I propose an extremely simple structure of the electronic musical instrument. Its structure is clear from the drawing and the concept. The musical range of 2-3 octaves.MAGNET AGAINST THE WIND
To open window the window is not closed under the impulse of the wind, it is easy to establish a kind of brake, which would not allow it to close, and left at least a crack. On the window and the window frame enough to attach a counter is a small single-pole magnets: pushing away Read more…



Sometimes to connect two devices or articles required joint called a swivel. It provides independent rotations of one part relative to another. The swivel is often used in conjunction with a carabiner (hook with constipation). For example. in the ship’s gear, and leashes for dogs and other animals kept on a leash. Now put them on the straps of the bags that are worn on the shoulder.

On the Parking of campers and motorcyclists will be useful to fluorescent. It gives good coverage and is very economical. As power supply used by the DC / DC Converter transistor type П215 (П202, П217, P4) that can run on batteries.
When using groundwater into the well usually clog a pipe with valve and filter, the latter often out of order. Repair need to get the whole structure. The problem of repair and operation of wells can be solved much easier if you use the following device. The basis of it — sealed the tank with the filter capacity of 35-40 litres and pump “Kama” with the engine of 1.6 kW.



