source:Industry News Popular:adapter release time:2022-02-24 09:22:22 Article author:sznbone
Is the power adapter a switching power supply? What is the difference between the two? Power adapters and switching power supplies often have many customers. These two are confused, and they are not well differentiated. Now Wentong Electronics editor will compare the differences between the two, and I hope it will help you.
1. Features:
The characteristics of the power adapter are: a power converter (both AC to DC), which converts alternating current to direct current, and then passes through the computer. It can protect the computer in the event of a power outage.
The characteristics of the switching power supply are: high-speed pass-through and cut-off by controlling the switch tube through the circuit. The direct current is converted into high-frequency alternating current and supplied to the transformer for transformation, and then the required one or more sets of voltages are generated! Turn to high The reason for the high-frequency alternating current is that the power of high-frequency alternating current in the transformer transformer circuit is much higher than 50HZ. Therefore, the switching transformer can do very small, and the operation is not very hot!! The cost is very low. If you do not change 50HZ to high The switching power supply is meaningless.
Both switching power supplies and adapters are switching power supplies, which are composed of high-frequency switching tubes and their control circuits. The power adapter is a regulated switching power supply, and the switching power supply has a floating charging function.
2. Differences:
Switching power supplies are a large category. The power adapter belongs to the switching power supply.
3. Working principle:
In reality, most of the power adapters we come into contact with are switching power supplies. Switching power supply refers to a power supply that controls the timing ratio of switching on and off to maintain a stable output voltage through modern electronic technology. The switching power supply of a power adapter is generally composed of a pulse width modulation (PWM) control IC and a MOSFET. The conversion power is high, the volume is small, and it can work in a wide voltage range.
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