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2023
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Common types and specifications of power cords
A power cord is a wire that transmits current. The usual method of current transmission is point-to-point transmission. Power cords can be divided into AC AC power cords and DC DC power cords according to their purpose. Usually, AC power cords are made of wire with higher voltage AC power. Due to the higher voltage, these types of wires require a unified standard to obtain safety certification before they can be officially produced. And the DC line is basically passed through lower voltage DC power, so the safety requirements are not as strict as AC lines.
1、 AC power cord
The AC power cord is mainly used in industries such as mice, keyboards, videos, scanners, cameras, televisions, video grabbing boxes, speakers, mobile phones, audio systems, digital cameras, MP3, MP4, game consoles, etc. Its general specifications and characteristics are as follows:
Output voltage: 220V, 380V
2、 DC power cord
DC power cables are generally used to connect power supplies and electronic devices, and their general specifications and characteristics are as follows:
Output voltage: several common voltages such as 30V, 6.0V, 90V, 12V, etc
The difference between AC power cord and DC power cord:
1. Current direction is different: AC flows out in two directions and then back again, constantly changing. Frequency represents the speed at which the direction of AC changes, while phase represents the starting time of AC transmission. In fact, DC has only one direction, meaning that current can only flow from the positive pole to the negative pole.
2. Different uses: Common electric lights, motors, etc. in our daily lives all use AC power; Direct current is mainly used in various electronic instruments, electrolysis, electroplating, and other fields.
3. Different input wiring: When AC input is used, the wiring can be non polar, while when DC input is used, the wiring must distinguish between positive and negative poles.
4. Frequency difference: AC power parameters need to list the frequency, such as 50HZ. Usually, DC power lines do not have frequency parameters.
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