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Vehicle audio

Most modern cars have a built-in audio system with speakers in the doors and a player in the dashboard, but very often the factory-made audio…

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Solar panels controller

Many people think that the installation of a solar system is complicated, expensive and of limited efficiency and therefore they do not yet have one.…

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Computer cooling fans

Types of computer fans Computers are equipped with different cooling systems that spread the excess heat generated by the components, the main systems including CPU…

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Computer fans

Nowadays we often need to repair our PC by ourselves. In this article I will try to consider the common problems with processor fans, power…

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Motor start capacitor

Motor start capacitors are designed for starting AC induction motors. Start capacitors have two essential roles: 1.They reduce sparking between the contacts. 2. They provide…

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Design and construction of power supply for video-surveillance systems

One of the main problems that need to be resolved in the design and construction of systems for video-surveillance is unconditionally the provision of power…

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Power circuit breakers

Circuit breakers are designed to protect electrical circuits from short circuits, current overload and other failures. They can operate without human intervention when certain preset…

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Transformers

A transformer is a static electrical device which transfers AC electrical energy from one (or more) electrical system to another (or others) through electromagnetic induction,…

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Buzzer, beeper

A buzzer is a signal element (a device) which announces a certain, pre-defined, expected event through a sound. In German the word is “summer” which…

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Internet telephony VoIP

What is VoIP? This is actually a technology that allows the transmission of voice data over the Internet. VoIP – Voice over internet protocol (IP).…

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