Do UPS power supplies and stabilizers have the same function?

Are stabilizers and UPS power supplies the same in function? With the increasing number of electrical devices on the market, stabilizers and UPS power supplies are widely used, and many people believe that they can replace each other. But there is a difference between stabilizers and UPS power supplies, and many people always mistakenly believe that stabilizers are UPS. The following introduces the differences between stabilizers and UPS power supplies from several aspects.

A.  Are stabilizers and UPS power supplies the same in function?

(1) UPS power supply

UPS power supply is divided into online UPS power supply and backup UPS power supply. Generally, home computers are equipped with backup UPS power supply, which is a type of backup power supply; The backup type is equipped with a voltage stabilizing part and uses a relay shifting voltage stabilizing method. The voltage stabilizing effect is very poor and cannot be considered a stabilizer. 

The Chinese name for UPS power supply is uninterruptible power supply. From the name, it can be seen that it is actually a reserve power supply. When there is a power outage, the stored electrical energy through the battery is inverted and output as AC current to power the equipment. Moreover, the time interval between switching from the host to the backup power supply usually does not exceed 10 milliseconds, so power outages have almost no impact on the electrical equipment. 

(2) Stabilizer

It is designed for the unstable voltage of the power grid, mainly for the protection of backend equipment, and has relatively complete equipment protection functions. Generally, large UPS power supplies must also be equipped with a voltage stabilizing bypass system (stabilizer), which has a wide range of functions and can be used in almost all places where electricity is needed (provided that the voltage is unstable). 

The stabilizer consists of a voltage regulating circuit, a control circuit, and a servo motor. When the input voltage or load changes, the control circuit samples, compares, amplifies, and then drives the servo motor to rotate, causing the position of the voltage regulator carbon brush to change. By automatically adjusting the coil turns ratio, the output voltage is maintained stable.

B.  Function of stabilizer:

1. Can stabilize the voltage of low voltage 125V-165V or high voltage 250V-270V between 200-230V, so that household appliances can work normally; 

2. When the input voltage is higher than 255-275V or lower than 125-160V, the power can be automatically cut off; 

3. When the power suddenly comes back in after a power outage, you can delay starting the output power for 5-8 minutes to avoid damage to the appliance due to high voltage. When choosing a household stabilizer, it is important to pay attention to the completeness of the three basic functions mentioned above. 

A regulated power supply is mainly used to stabilize voltage, provide a stable electrical environment for electrical equipment, and protect electrical equipment from voltage fluctuations or interference. Due to its completely different functions from UPS power supply, and the fact that UPS power supply also comes with an energy storage battery, the price and cost are relatively high. 

Of course, it is reasonable for many people to mix regulated power supplies and UPS power supplies together, because some high-quality backup UPS power supplies do come with a stabilizing function, which is a type of electronic switch stabilizer that can be used as a stabilizer. However, the stabilizing effect and accuracy are not as ideal as specialized stabilizers. 

C.  What is the difference between a stabilizer and a UPS power supply? 

UPS power supply is like an emergency power source, which can be connected to the mains power supply, acting as an AC mains stabilizer, and also charging the onboard battery. When the mains power is interrupted, UPS will continue to supply 220V AC power to the load through inverter conversion of the internal battery energy, ensuring that the servers in the data center will not be powered off. 

A regulated power supply cannot provide backup power for servers in the event of a power outage. It is only designed for unstable voltage and is mainly used to protect backend equipment. Its equipment protection function is relatively complete. In situations where the voltage is unstable and fluctuates, a regulated power supply can be used, but it will not provide power to the server. 

The above provides a brief introduction to the functions and differences between stabilizers and UPS power supplies. In fact, the biggest difference between the two is that stabilizers only stabilize voltage; UPS can not only stabilize the voltage, but also continue to supply power through battery inversion after a power outage, ensuring that the equipment does not lose power. 

In summary, a regulated power supply, also known as a stabilizer, is a completely different concept from a UPS power supply. Many people mistakenly consider stabilizers and UPS power supplies as the same product, but in reality, they are different, not only in terms of function, structure, or principle. So when making a purchase, you can choose according to your own actual situation and make sure to distinguish between them.