ニュース
AC 電源と DC 電源の見分け方
著者： ZYGパワーモジュール Time： 2023-4-22
序章
Power supplies are essential components in many electronic devices. They convert the input voltage into the required voltage, current, and frequency to operate the device efficiently. There are two types of power supplies – AC and DC. AC stands for alternating current, while DC stands for direct current. In this article, we will differentiate between an AC and DC power supply.
AC Power Supply
An AC power supply is a type of power supply that receives alternating current as input and delivers alternating current as output. AC power supplies are commonly used in households and businesses as they are the standard for power supply from utility companies. They operate at a frequency of 50 or 60 Hz, depending on the country.
One of the essential components of an AC power supply is a transformer. The transformer is responsible for changing the voltage level and isolating the input and output. The voltage level of an AC power supply is typically 120 or 240 volts, depending on the country. The output of an AC power supply is typically sinusoidal, meaning that it changes polarity and direction periodically.
DC Power Supply
A DC power supply is a type of power supply that receives direct current as input and delivers direct current as output. DC power supplies are commonly used in electronic devices such as laptops, smartphones, and LED lights. They operate at a frequency of 0 Hz, meaning that the voltage level remains constant.
One of the essential components of a DC power supply is a rectifier. The rectifier is responsible for converting the input voltage from AC to DC. The voltage level of a DC power supply is typically 5, 12, or 24 volts, depending on the device’s requirements. The output of a DC power supply is typically a straight line, indicating a constant voltage level.
Differences between AC and DC Power Supply
The primary difference between AC and DC power supplies is the type of current they receive and deliver. AC power supplies receive and deliver alternating current, while DC power supplies receive and deliver direct current. The frequency of AC power supplies is typically 50 or 60 Hz, while the frequency of DC power supplies is 0 Hz.
Another difference between AC and DC power supplies is the voltage level they operate at. AC power supplies typically operate at 120 or 240 volts, while DC power supplies typically operate at 5, 12, or 24 volts.
The waveform of AC and DC power supplies is also different. AC power supplies output a sinusoidal waveform, while DC power supplies output a straight line waveform.
結論
In conclusion, AC and DC power supplies are two different types of power supplies that receive and deliver different types of current. AC power supplies receive and deliver alternating current, while DC power supplies receive and deliver direct current. They also operate at different voltage levels and produce different waveforms. Understanding the differences between AC and DC power supplies can help you select the right power supply for your device.
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