1. What is weak current?
One of the characteristics of weak current is that the voltage is generally low. Generally speaking, the DC voltage is below 24 volts and the AC voltage is below 36 volts, so its frequency is relatively high and its current is relatively small. However, this feature cannot be identified as a weakness. For example, the router at home is used to connect the network cable, and its main function is to transmit signals. It is a standard weak current equipment. The router only needs 220 volts when it works, but it needs strong electricity to provide power.
Second, what is the difference between strong electricity and weak electricity?
1, the AC frequency is different. If it is weak current, the AC frequency is generally around 20 Hz, while the frequency of strong current can reach 50 Hz, which is for industrial use.
2, the transmission mode is also different, if it is strong electricity, generally speaking, it is wired transmission, and weak electricity transmission is divided into wired and wireless. If radio is selected, it is transmitted by electromagnetic waves.
3. Voltage and current are different. Generally speaking, the unit of calculation of strong current is ampere, but the unit of calculation of weak current is milliampere or microampere.
3. What are the weak household electricity?
1, except for the routers mentioned by Bian Xiao, they all use weak current. There is also a TV box, and the data cable connected to the TV is a weak wire.
2. If a camera is installed in the computer and connected to the computer, this line is also very weak.
3. Some families will install emergency lighting in the corridor. This kind of lighting itself belongs to high-voltage equipment, but if there is a power failure, it will automatically light up. At this point, it is a weak circuit used to transmit signals.
4. There is also a fingerprint lock, which transmits signals when fingerprints are recognized, and this part of the line that transmits signals also belongs to weak current lines, and so on. Access control and elevators are weak current lines.
Bian Xiao concluded: We distinguish weak electricity from strong electricity, and we can give full play to their different advantages. Nowadays, electricity is becoming more and more intelligent, and the scope of use of weak electricity is becoming more and more extensive.