Knowledge

Power supply quality refers to power quality and power supply reliability. If the quality of the power supply is not up to standard, the performance of the electrical equipment wil

The working voltage of each light-emitting diode of household LED lights is distinguished by the color of the light： Generally, the working voltage of white, green and blue LED lam

Since the beginning of 3G construction, the issue of base station radiation has been widely discussed. Frequent community protests in the media and news prevent operators from inst

1. Different interface. The switch has no WAN port, and the router has at least one WAN port. The switch has multiple LAN ports (5-48), and the router generally has only 1~8 LANK p

When the charger isn't charging, do you stay plugged in, or do you unplug it? Recently, the reporter conducted a survey on this, in which more than half of the respondents said

In order to save energy and protect the environment, we need to know which devices in the home are also consuming electricity when they are not working, find the problem, and solve

The charging voltage of many small electric vehicles is not large, such as electric bicycles, and balance vehicles. The voltage of electric vehicles is generally 48V, 60V, and 72V.

Is there any difference in the color and diameter of the neutral wire and the ground wire? How to judge the zero wire and the ground wire in an irregular line place? If the neutral

Many families will use dual power supplies. At this time, a simple device is needed to realize the automatic switching of the two power supplies. For example, there are frequent po

There are many communication methods in the industrial field, so each communication method corresponds to a communication protocol. Among them, Modbus communication is a commonly u

1. The switch has only two terminals. This is a single switch. As long as it is connected in series to the live wire, the light bulb can be turned on or off. 2. The two contacts on

The three-way switch wiring method is also very common, and we often use it in our daily life. For example, in the bedroom, it is used more between the upper and lower stairs. For