A rectifier is a device for converting AC voltage to DC. This is one of the most common parts in electrical appliances, ranging from a hair dryer to all types of power supplies with an output DC voltage. There are different schemes of rectifiers and each of them to a certain extent copes with its task. In this article, we will talk about how to make a single-phase rectifier, and why it is needed.

A rectifier is a device designed to convert AC to DC. The word "constant" is not entirely correct, the fact is that at the output of the rectifier, in the circuit of a sinusoidal alternating voltage, in any case there will be an unstabilized pulsating voltage. In simple words: constant in sign, but varying in magnitude.Stabilized is a voltage that does not change in magnitude regardless of load ...

Before checking any chip for performance, you need to know and understand its device, at least approximately. This is necessary in order to pre-imagine what signals or voltages to expect from a working microcircuit at its terminals. It is best to assemble a circuit for testing it at least on a breadboard to test a specific microcircuit - this is if the microcircuit is new or already worn out.

In general, if the device of the microcircuit is known, then in some situations it can be checked without even soldering from the board on which it is installed, simply by measuring the signals on the legs with a multimeter or an oscilloscope. Then the presence or absence of a signal or a distorted pulse shape will immediately show what is what. Suppose that the microcircuit is still installed on the board and it is undesirable to immediately solder it ...

All modern microcircuits are divided into three types: digital, analog and analog-digital, depending on what type of signals they work with. Today we’ll talk about digital microcircuits, since most microcircuits in electronics are digital, they work with digital signals.

A digital signal has two stable levels - a logical zero and a logical unit. For microcircuits made according to different technologies, the levels of logical zero and unity differ. Various elements can be located inside digital microcircuits, the names of which are known to any electronic engineer: RAM, ROM, comparator, adder, multiplexer, decoder, encoder, counter, trigger, various logic elements, etc. Today, digital circuits of TTL technologies are most common. and CMOS. In TTL technology chips, the zero level is ...

An IGBT transistor (short for English Insulated-gate bipolar transistor) or an insulated gate bipolar transistor (abbreviated IGBT) is a three-pin semiconductor device that combines a power bipolar transistor and a field-effect transistor controlling it inside one housing.

IGBT transistors are today the main components of power electronics (powerful inverters, switching power supplies, frequency converters, etc.), where they serve as powerful electronic switches that switch currents at frequencies measured in tens and hundreds of kilohertz. Transistors of this type are produced both in the form of separate components, and in the form of specialized power modules (assemblies) for controlling three-phase circuits. The fact that the IGBT transistor includes transistors of two types at once allows you to combine the advantages ...

In order to obtain a fixed voltage value equal to a fraction of the initial value, voltage dividers are used in electrical circuits. Voltage dividers can consist of two or more elements, which can be resistors or reactances (capacitors or inductors).

In its simplest form, the voltage divider is represented by a pair of sections of an electric circuit connected in series with each other, which are called the shoulders of the divider. The upper arm is the section that is located between the positive voltage point and the selected connection point of the sections, and the lower arm is the section between the connection point (selected point, zero point) and the common wire. Of course, voltage dividers can be used both in direct current circuits and in alternating current circuits. Resistor dividers fit for those...

Microcontrollers are an integral part of the life of a modern person. They are used from children's toys to process control systems. Thanks to the use of microcontrollers, engineers managed to achieve greater manufacturing speed and product quality in almost all areas of production. This material is an overview of key dates in the history of microcontrollers. This is not a technical guide, many subtleties and points are missing.

To understand the reasons for the appearance and development of microprocessor technology, take a look at the characteristics and features of the first computers. ENIAC - the first computer, 1946. Weight - 30 tons, occupied the whole room or 85 cubic meters of volume in space. Large heat dissipation, power consumption, constant malfunctions due to electronic lamp connectors. Oxides led to the disappearance of contacts and lamps lost contactlost contact with the board ...

A diode bridge or, as it is also called, a rectifier is needed to convert AC to DC. It is used wherever you need to get constant voltage power, regardless of the power of the device, current consumption or voltage. To rectify a single-phase voltage, a Gretz circuit of four diodes is used. If there is a transformer in the circuit with a tap from the midpoint, use a circuit of two diodes. The bridge is called the inclusion of four diodes.

The diode bridge can be made in one housing, or it can be made of discrete diodes, that is, separate ones. The diode bridge input is called the AC voltage connection points, and the output is the point from which the constant is removed. Alternating voltage is applied to the points at which the anode is connected to the cathode of the diodes. At the output, plus and minus are obtained, while the positive pole is removed from the connection point of the cathodes, i.e. plus power, and the connection point of the anodes is a minus ...

Technologies in the field of power electronics are constantly being improved: relays become solid-state, bipolar transistors and thyristors are being replaced more and more extensively by field effect transistors, new materials are developed and applied in capacitors, etc. - active technological evolution is definitely visible everywhere, which does not stop for a year . What is the reason for this?

This is obviously due to the fact that at some point the manufacturers are not able to satisfy the consumers' demands for the capabilities and quality of power electronic equipment: the relay sparks and burns contacts, bipolar transistors require too much power to control, power units are unacceptably a lot of space, etc.Manufacturers compete among themselves - who will be the first to offer the best alternative ...? So there were field MOSFET transistorsthanks to which management ...