Comparison of power adapter and switching power supply

Issue Time:2006-10-23
1, characteristics:
The characteristics of the power adapter are: the power converter (AC to DC), from AC to DC, and then through the computer, it can not protect the computer, but there is a storage device (also called charger) in the computer, so Protect your computer in the event of a power outage.

The characteristics of the switching power supply are: high-speed switching and cut-off with a circuit-controlled switch. Converting DC power to high-frequency AC power is supplied to the transformer for voltage transformation, and then one or more sets of voltages are required to be generated! The reason for switching to high-frequency AC power is that the power of the high-frequency AC in the transformer transformer circuit is higher than 50HZ. Many. So the switching transformer can do very small, and the operation is not very hot!! The cost is very low. If you do not turn 50HZ into high frequency, then the switching power supply does not make sense.

Both the switching power supply and the adapter are switching power supplies, which are composed of a high frequency switching tube and its control circuit. The power adapter is a regulated switching power supply, and the switching power supply has a floating charging function. The voltage becomes larger as the current becomes smaller. In the end, as long as the voltage is no current.

2, the difference:
Switching power supplies are a large class, and power adapters are attributed to switching power supplies.

3. Working principle:
In reality, most of the power adapters we are exposed to are switching power supplies. Switching power supply refers to a kind of power supply that controls the output voltage of the switch through modern electronic technology, and the switching power supply of the power adapter is generally composed of a pulse width modulation (PWM) control IC and a MOSFET. Advantages: High conversion power, small size, and ability to operate over a wide voltage range.

Shenzhen Lianyunda Electronics Co., Ltd., as a leader in the power industry, has the industry's high-power global authority certification, and masters the core of the technology of switching power supply, power adapter LED power charger manufacturer, Lianyunda power supply in manufacturing technology and In terms of production capacity, we are constantly pursuing improvement, strengthening and progress. Whether it is the product development quality, manufacturing quality, or customer service quality.

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