The majority of electric devices demand low indicator of tension. For example, portable devices can be loaded from standard network in 220 Volts, but actually tension in 12 Volts is required. That at the exit to receive such indicator, it is necessary to buy the special device.
Now in use more and more portable electric devices appear, since the most elementary portable radio invented even before World War II and finishing with newer technologies, such as notebooks and portable DVD players which are often used on travel.
The invention of mobile phones of different configuration and performance became the most significant achievement in the modern equipment. However there is question of their long-term work, they are not just like that called portable, each device works from the accumulator.
Tension converter
The accumulator – let and not the main, but irreplaceable part for personal and portable device which feeds it for day and weeks. As well feed by electric current is necessary for accumulators, and the socket with exit of 220 Volts easily is suitable for this purpose, however for charge of accumulator batteries generally it is required from 3.5 to 30 Volts. The most irreplaceable gadgets for the person have average values of-12 Volts. Such voltage output somehow should be received and to receive from what is available in socket life. Special power supply units which main function to give many times the lowered current indicator are for this purpose applied. They are used for different portable devices, and depending on the device are called differently. The most widespread names: power supply unit, charging device and stabilizer. However function at all these devices same – to stabilize tension to necessary level, to be exact indicator of volts. They are capable not only it is necessary to give tension, but also can transform alternating current to constant. The fact is that portable devices need the constant current intensity, but not variable. Unfortunately, the electrical wiring cannot brag of such phenomenon. In standard network tension from 210 to 230 constantly jumps, and besides the polarity "+" changes and "-". And these factors too harmful influence accumulator charging and in general power supply of portable devices.
The transformer as the assistant in voltage stabilization
In what way do stabilizers transform tension? The transformers which are built in the system of the block allow to gain desirable effect. It is internal part which is used in 95% of the household equipment, possesses many useful functions, beginning from generation or transformation of high tension on the primary winding, finishing with exit of the necessary tension on secondary winding. Naturally, if properly used the transformer in converters the mains voltage moves on the primary winding. In the accumulators which are feeding and charging portable gadgets, transformers consist only of the primary winding on which high tension moves, and the secondary winding generates reduced. Well and, of course, the closing electrical circuit which already at the exit gives the necessary tension in 12 Volts has received the name – the rectifier. Without it, unfortunately, the converter of tension will not perform all functions assigned to it.