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FAQ

Is the motor of an electric tool the alternating current motor or the direct current motor?
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.
What's the role of carbon brushes in electric tools?
Changing the direction of the current (in the commutator motor brush, also plays a role reversal)
What devices must be available for all hand held electric tools?
Anti leakage, splash prevention, anti movement, anti overheating
What power tools do you need for carpentry?
Woodworking power tools are woodworking tools that rely on electrical energy as a basic source of energy, and non electrical energy does not belong to power tools;
What's the difference between a flashlight and an electric screwdriver?
Equipped with torque regulation and restriction mechanism, electric tool for screwing and unscrewing screws, the electric tool, mainly used for assembly line. Is one of the necessary tools for most manufacturing enterprises.
How are the I, II, and III classes of power tools classified?
In accordance with the electric shock protection methods, electrical equipment is divided into the following 4 categories:0 category. The device relies solely on basic insulation to prevent electric shocks. There are no ground terminals on the live conductors of the 0 types of equipment.
Why hand grinding sand turbine, electric drill, impact drill and other power tools plug is two, plug is not three plug
Each of these devices has a "back" logo indicating double insulation protection, and the double insulated layer forms insulation protection between the outer shell and the inner part of the tool, thereby preventing the occurrence of electric shock. So no three plug in,
What kind of power tools are hand drills? 1, 2 or 3?
You can see the cable plug, the aluminum shell is inserted three I tools, is grounded, the aluminum shell and some II tools, because it has a plastic insulation between the stator and the aluminum shell, so it is the installation of two wire plug.