Power windows ONLY run on DC current.
They provide DC power or current to run dc products.
AC Power is Alternating Current whereas DC Power is Direct Current.
A DC power supply supplies directional current in an electric motor. This is significant because many motors run on directional current, or DC power; it's easier to convert to kinetic energy than alternating current (AC), which is generally used to transmit power over long distances.
AC servomotors require an alternating current as a power source, meaning they need to be plugged into an outlet, while DC servomotors require a direct current as a power source, meaning they can be run off of battery power.
DC Power is Direct Current Power Supply.
AC
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If the power tool has brushes to bring the current to the armature it is classed as an universal motor. It will run on DC as long as the voltage is the same potential. On a welding machine the 120 volt receptacle is a DC output and the grinders, drills, etc that are plugged into it work fine.
The alternator generates power to run the car and charge the battery. An alternator in a vehicle generates Alternate Current (AC) instead of Direct Current (DC) electricity to power the vehicle.
Motors work on both DC and AC. It depends on their design.
The power supply in most cars is DC. The alternator may produce AC power, but it is then run through a rectifier, providing DC power.
Bushes, with reference to DC motors is a brushed DC motor which is a motor that designed to run from a direct current (DC) power source. This type of motor is an internally committed electric motor.