Is the motor for general electric tools ac motor or dc motor?
Portable single-phase electric tool machine is series motor, more general application for alternating current (ac), but also runs on direct current series motor, the direct current (dc) will run according to the power supply is negative connection it is also different.
In general, it is a series of motor, so it is ac motor. Dc motor is used to drive the charging tool using dc motor. And the three-phase machine, like the concrete vibrator, is a three-phase machine. If it is a direct current supply, there must be a rectifier power supply, because the power supply is 220V, which must be fully dc to be used. The commutator, it is recommended that you baidu, because this is involved in the electric road map and so on, and some basic knowledge of the motor, which is not difficult to do.
The general electric motor is ac motor. Ac motor has become the most commonly used electric motor due to the huge development of ac power system. Compared to the ac motor and dc motor, with no commutator (see dc motor commutator), so the simple structure, easy fabrication, quite strong, easy to make a high speed, high voltage, high current, the large capacity motor. Ac motor power covers a wide range, ranging from a few watts to several hundred thousand kilowatts and even a million kilowatts.
