Repair and diagnostics of malfunctions of electronic devices is carried out by finding failed elements with their subsequent replacement. It is often not possible to visually determine which radio component is faulty, therefore measuring instruments - testers are used to detect breakdowns. With their help, checking the varistor is usually not difficult.
If you need to choose a circuit breaker for the electrical panel, you must first study its characteristics. It is important to know what the load will be on it. The most basic characteristic that they are guided by when buying this device is the rated current. It is she who is indicated on the body of the circuit breaker in large numbers and letters.
The problem of converting units of measurement of certain physical quantities into a convenient format arises for most people who actively use electronic equipment at work and at home. Most devices operate on electricity, which must be connected to a device with certain parameters, in the right amount to ensure operation in a safe mode. Therefore, the question of converting mA or μA to amperes is of practical importance.
Currently, among professionals and amateurs of radio electronics, they are in great demand point soldering irons, which are used to repair electronic products for industrial and household values. In connection with the minimization of radio components, it is necessary to comply with the technical standards and regulations for the installation of radio electronic components that are vulnerable to overheating. Small-sized soldering irons for soldering microcircuits are especially popular.
At the household level, everyone is faced with electricity every day. Everyone knows how dangerous it can be. Each contact with it requires the adoption of measures that will protect us from its effects. All work must be performed on de-energized electrical equipment. To make sure of this condition, you need to know how to use an indicator screwdriver to check that there is no voltage.
Indicator screwdriverThe development of human civilization, the desire and need of man to transform the environment make him constantly compare, measure, weigh or count something. To facilitate and perform regularly occurring similar tasks, they began to develop instrumentation, or instrumentation. At first, these devices were simple, made from improvised means, but over time they turned into complex structural and electronic mechanisms.
When assembling power supply, monitoring and control circuits, confusion can arise in the field of power switching devices. Difficulty is the choice between contactors and magnetic starters. A similar purpose, principle of operation and design have led to the fact that not everyone can say how the contactor differs from the starter. Small differences in the structure and characteristics of the main units determine the belonging of devices to one or another group of devices.
Contactor mechanismAn electric field is called matter, which ensures the interaction of electric charges in it. It can be generated by both an electric charge and a changing magnetic flux. In the first case, it is called electrostatic, in the second - vortex. Without this field, electric current cannot arise, but in order to know how it arises, one should familiarize oneself with the basic characteristics of the electric field.
Power is an important factor in assessing the performance of electrical equipment in a power grid. The use of its limit values can lead to network overloads, emergency situations and equipment failure. In order to protect oneself from these negative consequences, it is necessary to understand what active reactive and apparent power is.
