What is weak current?

Weak current generally refers to DC circuits or audio, video lines, network lines and telephone lines, and the DC voltage is generally within 32V.

Strong electricity is a kind of power electricity, and weak electricity is a kind of signal electricity. Weak current is used for information transmission. Telephone, computer, TV signal input (cable TV line), audio equipment (output line) and other electrical appliances in household appliances are all weak current electrical equipment.

Introduction of weak current

According to the intensity of power transmission, power applications can be divided into two categories: strong electricity and weak electricity. Building and building electricity generally refers to high-voltage alternating current above 220 V and 50 Hz. It mainly provides people with electric energy and converts it into other energy sources, such as air conditioning electricity, lighting electricity, power electricity and so on.

Weak current system is mainly aimed at buildings, including buildings, residential areas, airports, docks, railways, highways and so on. Common weak current systems include: CCTV monitoring system, burglar alarm system, entrance guard system, electronic patrol system, parking lot management system, visual intercom system, home intelligent system and security system, background music system, LED display system, etc.

Plasma splicing screen system, DLP large screen system, three-meter cc system, building automation system, lightning protection grounding system, paging intercom and professional intercom system, weak current pipeline system, UPS uninterrupted power supply system, computer room system, integrated wiring system, computer local area network system, property management system and so on.

Reference to the above content: quickly understand the encyclopedia-what is weak current?