The operability of the most various type of the equipment depends on right choice of regulated power supply: computers, amplifiers, printers, home theaters, etc. Use of stabilizers – not only guarantee of qualitative power voltage, but also guarantee of reliable protection of expensive electronics.
Before buying the stabilizer (in a different way regulated power supply) it is reasonable to make sure of its need. For this purpose it is necessary to measure tension in household network (linear, phase). Measurements need to be done 3-4 times a day within at least 3 days. If for this term the linear stress went beyond value 205B (down) and 235B (up), and phase fluctuated within 195-245B, then acquisition of the stabilizer in this case is extremely desirable.
How to choose the stabilizer
There are two types of stabilizers. The first version – electromechanical, is considered outdated and in practice meets in few places. In similar designs the voltage control happens by means of the transformer, the electric motor. Electromechanical devices are characterized by the accuracy of maintenance of value of voltage output, low cost. The wear of mobile mechanical parts, noise of the working electric motor belongs to minuses.
Today the electronic stabilized sources are most widespread. Voltage variation in them to rated value happens by means of the autotransformer in which the electronic block switches windings. As work elements of electronics thyristors, the relay, and recently – chips are used. The main plus of the electronic device – adjustment speed (up to 20-40 milliseconds), plus the long term of operation.
How to choose device power
At first it is necessary to learn stabilizer power from technical documentation. When calculating it is necessary to count the total power of the connected devices, – it should not be more than the power of the source of the stabilized tension. It is also important to consider that when falling input voltage to admissible minimum (for example, to 135B) the stabilizer will be able to provide smaller power. One more moment – starting power. At the time of start-up some household appliances equipped with the compressor or engines consume capacities in 3-5 times more stated in technical data sheet.
Technical characteristics
When choosing energy source look at such parameter as stabilization coefficient. If it is supposed to use the stabilizer for connection of household appliances (washing machine, the fridge, the Microwave oven, the TV, etc.), then stabilization accuracy in 5-7% suffices. For power supply of the high-precision equipment (for example, medical devices, the computer) the accuracy of stabilization needs to be increased.