The voltage change of the charger needs to be changed in the voltage regulator circuit of the charger.
The charger circuit is generally composed of AC\/DC conversion circuit, voltage regulator circuit and filter output circuit. The voltage regulator circuit determines the output value of the charger voltage. The voltage regulator circuit is generally composed of a voltage regulator integrated circuit and a voltage regulator adjusting resistor. If the adjustment value is not much different from the original value, the voltage regulator adjusting resistor can be directly adjusted to make the output reach the required value. If the adjusted value is much different from the original value, it is necessary to replace the voltage regulator integrated circuit, and then adjust the voltage regulator to adjust the resistance to make the output meet the requirements.
It is necessary to pay attention to circuit safety when adjusting, and it should be done by personnel with relevant working knowledge.
The charger is not allowed to change the voltage and current, because it is not safe for the equipment, so the original charger should be used.