سلام
این مدار ساده دفع کننده پشه است . به زبان اصلی
Mosquito Repeller on a chip
این مدار ساده دفع کننده پشه است . به زبان اصلی
Mosquito Repeller on a chip
With the arrival of summer pleasure enjoy the beautiful weather while in the courtyard of the country house, cottage or in the garden. And even if your site is not surrounded by swamps, lakes or waterways, most likely during your stay there are annoying and biting mosquitoes to spoil this idyllic picture.
There are a number of methods and tools that can help you easily get rid of the invasion of mosquitoes. To prevent them from entering the premises at the entrance set shredders electric shock or ultraviolet rays. Mosquitoes and other insects attracted by the light of the lamp, pass through the electric field, and die. Under the net accumulated mass of dead insects, which must be periodically removed.
using sprays or spray smoking spiral, which is often distilled mosquitoes, do not forget that they are not safe for human health. It is worth noting that many of these methods can handle the insects in the room, but can not be used effectively in the open.
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Ultrasonic mosquito repellent device is shown in the figure and developed, taking into account the fact that usually bite only in female mosquitoes during the breeding season. At this time, the females tend to avoid males and fly away from the area where there are frequency emitted by males. According to some publications, the frequency emitted by males of mosquitoes, in the range of 20 to 25 kHz, ie in the ultrasonic range, and according to others - in the range of 5 to 7 kHz, these frequencies can be heard by the human ear.
Based on the above, the author has collected a simple device, the circuit is shown in Fig. The scheme is based on the multivibrator 4047, operating frequency is set by external components C1, R1 and P1. Potentiometer P1 allows slightly adjust the frequency.
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