Free books, magazines, collections published in 1969

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Content of books and magazines / Year 1969

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200 circuits on lamps and transistors. Zagorovsky K.O., 1969

Self-oscillating amplifiers in control and automation devices. Pavlenko V.A., 1969

Crusher automation. Sitkovsky A.Ya., Rabinovich G.A., 1969

Automation in sports games

Automatic plotters TsVM. Gilenko V.T., Melanchenko L.A., Nemkov V.V., 1969

Automatic temperature difference measurement. Kozhukh V.Ya., 1969

Hitchhiking for tape recorders on photodiodes

Antennas. Rothammel K., 1969

Craneless installation of synchronous compensators. Baryshev B.V., 1969

Transformerless low frequency transistor amplifiers. Sinelnikov A.X., 1969

Blocks and nodes of amateur TV. Piltakyan A.M., 1969

High quality amplifier

Sensors of the composition and properties of matter. Combined methods. Arutyunov O.S., Zeimakh B.M., 1969

Memory devices on multi-hole ferrite plates. Lashevsky R.A., 1969

Foreign transistors of wide application. Directory. Leontiev V.F., 1969

Protection of three-phase motors

Star, triangle, zigzag. Kaminsky E.A., 1969

Radio Noise Figure Measurement

Measurement of surface temperature of solids. Kulakov M.V., Makarov B.I., 1969

Measurements and devices in amateur radio practice. Gribanov Yu.I., 1969

Impulse and relay servo direct current drives with semiconductor amplifiers., 1968

Impulse methods of regulation of direct current circuits with the help of thyristors. Kraitsberg M.I., Shikut E.V., 1969

Pocket radio Vesna-2

Quasi-optimal systems of automatic control in terms of speed. Dunaev V.I., 1970

Time slicing when measuring control. Efimov V.M., 1969

Push button switch for household tape recorder

Switching devices of automatic control systems. Dolgov V.A., Gonestas E.Yu., 1969

Complete switchgears with a voltage of 3-35 kV. Doroshev K.I., 1969

Complete boards and panels. Katz A.L., 1969

Capacitive converters in automation and control systems. Baranov L.A., 1969

Crane trolleys. Ligerman I.I., 1969

Beginner radio amateur laboratory. Vasiliev V.A., Venevtsev M.K., 1969

Logic circuits on semiconductors. Stopsky S.B., 1969

Amateur generator of standard signals. Gluzman I.A., 1969

Amateur TV with kinescope 59LK2B. Bortnovsky G.A., 1969

Magnetoelectric guitar adapter

Mixers. Ganzburg M.D., 1969

Powerful stabilized power supply

Reliability of amateur radio equipment. Kuznetsov A.S., 1969

Feedback in transistor amplifiers. Popov P.A., 1969

Maintenance of generators. Chernev K.K., 1969

Optoelectronic devices. Polyanin O.V., Ushakov E.V., 1969

Converting tube receivers to transistor ones. Venevtsev M.K., 1969

TV refurbishment. Sotnikov S.K., 1969

Rewinding of rotors of turbogenerators using glass insulation. Streletsky I.S., 1969

Portable transistor radio

Rotary inductosyn. Bychatin D.A., Goldman I.Ya., 1969

Improving the reliability of the line scanner

Improving the reliability of oil circuit breakers. Apoltsev Yu.A., 1969

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Breakthrough in the efficiency of organic semiconductors 19.01.2019

Swedish researchers at Chalmers University of Technology have succeeded in doubling the efficiency of organic semiconductors at once, paving the way for wearable electronics and more efficient solar panels. Thanks to the new approach, many of the technologies based on organic semiconductors will finally become commercially viable.

The development of organic semiconductors has accelerated significantly in recent decades. One example of the application of this technology is the OLED displays of modern smartphones. However, the efficiency of organic semiconductors is still low. The reason is the imperfection of doping - the addition of impurities in order to increase electrical conductivity.

The additive molecule receives an electron from the organic semiconductor, which increases its electrical conductivity. The more electrons a substance can donate, the higher its conductivity will be. However, modern organic semiconductors are capable of exchanging only one electron with each impurity molecule.

Scientists have developed a technology for double doping, in which not one, but two electrons are transferred to each molecule of the additive. This will make organic semiconductors twice as efficient. Double doping will make many organic semiconductor technologies commercially viable. These are, for example, flexible electronics, bioelectronics and thermoelectric devices.

Another discovery in the field of organic electronics was made by researchers from the Vienna Technical University. After four years of work, they synthesized for the first time a polymer of the S-PPV type, which was previously known only in theory and was considered very promising. Compared to existing analogues, it is more stable and conducts electricity better.

The new polymer will be especially useful in the production of LEDs and solar cells. In addition, non-toxicity and biocompatibility will make S-PPV an ideal candidate for medical use.

Flexible devices will become one of the main trends in the development of electronics in 2019. In addition, wireless chargers, 5G communications and smart headphones will become widespread.

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