Talk:Rotary variable differential transformer

Remove stub tab - Discussion Onionmon 22:04, 5 October 2006 (UTC)

Needs work

Far too much theory, and no pictures. --John Nagle (talk) 06:33, 1 July 2008 (UTC)

Agreed. A picture would be helpful. Jace 18:54, 20 November 2009 (UTC) —Preceding unsigned comment added by Justus87 (talk • contribs)

Also the formulas are not consistent. For instance the first one uses G/C as the factor to multiply by voltage difference to get angle, but the second one uses G to multiply by the angle to produce the voltage difference. And the second formula has the plus-or-minus sign but none of the others do. Fathead99 (talk) 09:18, 5 March 2010 (UTC)

Transducer vs. Transformer?

My understanding is that a transducer is used to convert motion into signal whereas a transformer usually does not. Typically a transformer is a static device (say on an electrical pole) that steps voltage up or down depending upon whether it is on the supply side or the receiving side of a distribution network. An RVDT uses the principle of a transformer, but in a variable sense. Actually in a differential variable sense. That's how it senses the change in position of the rotary device, but the primary purpose is not to change the voltage. The primary purpose is to sense the rotary position.

Here's a reference that calls the RVDT a Rotary Variable Differential Transducer: Aeroservoelastic Testing Of A Sidewall Mounted Free Flying Wind-Tunnel Model

There's been some switching back and forth, and then redundant phraseology. An RVDT is a transducer that uses the principle of a differential transformer in order to work. Is there a parts catalog that lists it primarily as a transformer rather than as a transducer?

PoqVaUSA (talk) 07:37, 30 September 2011 (UTC)

Here's a better reference, a catalog entry:

Measurement Specialties, Inc. - RVDT Angular Position Transducer RSYN Series

PoqVaUSA (talk) 08:01, 4 October 2011 (UTC)