People who often deal with power cords know that power cords are different in color. Common colors include yellow, red, green, blue, and so on. Although many people also know that power cords are divided into colors, they do not know why they are divided into colors and what each color represents. Then the editor below will explain the meanings of common power cord colors.

　　Yellow: +12V

　　 Yellow is currently the most distributed power cord among all electrical appliances. It represents +12V, which is the most common current value. If the yellow power cord cannot be energized normally, it will damage the corresponding power cord and affect the normal use of the electrical appliance.

　　Blue: -12V

　　 The blue power cord corresponds to the yellow, it represents a negative 12 volt power supply. Generally, there are very few blue power cords in various electrical appliances, but once they exist, they cannot be removed, otherwise it will affect the normal operation of the machine and cause various losses.

　　Red: +5V

　　 The number of red power cords is similar to that of yellow power cords. It is one of the most important power cords in electrical appliances. It represents a positive 5 volt power supply. Generally, the power supply is the working voltage of each integrated circuit. As long as there is an integrated circuit in the electrical appliance, there will be a red power line near the integrated circuit.

　　White: -5V

　　The white power cord is relatively seldom used. It is the opposite of red, which means -5V. Generally, the white power line provides the judgment level for the logic circuit. The amount of current it passes through is very small and will not easily affect the normal operation of the system. It is basically optional.

　　 In addition to these four colors, the power cord has other colors, such as green and purple. As long as you understand the meaning of power cord colors in detail, you can know their various functions in electrical appliances.

Article from: http://www.elejintao.com/newsd-nid-60.html