This article is created due to the fact that there are many completely unjustified views on the current state of the problem of electric transport. Unjustified hopes lead to disappointment and rejection of the very idea of ​​clean transport. These sentiments are in full support of opponents of electric vehicles, which are not so much numerous as influential (the world is sitting on the "oil and gas needle" and this dependence has long been a narcotic ...).

First you need to decide on the modern realities and objectives of the introduction of electric vehicles. Already driving an electric car is not only environmentally friendly, but also financially beneficial. The main argument against the electric car is a small range on one charge of the battery. This shortcoming is more than compensated by the fact that most intercity trips are made in the “to work - home” cycle and, on average, transfers are carried out at 25-30 km per day, with an average of 1.3 people being transported. Therefore, we will determine that a modern electric car is a means for urban communication in medium and small cities.

When using lead-acid traction batteries, as the most affordable at the moment, the battery weight to reach a maximum range of 60 km is ...

An electric motor is simply a device for efficiently converting electrical energy into mechanical energy.

This transformation is based on magnetism. Electric motors use permanent magnets and electromagnets, in addition, they use the magnetic properties of various materials to create these amazing devices.

There are several types of electric motors. We note two main classes: AC and DC.

Class AC motors (Alternating Current) require an AC or voltage source to operate (you can find such a source in any electrical outlet in the house).

Electric motors of DC (Direct Current) class require a direct current or voltage source to operate (you can find such a source in any battery).

Universal engines can work from any type of source.

Not only the design of the engines is different, the methods of controlling speed and torque are different, although the principle of energy conversion is the same for all types ...

The most common failures in the electrical circuits of electrical appliances and household appliances:
1) open circuit (resistance of an electric circuit is equal to infinity);
2) a significant increase in resistance;
3) a significant decrease in resistance;
4) short circuit (electrical resistance is close to zero).
Common causes of these malfunctions:
- breakage due to the aging of the elements, the passage of high currents, shock, vibration and corrosion;
- a significant increase in the resistance of electrical circuits compared to the nominal value caused by the aging of the elements, worseno contacts and contact connections, deviation of the parameters of individual elements;
- a significant decrease in the resistance of electrical circuits compared to the nominal value due to an increase in surface leaks and aging of the elements.
Short circuits are the result of breakdown of insulation, short circuits of conductors and elements on the housing and between each other (for conductors of different polarities and phases).

When troubleshooting, you need to know and be able to use the signs of proper operation of electrical equipment.
They can be divided into two main groups ...

I work in Convir as a system administrator and programmer. It so happened that our office, laboratory and production are located in different places. I am sitting, generally, on Preobrazhenka in a small room. But not far from home, and Internet communications are just excellent, with inexpensive traffic.

My side is sunny. Depending on the weather, it’s hot, then cold. I put the air conditioning in the window, and then during the heat I was not up to work. To make it cheaper, the air conditioner bought flowing (180 cu), at the same time, it ventilates the room, in contrast to the split system. I don’t open the windows now, there is less dust!

In general, everything is fine, only with this air conditioner is a hassle. He has no remote control. He is so simple. And it stands above and it’s inconvenient to climb to it. Again some kind of ambush. All these problems with climate and lighting are very distracting, and for me to focus is a big problem. I somehow began to think about it all the time. Well, I came up with ...

In 1910, the famous American automaker Henry Ford built a huge car factory in Detroit. A powerful electric generator was ordered for the plant, which was supposed to provide electricity to all the machines in the plant. The generator was brought in, mounted, but when it was started, it turned out that it was very buzzing, heated and did not give up half of the required power. For many days, experts were busy with the generator, but could not understand anything.

The situation for Ford was critical: the delay in launching the plant threatened with huge losses. And he decided to take an extreme step - he invited Professor Charles Steinmets to the factory of one of the leading American electrical engineers. The professor arrived, walked around the generator and ordered that they bring him a cot, a piece of chalk, a notebook and a pencil — he wanted to work at night. All night, Steinmets walked around the generator, put mysterious marks with chalk, then lay on a cot and calculated something in a notebook.

In the morning he said that they removed the generator cover and wound 16 turns from the induction coil. After that, the generator was started and it worked silently and began to give off power even more than that for which it was designed. The enraptured Ford thanked the professor and asked for a bill for the work done. Soon a bill of $ 10,000 came. The sum at that time was enormous, but Ford's enthusiasm had already passed. He began to look for an excuse not to pay money and sent Steinmets a letter asking him to detail the account, to make costing. Such a calculation Steinmets sent.

This is how she looked ...

What is a block? A certain device or part of the circuit selected by us, having the so-called “input” and “output” for signal transmission, and the input “power”.
Consider a simple circuit where, as such, there is no control signal, its function is performed by directly turning on the power to the executing mechanism (output device).
Further, in this case, the concepts of “input” and “output” will be applied to the transmission of the supply voltage.
Any device in itself can be thought of as a separate unit. For example, we inserted the plug into the outlet, made the “input”, and at the “output” we get the result: we watch TV, the iron is heating, the music sounds, etc.
Take, for example, a lamp - a night lamp with rotating light filters and a 12-volt incandescent lamp. We divide the object, for convenience, into separate blocks ...

Aluminum is one of the most convenient materials in construction practice. A little inferior in the strength of steel, it is much easier to process, has good electrical and thermal conductivity, and a beautiful appearance

However, the main problem that arises among amateurs when working with aluminum is its soldering. Just because aluminum does not solder.The reason for the impossibility of brazing aluminum by conventional methods is the ability in air to form oxide films very quickly (in fractions of a second). Therefore, previously developed technologies require either special mercury fluxes or special replaceable tips for soldering irons.

Most often, the need for soldering aluminum occurs when repairing resonant voltage stabilizers. In order to save, all windings of industrial network stabilizers are made of aluminum wire ...

- How many blondes do you need to screw in a light bulb?

- One. She holds a light bulb, and the world revolves around her.

“Not one, there are Mexicans for that.”

- Ten: one stands on the table and holds a light bulb, four rotate the table clockwise, and the remaining five walk around the table in the opposite direction so that the first does not feel dizzy.

P.S. In fact, much more. Someone else has to check everyone’s documents.

- How many programmers do you need to wrap a light bulb?

- Three. One stands on the table and holds a light bulb. The second reads the algorithm for screwing the bulb. And the third one conducts beta testing in real time: it continuously clicks the switch until the light comes on.

- None, it’s a hardware problem ...