The winter solstice is one of the most important days of the year, a day for family togetherness. On this day, people in the northern part of China will eat dumplings, and there is a saying that references this custom. People in southern China will make and eat tangyuan, or rice dumplings, to symbol......

When we use the voltage stabilizer, some users, in order to protect the safety of the circuit, when using the voltage stabilizer, add a leakage protection switch to the input end of the voltage stabilizer. When the voltage stabilizer is started,

UPS uninterruptible power supply is an important external device that can provide continuous, stable and uninterrupted power supply. It is also a power electronic device that integrates digital and analog circuits, automatic control inverters and maintenance-free energy storage devices.

There are at least nine kinds of problems in the power grid: power outages, lightning spikes, surges, frequency fluctuations, voltage sudden changes, voltage fluctuations, frequency drift, voltage drops, and pulse interference. Therefore, from the perspective of improving power quality, it is necess......

Dry type transformers are widely used in local lighting, high-rise buildings, airports, terminal CNC machinery equipment and other places. Simply put, dry type transformers refer to transformers whose cores and windings are not immersed in insulating oil. Cooling methods are divided into natural ai......