Is the motor of an electric tool the alternating current motor or the direct current motor?
AC motor has become the most common motor because of the great development of AC power system.
The series motor is usually used. The series motor is connected in series because the stator and rotor windings are connected together, so when the current is reversed, the magnetic field is reversed, so the torque direction remains the same. However, according to this principle, the motor works at 180 degrees after the torque is gone, so even the AC motor, but also need to reverse, in order to work like a DC motor.The rectifier also needs to be rectified if it is operated under the direct current. The rectifier bridge is very small. On the circuit board, there are four diodes close together, mostly rectifier bridge
Compared to the AC motor and DC motor, because there is no commutator (see DC motor commutation), therefore has the advantages of simple structure, convenient manufacture, relatively strong, easy to make high speed motor, high voltage, high current, large capacity. The coverage of AC motor power greatly, from a few watts to several 101000 watts, even millions of kilowatts.
To be exact, they are generally series motors, so they are alternating current motors. The direct current motor is usually used as charging tool and driven by DC motor. Also useful for three-phase motors, such as concrete vibrators, are three-phase motors.If it is DC power supply, must have rectifier power ah, because the power supply is 220V AC, must be rectified into DC to use.
The motor of a general electric tool is an alternating current motor.
