repair of electronic equipment To say more about Service center Power electronics Circuitry Technique - Youth Chemistry and Life EKiS (Electronic components and systems) Electrician Electronics Young technician I'm electric

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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

PrivatBank neutralized a group of skimmers 22.01.2012

On January 18, 2012 in Lviv, the security service of PrivatBank stopped the activities of an international group of scammers-skimmers who used overlays on ATMs to steal the personal data of cardholders. According to PrivatBank, the scammers were caught red-handed while removing the lining from the bank's ATM located in Lviv. They turned out to be two citizens of Romania, who were taken to the police. During the search, electronic means for skimming and plastic cards of various Ukrainian and foreign banks were seized from the suspects.

"It is rare for anyone to catch skimmers red-handed, but today we know how to catch them," said Stanislav Krizhanovsky, head of PrivatBank's security service. The task force of security left and detained the swindlers".

According to an investigation conducted by the bank's security service, by installing an overlay on various ATMs in Lviv, fraudsters managed to steal the data of 56 payment cards of customers of various banks. In the course of the analysis of video surveillance materials for the ATM network, the involvement of these persons in other facts of skimming in the Ivano-Frankivsk region was established, the amount of damage for which amounted to UAH 27.

The fraudsters will be prosecuted under Art. 200 of the Criminal Code (“Illegal actions with transfer documents, payment cards and other means of access to bank accounts, equipment for their manufacture”), and the detainees face two to five years in prison, PrivatBank reported.

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News feed of science and technology, new electronics

 

Interesting materials of the Free Technical Library:

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▪ article Refinement of the laboratory power supply. Encyclopedia of radio electronics and electrical engineering


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