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How to choose a suitable power adapter in three steps?

How to choose a suitable power adapter in three steps?

As the functions of smart devices continue to increase, their power consumptionbegins to get faster and faster. People are getting used to carrying portable chargers or power adapters with them. For many people, the concept of power adapter only stays at the stage of charger, but in fact, power adapter is a kind of transformer, which is widely used in charger. People who are not familiar with power adapters often have to face which power adapter is used for charging.

The parameters of the power adapter are various, so the adapter cannot be used for charging at will. Before choosing a power adapter, first determine three adaptation conditions.

First, the interface of the adapter matches the device;

Second, the output voltage must be the same as the rated input voltage of the load (mobile equipment), or within the voltage range that the load (mobile equipment) can withstand, otherwise, the load (mobile equipment) may be burned;

Third, the output current of the power adapter should be equal to or greater than the current of the load (mobile device) to provide sufficient power;

Let’s analyze the above three adaptation conditions.

First, the unmatched interface must not be inserted indiscriminately without professional knowledge, otherwise it will be dangerous.

Second, as to why the voltage is required to be consistent, the principle is this-the voltage is insufficient to drive the load, and the battery cannot be charged normally. The popular point is that supply exceeds demand.

Third, as to why such a current configuration is needed, it involves the principle of the circuit. Everyone knows that the power supply has internal resistance. The greater the internal resistance, the greater the loss. Therefore, when the manufacturer produces this adapter, it will determine the no-load output voltage within a certain range according to the internal resistance, and the current critical value corresponding to the voltage critical value is the nominal current value we see. It means that the adapter has better loading capacity. Therefore, choosing a slightly larger current adapter will not harm the battery, but will make the charging faster.

If you have any purchase plan for power supply or power charger, please feel free to contact us.

Shenzhen Penghcu Industial Co.,Ltd.