Alternating current 2200W chain saw

Ac-dc power supply principle of electric chainsaw

First, the working principle of the electric chain saw

Electric chainsaw is a kind of power tool that cuts by driving the saw blade, which is often used for cutting materials such as wood, metal and plastic. Its working principle is to drive the rotor of the motor to rotate by alternating positive and negative half weeks of the input power supply, and drive the saw blade to cut. In the traditional electric chainsaw, AC power is usually used. However, in recent years, with the continuous development of DC power technology, more and more electric chainsaws also use DC power.

Second, the difference between AC power and DC power

The biggest difference between AC power and DC power is the direction of current. The current of the AC power supply changes direction periodically, while the current of the DC power supply always flows in the same direction. In addition, the two different types of power supplies also differ in voltage and power characteristics. Ac power supplies usually have a high voltage and power, and are able to operate for a long time. Dc power supplies generally have lower voltage and power, and a shorter service life.

Third, the principle of electric saw can be AC and DC power supply

In the traditional AC chainsaw, the power transformer will adjust the voltage of the AC power supply to the operating voltage required by the electric chainsaw, and then rectify the rectifier circuit to convert the AC into direct current. In the electric chainsaw with DC power supply, the power transformer directly regulates the AC voltage to the required DC operating voltage without the need for conversion through the rectifier circuit.

In addition, the motor of the electric chainsaw also needs to be able to adapt to different types of power supplies. When using AC power, the motor needs to have sufficient inductance and capacitance to balance the speed and power output of the rotor. When using DC power, the motor needs to have better electrical characteristics and circuit control technology to give full play to the advantages of DC power.

Fourth, the performance of the electric chain saw under different circuit conditions

The performance of the electric chainsaw under different circuit conditions is affected by the type of power supply and the characteristics of the motor. Under the same power and voltage conditions, AC power supplies can usually provide higher starting power and torque, but produce larger electromagnetic interference. The DC power supply has better speed adjustment performance and accuracy, but the requirements for the motor are higher and the cost is higher.

In summary, the principle that the electric chainsaw can AC and DC power supply lies in the adjustment of the power transformer and the adaptability of the motor. Under different circuit conditions, the characteristics of the electric chainsaw are also different. Therefore, when choosing an electric chainsaw, it is necessary to take into account the required cutting materials and working conditions to choose the appropriate power supply type and motor type.