Not a single electrical network is safe from voltage jumps, due to which light bulbs flash, they turn off and household appliances fail. These jumps arise, as a rule, due to poorly performed electrical work. In any case, you need to call an electrician.

To protect against problems associated with voltage surges, stabilizers or voltage control relay are used. About these two types of devices, their pluses and minuses – in this article.

Voltage stabilizers allow maintaining the level of voltage in the room so that the jumps that can reach several tens of volts do not have a negative effect on electrical appliances. Depending on the type, specialization and conditions of application, the device can cost 4000-6000 rubles. Stabilizers are industrial and domestic, electromechanical, relay, symistor, double transformation and with latitudinal modulation.

Voltage stabilizers allow you to increase the service life of incandescent and household lamps 2-3 times, increase the overall equipment of the equipment, and also ensures normal operation of devices during voltage surges in a range of 180-220 volts.

Of the minuses of stabilizers, we note their relatively high cost, impressive dimensions and the need for maintenance, which requires installing the device in a convenient place. In addition, stabilizers need to be cooled periodically, they are noisy, sensitive to dust, moisture and various electrophenomena.

Control relay is a device that is mounted in an electrical panel and works only at the time of a sharp voltage jump. It turns off the network for a few seconds, after which it turns on it again. The shutdown intervals can be adjusted by adjusting to a particular device or equipment. Up to 6 relay can be installed at the same time.

These devices are inexpensive (400-800 rubles), unpretentious in maintenance, are reliable and do not take up much space. At the same time, lasting voltage drops make the relay turn on and turn off, which is not very pleasant for the inhabitants of the room.

The best option is a combination of stabilizers and voltage relay, but without eliminating the cause of the differences, you can not do. Only an electrician can determine and eliminate the causes.