How to make

How to build a solar installation and choose a controlling unit (controller) for it

Building solar systems to generate electrical energy from the sun using solar panels is becoming an increasingly attractive and affordable option. On the one hand,…

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What is Arduino and how to start our first project

Arduino is an open-source electronics platform based on easy-to-use hardware and software. It interacts with the outside world via different sensors, buttons, motors, LEDs and…

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Graetz circuit, connection and principle of operation of Graetz circuit

Graetz circuit is a two half-period rectifier. It is used for rectifying alternating voltage when consumer with constant voltage has to be powered. It consists…

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Two-way switch for lighting, scheme with a double two-way switch, installation of two-way switches, other switches

Two-way switches are used when we need to switch on and off a lamp from two places. This switch is also called switch „scheme 6“,…

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Computer speakers

There is hardly a product in our daily lives with such a variety of shapes, sizes and functions. Computer speakers have undergone a great evolution…

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How to create a Local Area Network (LAN)?

Equipment required: Router – it may have a built-in switch and/or Wi-Fi, a switch (commutator), Wi-Fi (access point / hotspot) FTP or UTP cable, RJ-45…

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Chargers and battery testers

Car batteries, even when they are not used, they self-discharge over time. Car batteries have a standard level of natural self-discharge and it says that…

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LED floodlights

LED floodlights replace metal halide and halogen floodlights in more and more areas of life. They represent an optical system that focuses light on a…

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Photoelectric timer, weekly programmable, with astronomical correlation for DIN rail

The generation of digital programmable timers that read geographical coordinates is a modern means of automation of systems for illuminating objects, lighting and advertising boards,…

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LED tubes

LED tubes replace conventional fluorescent tubes, being over 2-3 times more economical and having 10 times longer life and better light current. They don’t contain…

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