Probes are an integral accessory of any multimeter. And complete with the device are always probes. Sometimes these are pretty high-quality probes that faithfully serve their master for years. And sometimes a week does not pass from the day the device was purchased, as one of the probes becomes unusable, for example, the wire breaks from the tip or from the plug, or breaks, insulation breaks, exposing a thin core.

In such a situation, a person will certainly come to the idea of ​​buying new probes, and preferably of better quality, more reliable, meeting the needs and requirements as much as possible, individual requirements depending on his occupation, where a multimeter is used regularly or from time to time. Of course, someone in such cases decides to repair the probes on their own, and there are a lot of materials on the network on this topic. You can even make improved plugs yourself ...

The current passing through the circuit breaker is determined by Ohm's well-known law by the value of the applied voltage, referred to the resistance of the connected circuit. This theoretical position of electrical engineering is the basis for the operation of any machine. In practice, the mains voltage, for example, 220 volts, is supported by automatic devices of the energy supplying organization within the standards stipulated by state standards; it varies slightly within this range. Going beyond GOST is considered a malfunction, an accident.

The circuit breaker cuts into the phase wire of the power supply of lamps, sockets and other consumers. When the electric shaver is first fed from the outlet, and then the washing vacuum cleaner, then in both cases a current flows through the machine in a closed circuit between phase and zero. But, in the first case, it will be relatively small ...

Modern electrical equipment in its work uses numerous technological processes that proceed according to various algorithms. An employee engaged in its operation, maintenance, installation, commissioning and repair, you must have reliable information about all their features. Providing the events in graphical form with the designation of each element in a specific, standard way, greatly facilitates this process, allows you to transfer the intentions of the developers to other specialists in an understandable form.

Electrical circuits are created for electricians of all specialties, have various design features. Among the methods for their classification, the division into principal and assembly is used. Both types of circuits are interconnected. They complement each other’s information, are carried out according to uniform standards ...

Sometimes, when there is no marking on the capacitor or there is no confidence in the parameters indicated on its case, it is necessary to somehow find out the real capacity. But how to do it without special equipment?

Of course, if at hand there is a multimeter with the ability to measure capacitance or a C-meter with a suitable range of capacitance measurements, then the problem ceases to be such. But what to do if only a simple household multimeter and some kind of power supply are available, and it is necessary to measure the capacitance of the capacitor here and now? In this case, the well-known laws of physics will come to the rescue, which will allow measuring capacitance with a sufficient degree of accuracy.

First, we consider a simple way to measure the capacitance of an electrolytic capacitor using available tools.As you know, when charging a capacitor from a constant voltage source through a resistor, there is a pattern by which the voltage across the capacitor ...

The word "transistor" is formed from two words: transfer and resistor. The first word is translated from English as "transmission", the second - "resistance." Thus, a transistor is a special kind of resistance, which is regulated by the voltage between the base and emitter (base current) of bipolar transistors, and the voltage between the gate and source of field-effect transistors.

Initially, several names were proposed for this semiconductor device: a semiconductor triode, a crystalline triode, a lotatron, but as a result, they focused on the name "transistor", proposed by John Pierce, an American engineer and science fiction writer, friend of William Shockley. To begin with, we will plunge a little into history, then we will consider some types of transistors from the electronic components that are common on the market today. William Shockley, Walter Brattain and John Bardin ...

An alternative device for converting the energy of solar radiation into electric current is often called a nanoantenna today, however, other applications are possible, and this will also be discussed here. This device works, like many antennas, on the principle of rectification, but unlike traditional antennas, it works in the optical wavelength range.

The electromagnetic waves of the optical range are extremely short, but back in 1972 this idea was proposed by Robert Bailey and James Fletcher, who even then saw the prospect of collecting solar energy in the same way as it does with radio waves. Due to the short wavelength of the optical range, the nanoantenna has dimensions not exceeding hundreds of microns in length (proportional to the wavelength), and in width - not more, or even less, 100 nanometers ...

When comparing lamps for domestic lighting, considering their advantages and disadvantages, in most cases only the material side is considered - that is, how reliable is this or that lamp in comparison with others and how economical it is. At the same time, the most important selection criterion is missed - harmlessness to health, especially for human vision. In this article, we will consider which lamps are the safest for human health, which parameters should be considered when choosing one or another type of lamp.

When choosing light sources, first of all, you should pay attention to the correct color rendering of the lamp. This concept refers to the display in natural tones of various colors. The highest color rendering coefficient for incandescent lamps, halogen lamps, as well as for certain types of compact fluorescent lamps with a five-component phosphor ...

This article is for informational purposes only. The devices described here are potentially life-threatening, so please be careful when using this information.

A Marx generator is a device for producing high-voltage pulsed discharges, based on the principle of parallel charging several high-voltage capacitors to a high voltage, followed by connecting these charged capacitors to a series circuit, as a result of this addition, a spark electric discharge is obtained at a voltage higher than the voltage of the charging source, in proportion the number of capacitors in the circuit.

Capacitors are charged in parallel through high-resistance (megaohm) resistors, and series connection is made possible by the use of gas (air) arresters ...