allows you to quickly verify the health of the quartz resonators. Diagram of the device consists of a generator (T1), detector (D1, D2) and DC amplifier (T2). By connecting the quartz to the two terminals of the generator, the power on. If the resonator is OK, resistor R2 appears to the high-frequency voltage which is then fed to diodes D1, D2 for detection. Highlighted in this case a constant component opens the transistor amplifier stage. Load UPT serve milliammeter ИП1 and lamp L1. The glow lamp indicates the functionality of the quartz. But his activity is judged by the readings of the milliammeter. For the active resonator current is 70-90 mA, and for inactive — 30-40 mA.
TEST QUARTZ
Sports model missiles Ѕ6В champion of Russia S. Romaniuk (G. Uray) — a graphic representative of the aircraft’s so-called “Ural” scheme, the author and developer of which is a team of rocketmodeler city of Chelyabinsk under the leadership of the deserved trainer of Russia V. I. Tarasov. Its main feature — an extended tail cone. Its length is 115 mm. In the rest of the model is made according to fairly well-known technology.
The competition of the State Committee on aviation technology to establish the impact of a missile to destroy aircraft carriers was announced in September 1961. In the fight for the prestigious order entered OKB A. N. Tupolev, F. S. Yakovlev and P. O. Sukhoi. In the autumn of 1962 was held on advanced Scientific-technical Council, which commissioned the development of a conceptual design of the aircraft design Bureau of P. O. Sukhoi.
Machinery and apparatus air cushion (profit centers and WUAs), every year more and more attracted the attention of designers all over the world. This is not surprising. The use of the inherent principle, especially for all-terrain vehicles, allows us to obtain unprecedented off-road capability and speed. They can freely and equally easy to move on the highways and country roads, marshy bog, on the water surface and a plowed field.
The debut of this most powerful and most expensive car that produces the famous Italian firm, was held in January 2004 at the prestigious Detroit motor show. The machine will replace produced with the 1992 FERRARI 456 GT.
Throwing glider pioneer. Non-motorized model glider is very popular among modelers. Made in the form of models of monotypes, throwing gliders allow for fun competitions on the range, while models in the air or on landing accuracy.
A very simple device in order to train the hand for, say, playing table tennis, can be done in just one evening. Here are the materials you will need for this. Two boards: one size 200X300 mm (6 mm) and the other 300X150 mm thick (18 — 20 mm); Reiki 20X250 mm; the bar from which we will make the holders; a piece of wire for the installation of electrical circuits, copper wire thickness of 0.5 mm for the coil and the hook. Oh, and do not forget to prepare the light bulb from the flashlight with cartridge mounting and battery KBS-L.
There are electric circuits of high voltage sources for aeroionizatora, which are collected on the basis of the automotive ignition coil. They are all quite simple and easily repeatable. However, the cost of the ignition coil is very high.