After the recent blackout in Spain, many people lost documents and jobs because their mac or other computer suddenly disconnected, without option to save anything, something that could have been avoided with a device like the one we will see today.
It is a SAIand although it is very common in computer science, few non -professional users know him, so we will see it in depth, so that if you want to avoid this in the future, you can, in a very simple and comfortable way.
What is a SAI and how a light cut avoids
This team works in a very simple way. Easy for everyone to understand, we could define it as an intermediate battery that is automatically activated when the current goes electric, keeping the devices connected for a short period of time.
That is, it would be like a battery to attach all the devices that connect to it, however, it will not be spent while there is energy, and it will only be activated if the light goes away, preventing the devices from turning off, due to the speed with which it acts.
Depending on what we want to spend, we can have more or less autonomy, although the most important thing is power Save and turn off the equipment safelysince keeping them on for hours is impossible, because they only last a certain time, since they are emergency systems, and not energy stations, which we could also buy, to have the complete pack.
In the same way, we will have to calculate the power consumed by the devices that we want to add to it, that is, if it is only for a Mac Mini or an IMAC, it may be with any economic one, however, if we also want to have the router, or an external screen, the consumption will be greater, and we will need something that endures everything.
| Model | We highlight | Price |
 Economic Sai |
650 VA, constant output voltage 360W |
|
 Sai Professional |
800A/480W with LCD screen |
* Updated prices at the time of publishing or reviewing this article. They can vary over time.
Inconveniences of the use of a SAI
There are cons that we must know, since not everything is as beautiful as it is painted, and depending on your needs, it could affect you more or less.
- Slow response time: When activating only when the current fails, there may be a small delay that affects sensitive equipment. It should not be common, but you have to take it into account.
- Limited protection: Do not correctly filter voltage variations or current peaks while there is electricity.
- Less battery life: If it is frequently activated by small interruptions, the battery wears out before, as if it were that of another device.
- Little efficiency with delicate equipment: Computers or servers can be restarted with only a few milliseconds of cutting, so it will be best to prove it before waiting for a real cut.
- Not suitable for critical environments: It is not recommended for hospitals, servers or data centers where any failure has serious consequences, and we must only have it as a home security measure.
If all this has been clear to you, you know how to prevent this document in Word that you had halfway be erased the next time there is a light cut without warning.
