Machine-translated by Google. Questions are authored in English.
Top

Discussion

True or false: an LVDT requires a direct voltage excitation.

  • A.True, since the output is a direct voltage proportional to displacement
  • B.False, it is a transformer and needs alternating excitation
  • C.True, the two secondaries being connected in opposition across it
  • D.True, provided the core is of a laminated magnetic material

Answer: B

It is a transformer and needs an alternating excitation, typically a few kilohertz, so that the coupling to the secondaries can induce anything at all. A phase-sensitive detector then converts the output to a signed direct voltage.

No comment is present. Be the first to comment.
Loading…

Post your comment

Please log in or register to post a comment.