Free books, magazines, collections published in 1999

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FREE TECH LIBRARY
Content of books and magazines / Year 1999

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1000 years of European military history. Is the end in sight?

100 watt PA at 144 MHz

10-watt single-cycle on 6P45S

10-band graphic equalizer

12V out of 24 with four parts

135 years of the Central Polytechnic Library

20-watt ULF on accessible elements with buildup of the output stage through the power supply circuit of the op-amp

3-USCT - sixteen programs and more

3-frequency keyed oscillator

40-watt KB PA on IRF510

40-watt tube two-stroke ULF

45x45 - universal module for a variety of designs (tower for mobile children)

50 MHz

5П19ТМ-20-4, 5П19ТМ-20-6, 5П19ТМ-20-8, 5П19А-2,5-1, 5П19Б-1-4, 5П19А1, 5П19Б1, 5П20А-2,5-1, 5П20А-5-0,6, 5П20Б-1-4,5П20А1, 5П20Б1, 5П36ТМ-10-6, 5П36ТМ-10-8, 5П36ТМ-20-6, 5П36ТМ-20-8

5П19ТС-1-4, 5П19ТС1-1-4, 5П19ТС-1-6, 5П19ТС-1-8, 5П19ТС-3-4, 5П19ТС-3-6, 5П19ТС-3-8, 5П19Т1, 5П19ТМ-1-4, 5П19ТМ-1-6, 5П19ТМ-1-8, 5П19ТМ-3-4, 5П19ТМ-3-6, 5П19ТМ-3-8, 5П19ТМ-10-4, 5П19ТМ-10-6, 5П19ТМ-10-8

5П40А-2,5-1, 5П40Б-1-4

70-watt transistorized ULF with inductive phase correction

8-watt UZCH on the TDA2030 chip

8-element wave channel at 900 MHz to increase the communication range in the GSM system

AM radio station for CB

AM, FM, SSB Civil Band Car Radio Dragon SS485

AM/FM radio control system

AV showcase. CD player ROTEL RCD-971

CD-ROM drive as an audio CD player

DX-CLUSTER - RTTY BEACON

Fuzz prefix for electric guitar

Hi-Fi for 100 rubles?

Hi-Fi preamplifier for magnetic pickup

Hi-Fi UMZCH

High-end low-voltage battery-powered tube vinyl corrector

High-end tone control

High-end amplifier from affordable parts

HP LogicDart Handheld Multifunction Logic Probe

III International Astronomy Olympiad

ISO - infrared space observatory

IV International Conference in memory of S.N. Bernstein

Kenwood TS-570D - digging deeper

LXII Moscow Mathematical Olympiad

PIN diodes in attenuators and switches

QRP-CW transmitter at 7 MHz

QRP-CW transmitter on one digital chip

QRPVM for KB

QSL managers

SSB modulator

TDA with current feedback

TV controller to control portable TVs

V Visegrad Conference of Young Scientists

XXI century - the century of flax

[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] [29] [30] [31] [32] [33] [34] [35] [36] [37] [38] [39] [40] [41] [42] [43] [44] [45] [46] [47] [48] [49] [50] [51] [52] [53] [54] [55] [56] [57] [58] [59] [60] [61] [62]

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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

Electronic map of pastures of Kyrgyzstan 18.01.2014

Under the Department of Pastures of the Ministry of Agriculture and Land Reclamation of Kyrgyzstan, a GIS laboratory has been created, the main task of which will be the introduction of geographic information systems and technologies into the work of the pasture economy of the republic.

At the first stage, the GIS laboratory will create an electronic map of the country's pastures. After the creation of the map, training will also be organized for specialists in working with electronic maps and the GPS system.

News feed of science and technology, new electronics

Interesting materials of the Free Technical Library:

▪ section of the site Instructions for use. Article selection

▪ An article by Anna de Stael. Famous aphorisms

▪ article When was it fashionable in zoos to show blacks along with animals? Detailed answer

▪ article Working with a cash register. Standard instruction on labor protection

▪ article Monoblock car amplifier based on the TDA7294 chip. Encyclopedia of radio electronics and electrical engineering

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