What are the common lightning protection equipment in the equipment room?

Lightning strikes can produce different forms of damage. The International Electrotechnical Commission has called lightning disasters "a major public hazard in the electronic age." Instantaneous overvoltages such as lightning strikes, induced lightning strikes, and power spikes have

January 14 Shenyang Steel Market Price Quotes

The product name specification material steel factory/origin price (yuan/ton) is higher than yesterday's last week than the previous month General line Φ6.5mm Q235 Tonghua steel 4300 0 0 -160 General line Φ6.5mm Q235 Siping red mouth 4270 0 0 -160 High line Φ6.5mm Q235 Tong Steel

How IP cameras work

Each IP network camera has its own IPwang address, data processing function, and built-in application software. It can be used as a web server, FTP server, FTP client, and mail client. Many advanced IP network cameras also include special functions. , Such as motion detection, alarm signal ou

Principle of infrared camera

Monitoring principle of infrared camera
Infrared camera is a camera device that integrates a camera, a protective cover, an infrared lamp, and a power supply and cooling unit. The basic principle of night vision is to use ordinary CCD black and white cameras to fe

peo power supply

The principle of the last POE power supply via cable, many friends asked me privately what is the power supply method of PoE equipment? Today, let's talk about the power supply method of PoE equipment!
According to the definition of the 802.3af / at standard, the PoE power