Woodworking machine in the personal sector never hurts, and in the construction or building a house or garden he is simply necessary. However, the ability to purchase it is not everyone. Moreover, commercially available machines also not all in all satisfied: the dimensions are large, then the possibility is too small, then again the price is high. With such a choice had to face me. Out of position is quite simple — estimated their capabilities and decided to make the machine: what I needed, especially since the motor and sortimenti metal I already had.
SMALL — YES, UNIVERSAL!
What is educational flying model? We are all accustomed to the fact that it is a machine fit only to acquire the initial skills of piloting. In most cases, the training model is built with virtually no requirements for its flight properties. The main thing – to provide the maximum ease of manufacture. Eventually, when the athlete will be accepted for the design of the following models with which it will compete, will be subject to calculations and aerodynamics, and strength of materials, and materials science. But at first – what to suffer, whether… And see the light polulotosa “snags”.
Going on a fine summer day at the beach, you take a small bedroll, which at the chosen place and unfold the envy of all the neighboring vacationers receive individual oblong tent at the same time with the litter and even a small “wall” that protects you from the wind.
Or night duty (with reduced brightness) lighting, allowing at the same time significantly increase the lamp life, can be implemented in different ways. Among the simple and reliable method using a quenching capacitor in power supply circuit (Fig. 1). The capacitance C1 is calculated as reactance to obtain the desired lamp voltage ЕL1. Resistor R1 is necessary for capacitor discharge after disconnecting the circuitry from the network. Its value is in the range of 100-500 ohms.
At home, when everything is at hand, everyday problems are solved easier, can not be said about camping life in the campaign – be it a tourist, a geologist, surveyor. Here often helps advance preparation or resourcefulness, the ingenuity, so necessary in a so-called field conditions.
