Many people think that batteries are the source of power for cars. Actually not. The generator is the real source of power in the car. When the engine is working normally, the output voltage of the generator is higher than the voltage of the car battery. The generator supplies power to all powered devices (except the starter) while charging the battery; and the battery is stored internally only when the engine is started. Electricity drives the starter to work. The generator and voltage regulator, battery, charging indicator and related wires together form the power system of the car.

1. Generator
   Generators are the main source of power for automotive electrical equipment. During the normal operation of the vehicle, the generator provides power to other powered devices other than the starter and charges the battery. Most generators used in automobiles are silicon-rectified three-phase alternators, which use silicon diodes as rectifiers to convert alternating current to direct current.
2. Battery
   The battery is what we call the battery. It is the largest electrical equipment in a car. Many people think that this is the power source of the car, but this is not the case. Its main function is to supply power to the main electrical equipment (such as the starter and ignition system) when the engine is started; to supply power to various electrical equipment when the engine is not running or running at low speed; when the power supply capacity of the generator is exceeded, the battery will Assist the generator to supply power to various electrical equipment; in addition, the battery also has the function of stabilizing the voltage of the power supply system, which is equivalent to a large capacitor, which can absorb the instantaneous overvoltage in the circuit for protection. Electronic equipment.
3. Voltage regulator
   The output voltage of the generator increases as the engine speed increases. If the voltage is too high, it will burn the car's electrical system. The function of the voltage regulator is to adjust the output voltage of the generator so that the output voltage of the generator remains between 13.8-14.4 volts. Today, most engine voltage regulators are integrated inside the generator, with only a small part outside.
4. Charging indicator system
   A voltmeter or charging indicator is set in the car instrument to indicate whether the generator is working normally. The driver should pay attention to these instruments while driving. If the charging indicator on the meter is on or the voltmeter pointer is lower than 24V, it means that the charging system is not charging or the charging capacity is too low.
   Quickly start the manufacturer to solve the key parts of the car, making you and the car closer

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