What is the principle of charger?

The charger is actually composed of a stable power supply (mainly a regulated power supply, which provides stable working voltage and sufficient current) and necessary control circuits such as constant current, voltage limiting, time limiting and overshoot.

For the output parameters marked on the original charger (referring to the line charger), such as output 4.4V/ 1A and output 5.9V/400mA, refer to the relevant parameters of the internal regulated power supply. For example, 4.4V output can be used for 4.5V equipment, and 5.9V output can be used for 6V equipment.

Extended data

Maintenance method

1, waterproof and moistureproof. As an electronic product, careless water entry or long-term exposure to humid air will cause different degrees of corrosion or oxidation of electronic components inside it.

2, anti-fall, anti-impact. The mobile phone charger is actually a fragile part, and the internal parts can't stand it. In particular, it is necessary to prevent accidental landing during use. Do not throw, knock or shake the charger. Rough handling of the charger will damage the internal circuit board.

3. Strong chemicals. Do not use chemicals, detergents or strong detergents to clean the charger. To remove the stains on the appearance of the charger, cotton can be scrubbed with a small amount of anhydrous alcohol.

4. Electrostatic discharge during cleaning. Clean the charger and charging interface regularly. When cleaning, please use a wet cloth or an antistatic cloth. Never use dry cloth (electrostatic charge).

Baidu encyclopedia-charger