The power adapter is a facility that can provide voltage conversion for electronic appliances and portable electronic devices. It has applications in various electrical appliances in our lives. It can convert the 220-volt high voltage in the home into general electronic products. The required stable low voltage enables electronic products to work normally.

Next adapter manufacturer Guangzhou seven up photoelectric co., LTD. Talk with you about the advantages of power adapter.

Advantage 1: small size and light weight.

The switching power adapter does not use a bulky power frequency transformer. Since the dissipation power on the switch MOS tube is greatly reduced, the larger heat sink is omitted. Due to these two reasons, the switching power adapter is small in size and light in weight.

Advantage two: low power consumption and high efficiency.

In the switching power supply adapter circuit, the switching MOS tube works alternately in the on-off and off-on switching states under the excitation of the excitation signal. The conversion speed is very fast, and the frequency is generally above 50kHz. In some advanced switching power supply circuits, it can be several hundred or nearly trillion Hz. This makes the power consumption of the switch MOS tube very small, and the efficiency of the power supply can be greatly improved, and its efficiency can reach 90%.

Advantage three: wide voltage range.

The output voltage of the switching power adapter is adjusted by the duty cycle of the excitation signal, and the change of the input signal voltage can be compensated by frequency modulation or width modulation. In this way, when the power frequency grid voltage changes greatly, it can still ensure a more stable output voltage. Therefore, the voltage regulation range of the switching power adapter is very wide, and the voltage regulation effect is very good. In addition, there are two methods for changing the duty ratio: a pulse width modulation type and a frequency modulation type. Switching regulated power supply not only has the advantages of a wide range of voltage regulation, but also has many methods to achieve voltage regulation. Designers can flexibly choose various types of switching power supply integrated circuit chip solutions according to the requirements of practical applications.

Power adapter advantages four: the efficiency of the filter is greatly improved, so that the capacity and volume of the filter capacitor is greatly reduced.

At present, the working frequency of the switching power adapter is basically working above 50kHz, which is more than 1000 times that of the linear regulated power adapter, which makes the rectified filtering efficiency almost increased by 1000 times; even if the half-wave rectifier is used, the efficiency is also increased by 500 times. Under the same ripple output voltage, when the switching power supply is used, the capacity of the filter capacitor is only 1/500~1/1000 of the filter capacitor in the linear regulated power supply.