I often see scammers boiling water with "hot fast" on the Internet and on the roadside, and plugging in the power-saving Queen's watch. Everyone feels that electricity is saved. In fact, they were fooled. They use a reactive power meter. The only useful place is to switch modes on time, such as turning off the data connection at night, which really saves electricity.
In fact, the power of this fluorescent lamp is very small, but it uses a large inductance ballast to increase the power-free, plug in the power-saving king and reduce the current. The national energy conservation and environmental protection now uses electronic ballasts, and the eliminated inductive ballasts are used to hide people's eyes and ears.
If the electronic ballast is equipped with an economizer, the current will not decrease, but will increase. The reason for the increase is that the economizer has electricity, so it doesn't save electricity at all.