The secret of the voltage in the socket|Power quality is not only a problem of no power outage

The electricity in the socket is the voltage, and it is alternating current, which provides the power required by all kinds of household appliances.
The ideal voltage waveform is a sine wave, but in fact, the voltage inside the socket will have a variety of different waveforms, which is called a voltage waveform anomaly.
Abnormal voltage waveforms include short-term voltage shortage, voltage shortage, surge voltage, surge voltage, noise, and frequency shift. The
quality of power is not whether there are frequent power outages, but the closer the voltage waveform is to the sine wave, the better, and the fewer abnormal waveforms there are.
If you need to improve the power quality, you can choose On-Line UPS.