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Glossary

Glossary

AC (Alternating Current)

A type of electrical current that moves in two directions, cycling (alternating) back and forth from a negative polarity to a positive one, and back again. Unlike DC current, AC can be “stepped up” to a much higher voltage for efficient long distance transmission, and then “stepped down” again for safe use in devices. Many devices use DC circuits internally, so the AC current from a common wall outlet needs to be transformed to DC before being delivered to the device’s electronics.

See also [DC (Direct Current)]


Actuator

A mechanism used to translate an energy source (such as electricity, air, or a fluid) into motion for purposes of moving part of a device (such as a mechanical arm, leg, or wheel on a robot). The most common forms of actuators in small robotics are the DC (Direct Current) motor and the servo motor.

See also [DC (Direct Current)]
See also [Effector (End Effector)]
See also [Servo Motor]



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