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Computer Security Resource Center

Computer Security
Resource Center

Glossary

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Alternating Current Drive

Acronym(s):

None

Definition(s):

None

Synonym(s):
Variable Frequency Drive
  A type of drive that controls the speed, but not the precise position, of a non-servo, AC motor by varying the frequency of the electricity going to that motor. VFDs are typically used for applications where speed and power are important, but precise positioning is not.
Source(s): NIST SP 800-82 Rev. 2
See Also:

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