letter a

AC Drive An electronic device used to control the speed of an AC motor.
Also called a variable frequency drive and an inverter. The term
variable speed drive applies to both AC Drives and DC Drives.

AC Motor A motor that uses alternating current to convert electrical
energy into mechanical energy. Many AC motors used in
industrial applications are three-phase induction motors.

Alternating Current (AC) Current that periodically reverses direction.

Ambient Temperature The temperature of the medium (air, water, etc.) surrounding a
device.