What is the automobile generator regulator, why need the automobile generator regulator, what are the functions of the automobile generator regulator, the working principle of the generator regulator, and how to judge whether it is the problem of the automobile generator or the regulator itself?

What is automobile generator regulator

Regulating the power generation of automobile generator is called automobile generator regulator

Why do we need auto generator regulator

Because the speed of the automobile engine is not fixed, and the generator is driven by the engine, in order to make the electricity generated by the generator stable at about 14.0v, it is necessary to adjust the internal magnetic field current of the generator. When the speed is low, the current is large, when the speed is high, the current is small, so the generator can output voltage.

The function of automobile generator regulator

The main function of the automobile generator regulator is to control the output voltage of the generator within the rated value. Because the rotation number of the automobile generator is extremely unstable, the output voltage of the generator will also change with the change of the revolution. If the speed is high, the limiting voltage without regulator will exceed the rated value, which will damage the electrical equipment in the car.

Working principle of generator regulator (regulator terminal of 5 wires)

Of the five wire regulators, one is the power supply B of the regulator. Controlled by the ignition switch, it is equivalent to the induction line monitoring the generator's power generation size. If the voltage is high, the current from the regulator will be small, otherwise.

The second is the ground wire e, which is the most basic. For electrical appliances, there must be live wire and ground wire.

The third one is the neutral point n, which is connected with the neutral point terminal on the generator. When the generator is working normally, the voltage is half of the generating voltage, which is used to control the charging indicator.

The fourth line is the charging indicator line L. one end of the charging indicator lamp is turned on from the ignition switch and sent from the instrument power supply. Then it is connected to this line. It is grounded inside the regulator, and the charging indicator light is on. After the power is turned on, the voltage on the regulator L is increased by the electric control of the neutral point, and the two ends of the charging indicator light are almost the same, and the light goes out.

The fifth is the magnetic field F, which is also connected to the generator. It is this line that enables the generator to have a magnetic field current and generate electricity.

How to judge whether it is the problem of automobile generator or regulator itself

External detection: professional automobile electrician uses the multimeter voltage gear to measure the terminal voltage of the generator. If the voltage cannot reach 13V, the generator needs to be overhauled or replaced. If the measured voltage is constantly changing above 13.8V, and the voltage displayed by the multimeter is higher than the specified value when the engine speed increases, for example, when the voltage reaches more than 15V, it must be the matter of the voltage regulator Yes.

Internal inspection: after the generator itself is determined to be the problem, the automobile electrician uses professional instruments to measure the components of the generator, and other parts have no fault, which is the problem of the generator regulator.

Of course, different models and testing methods are also different, which will not be discussed here.