Voltage instability in the regional power lines, unfortunately, are not so rare. Especially during strong winds, when the wires of overhead lines of 0.4 can overlap. Because of the suffering of electro-, radio – and TV equipment, included in the housing network, where the voltage can suddenly become equal, say, 100, or Vice versa, 350 V. However, for my appliances I have five years did not worry, as the anomalous voltage in the network it protects a homemade relay system.
The helicopter is equipped with the most detailed and realistic body of the helicopter Sikorsky UH-60. For maximum realism the helicopter is equipped with 4-blade main rotors, making the helicopter not only realistic, but also adds stability in flight. Helicopter applied electronic Flybarless system with three gyroscopes. High-performance brushless motor not only works for a long time without maintenance but also adds power to the helicopter. Patented system of removal of canopy makes it easy to change the battery and maintain the mechanics of the helicopter. RC helicopter Nine Eagles UH-60 is equipped with a gorgeous body scale, unique electronic 3G system with three gyroscopes and four-bladed main rotor.
Deserved recognition and popularity enjoyed by amateur radio operators is quite simple and reliable circuit includes flip-flop on the two transistors and a pair of thyristors controlled them. It allows you to alternately switch the four incandescent lamps or garlands for the effect of “running lights”.
Nowadays there are cases of power failure. In such a situation, can save the emergency power supply. For example, from a car battery with a homemade voltage Converter 12/220 V. Saw: stock power is enough for several hours of modern television, the lighting of the lamp or other appliance with power up to 100 watts. The maximum current consumption from a battery does not exceed 11,5 A.
