Improvised medical vibroacoustic device “Vitafon” is intended for the treatment of bronchitis, sinusitis, tonsillitis, arthritis, ulcers, open wounds, fractures, bruises, hemorrhoids. Acting contact method (with continuously changing the sound frequency) at a particular organ, the apparatus excites mikrovibratsiyu affected (and adjacent to the nidus) of the tissues, activates the healing processes and recovery. A fundamental principle is the same therapeutic effect, as shown by the results of the research is a local increase in capillary blood flow and lymph flow due to reduction of hydrodynamic resistance of blood vessels within the area of vibro-acoustic influence of waves of a certain range.
“VITAFON”
Among the devices designed to destroy high-voltage discharge of mosquitoes, latausha the light bulbs, and relates my development. It does not contain scarce parts, assemble it under the force of even the novice hobbyist, and just a few hours.
For the guys from the club for young technicians Novosibirsk Akademgorodok has long been the rule: the work performed in the groups should be of a socially useful nature, contain elements of novelty and originality. When it was announced the competition “Young technology — agriculture”, butovtsy developed and produced for the collective farms and state farms the number of interesting devices. This measure humidity and temperature, automatic regulators, apparatus for determining the protein content in the wheat grains and the degree of oil contamination in the centrifuge of the tractor. Using an electronic thermometer, for example, it is convenient to measure the temperature of the grain, potatoes, soil. Guys the Steppe school Iskitim district of such thermometers are used for temperature control in potato storage.
The family of adapters, recently appeared a lot of new, specially designed for automatic recording of signals from the telephone line to the household VCR. Part of this apparatus includes, generally, a node of coordination of polarity and level of the input signal, and threshold-switching device.
Since ancient times people admired the music box. Their creation was only very skilled mechanics, who had besides an ear for music. Now the progress of technology made it easier. Electronic box whose schema is shown in figure 1, may collect even the ham is not very high qualifications. But a musical ear is still required.
The proposed remote control system (remote control) is executed in the form of attachment to the radio commercial production. It allows you to control ten different loads with up to eight fixed channels (the first pressing — on, second — off) and two not fixed (the operation is possible only when the button is pressed).
Devices for influencing the so-called biologically active points (BAP) are known to many. Including those created by radio Amateurs. Circuitry underlying some BAT-stimulants, saw light in the pages of “Modeller-designer” (see “modelist-Konstruktor” No. 1 and 3 in 1998). However, to implement them was proposed, as a rule, “miscomputing” database. Well, if to approach from positions of today, when even personal supercomputer are not uncommon?
Commonwealth sports and equipment… When it comes to this topic, we are Olympic records with their fantastic results and sophisticated instruments, able to capture such results.
Pushkin “Ah, summer red, I would love you, if not for the heat, and dust, Yes mosquitoes, Yes flies” not to recall with the advent of the hordes of winged insects that spoil our mood more than heat and humidity. And then remember the promotional video: in the fight with the flying vermin are becoming increasingly prevalent electronic protection. A few behind the effectiveness of chemical pesticides, it is more gentle to the environment, and this is now of the essence.
In Amateur radio practice, there are situations when 9-volt DC source you need to obtain 12, and then a higher output voltage. Bail in such cases can I designed a compact transformerless adapter. Made on the basis of two or three common chips and four transistors, it will allow first to improve the initial voltage of approximately 17 V, and then to output the desired 12 V. And stable.