Physical concepts and devices

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When performing any actions related to the maintenance of the electrical circuit, it is necessary to know the power of the load on the network. To determine such a macroparameter of the network, it is necessary to most accurately set the value of the power consumption of all and specifically each of the electrical devices. This indicator is indicated on the device or in its technical documents.

Electrician's advice

The key to the durability of any engine is its smooth operation. To solve the set problem in the collector power plants, speed controllers with power control are used. These devices can be purchased or made by hand. The speed controller is a frequency converter based on a powerful transistor. It is necessary to invert the voltage, as well as to smoothly stop (start) the electric motor using a wide-pulse control of electrical devices or PWM.

Most often, frequency converters are used for an induction motor, but they are also found in household appliances. Despite their prevalence, they have not only advantages, but also disadvantages, which have to be eliminated using additional devices. All converters perform an important function, and it is impossible to imagine at least one production without a frequency converter for asynchronous motors.

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A frequency converter

Almost everyone who was engaged in an electrician had to solve the issue of parallel and serial connection of circuit elements. Some solve the problems of parallel and series connection of conductors by the "poke" method, for many "fireproof" garland is an inexplicable, but familiar axiom. Nevertheless, all these and many other similar questions are easily solved by the method proposed at the very beginning of the 19th century by the German physicist Georg Ohm. The laws discovered by him are still in effect, and almost everyone can understand them.

For a person far from electrical engineering, a household device seems to be some kind of black box in which something is spinning. Everyone knows about the electric motor, but few know how it is connected with the buttons on the panel. Meanwhile, any circuit in which there is an electric motor also contains a device that closes the circuit and connects the motor with the same power button. This device is called a magnetic starter, although its correct name is an electromagnetic starter.

Electricity is used everywhere, and it "was always" for the vast majority of people. But hardly many thought about the nature of this phenomenon. Among the basic electrical terms, the most difficult to understand, despite their apparent simplicity, are "potential difference" and "voltage in the circuit".

Current limiter (OT) - a device that is used in electrical or electronic circuits to reduce the upper limit of direct (DC) or alternating (AC) current supplied to a load. This ensures timely reliable protection of generation circuits or electronic systems from harmful impacts due to a short circuit in the network or other negative processes leading to a sharp increase AC / DC.

Current limiter

The strength of the current represents the movement of charged particles in a certain direction, in the taken conductor. Many physicists in the past were worried about the question: what is the current measured and how to measure what is invisible and intangible. But thanks to a number of discoveries, the situation began to become clearer. In order for the movement of charged particles to appear, the action of an electric field is needed.

Aluminum and its alloys have very good characteristics, such as high thermal and electrical conductivity, ease of processing, low weight, environmental safety. But this beautiful metal has one very fat minus, it is extremely difficult to solder. Correctly selected flux for brazing aluminum helps to solve this serious problem.

Soldering flux for aluminum
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