When taking DC voltage measurements with a multimeter, we usually don’t think about its accuracy. Receiving a result of 5.1V, when we expect something in the neighborhood of 5V, we assume that the multimeter’s indication is correct, telling ourselves that simply at the output of the power supply or the USB port of the computer …
In today’s world, the importance of various types of devices from the “smart home” category is growing day by day. There is nothing surprising in this, after all, thanks to these, sometimes very simple equipment, we can remotely control home lighting, heating or ventilation. Besides, thanks to all kinds of sensors, reading temperature, humidity and light intensity has become much simpler. The data collected by the system can be used to intelligently manage actuators such as relays. In other words, today’s technology allows us to build really complex structures at a low cost, which we can call a smart home.
In today’s dynamic world of electronics, we are constantly using advanced technologies that enable us to perform tasks faster, more efficiently and more conveniently. One of the most remarkable developments that has affected our daily reality is the invention of the integrated circuit. These small but powerful electronic components, typically containing hundreds, thousands or even millions of elements on a single silicon wafer. Chips have revolutionized our world in ways we could not even imagine before. But in order to explore the history of integrated circuits, we need to go all the way back to the 1920s, to the days of tube designs.
Any electronic equipment must be powered in some way, without the right voltage it will not work at all or will work, but only for a fraction of a second. There are quite a few solutions and designs whose task is to bring energy to the designed circuit. Some of the most commonly used are linear stabilizers and voltage converters. We will leave stabilizers for another material, while today I would like to tell you a little about the operation and design of inverters. In addition, we will also look at their problems and try to solve them.
On a cold December morning in the Czech village of Březolupy, a man stops his truck in front of a 17th century castle. He puts on thick gloves, gets out of the truck and opens the tailgate. Then, very carefully, he unloads more crates of heavy equipment and glass.
Recently, I have been trying my hand at a bit more professional electronics photography. When taking pictures, I tried to force a particular type of lighting with several panels of WS2812B LEDs, controlled by Arduino. However, constantly changing the code is quite tiresome, so I built a simple device to control this type of LEDs.
Anyone who starts playing with electronics sooner or later encounters on his way the chip numbered 555. According to many, this timer is one of the chips that changed the world. It is hard to disagree with this especially considering the scale of production and the multitude of applications, about which even separate books have been written. In this material I will tell you a little about this unique chip.
In recent years, LED bulbs have made their way into our homes for good, replacing the now-discontinued tungsten filament designs. Not surprisingly, LEDs compare surprisingly well with other light sources – they consume little energy, can shine in a variety of colors, turn on instantly and do not heat up as much.
ALUs, or arithmetic logic units, are part of every processor today. In the past, they were produced as single, physical chips or a collection of multiple logic chips. In today’s material, I will tell you about the construction, history and operation of one of the first ALUs.
Some time ago on my site appeared the first material about bipolar transistors. In it, I told you a little about their history, construction, we put the first circuit into operation together, and also took a look inside this unusual element. Today we are once again taking on this element, but we will take a closer look at its operation. I’ll tell you about the basic working circuit of the transistor, we’ll check its operation, and finally we’ll set it on fire.
