Entertaining experiments. The new design of the simplest electric motor
We will assemble a more stable, elegant and compact version of the electric motor.
We use the mounting plate as the base, which will provide us with a stable base and internal electrical connections, and the AAA battery as the frame for the coil.
In the form of an experiment, we wind only 5 turns of wire to make sure whether our electric motor will work with such a coil. For convenience, add a current switch.
Here is the motor in assembled form, and here - and in working condition. As you can see, everything works ...
Electrical energy from plants - green power plants
The direct transformation of light energy into electrical energy underlies the operation of generators containing chlorophyll. Chlorophyll can give and attach electrons when exposed to light.
In 1972, M. Calvin put forward the idea of creating a solar cell, in which chlorophyll would serve as a source of electric current, capable of taking away electrons from certain specific substances under illumination and transfer them to others.
Calvin used zinc oxide as a conductor in contact with chlorophyll. When illuminating this system, an electric current with a density of 0.1 microamperes per square centimeter appeared in it.
This photocell did not function for long, since chlorophyll quickly lost its ability to donate electrons. To extend the duration of the photocell, an additional electron source, hydroquinone, was used. In the new system, green pigment gave away not only its own, but also the hydroquinone electrons.
Calculations show that such a 10-square-meter photocell can have a power of about kilowatts.
Japanese professor Fujio Takahashi used chlorophyll extracted from spinach leaves to generate electricity. The transistor receiver to which the solar panel was connected worked successfully.
In addition, studies are underway in Japan to convert solar energy into electrical energy using ...
How to determine the malfunction of thyristors
Loss of thyristor performance may occur due toand:
a) open circuit inside the device (combustion);
b) loss of controllability (combustion of the control electrode circuit);
c) loss of locking ability in the forward or reverse direction (breakdown);
d) breakage of conclusions.
An inoperative thyristor can be detected using an AC voltmeter, an ohmmeter, or a test circuit.
An inoperative thyristor in a circuit under AC voltage can generally be determined using ...
Prospects for the development of an automated electric drive
The specifics of the development of modern civilization, especially in the last ten years, cardinally changes our lives. Two trends deserve the most attention.
The first is the rapid development of everything related to computer technology. This is not only a computer in every home and workplace, not only the Internet and “toys”. If you look more closely, then we have all been hostages of computer technology for a long time. Almost any device now has a control chip in its composition, which, in principle, is the same small computer. This is a TV, and a washing machine, and a mobile phone, and a camera, and a keychain to the car, and the car itself ...
Now in my office at work about 60! CPU control ... This is already very serious! If the microprocessor used to cost tens and hundreds of dollars, now you can buy a control chip for less than a dollar!
The second trend is an increase in the cost of energy, and everything related to the mining industry ...
Why the existence of an eternal light bulb is not possible
In the city of Livermore (California, USA) there is a unique light bulb, which was screwed in in 1901 and has since been on without interruption. This is an absolute record that entered the Guinness Book of Records. A webcam is installed in front of the unique light bulb at Fire Station No. 6, so the light bulb can be seen on the Internet. How was this possible?
It is known that the main face of light bulb burnout is the gradual wear of a tungsten filament. This filament is heated almost to the melting point of tungsten (3300 ° C), otherwise you will not get an intense light flux. At this temperature, the tungsten atoms in the crystal lattice vibrate intensively and some of them come off and go into space, settling on the walls of the flask. Gradually, the thread becomes thinner, and in the thinnest place the temperature goes beyond the melting point, the thread burns out.
Obviously, to increase the life of the bulb, it is necessary to install a thicker thread. But at the same time, to maintain the resistance of the thread, it is necessary to increase its length. A twofold increase in the diameter of the filament leads to an increase in the mass of tungsten by 8 times. And tungsten is an expensive metal, so current light bulb manufacturers are trying to save it.
But there is another reason for lamp wear, which almost no one knows about. The thing is...
How to install a power outlet. Detailed photo instructions for installing outlets
Before installing the outlet, you must turn off the circuit breaker in the electrical panel in the apartment or on the stairwell. In this case, you must make sure that it has worked and there is no voltage in the outlet. This can be checked using a screwdriver indicator or a multimeter.
To install the sockets, we need the following tools: level, knife, pencil, screwdriver, pliers, wire cutters.
Consider installing a double socket, where in one part it will be electric, and in the other a telephone jack. For ease of installation, the wires should protrude from the box by 50 - 80 millimeters. For strict horizontal installation of the outlet, using the level, mark on the sides of the place of internal mounting of the outlet. Having pulled out the wires, carefully clean their ends from the factory insulation. The bare ends of the wires, it is advisable to do no longer than 10 millimeters.
Modern wiring has three wires and is called a three-wire, one of the three wires is grounding, the other phase and the third neutral wire. The indoor unit of the outlet is equipped with three terminals, to which these three cores are connected.
After checking that the wires are not intertwined under the outlet, we begin the installation, according to our marking ...
At the end of the last century, physicist Nikola Tesla, a Serb, was one of the first Nobel Prize winners, whom he refused to receive. In 1885, he demonstrated the operation of his transformer, and from a turbine of the Niagara Hydroelectric Power Station (power 5,000 hp) and lit carbon-free incandescent lamps without wires or switches within a radius of 25 miles. After that, one of his energy projects received support and became funded by Morgan. N. Tesla at a special training ground created his own power plants operating on the principle of "free energy" (today we would say - based on vacuum energy). When Morgan met their work in 1898, he ordered all the installations and the landfill to be destroyed, because he realized that if they were given the way, mankind would never need organic fuel again. Since then, the world has been “seeking energy” ...
This experiment on ignition of coal electric lamps at a distance without lead wires was only able to be repeated by the Russian scientist Filippov, who, from the installation he created from St. Petersburg, lit electric lamps in Tsarskoye Selo. He was a unique universal scientist: he was a doctor of mathematics, physics, chemistry, and philosophy. In the winter of 1914he sent a decision to the General Staff of Russia that made it possible to exclude war from the practice of mankind - seven days later it was published in the yellow press, and another three days later he was found murdered in his home office, and the gendarmes could not determine the method of murder ...
Free bathroom lighting (from the "New Technologies" cycle)
If you have a faucet leaking in the bathroom - do not despair. Make a small impeller, substitute it under dripping water. Convert the rotation of the impeller to an electric current. Your light will burn for free.
