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RVDT (Rotary variable differential transformer or transducer) simple explanation. By Yuvi - Study Point

Hey everyone, today we are going to simply learn about RVDT (Rotary variable differential transformer).
So, without wasting any time lets get started.

  • RVDT is a passive transducer which means it requires an external power source. Its designing is same as like LVDT (Linear variable differential transformer o transducer) but the main dissimilarity is that RVDT has a cam-type core or we can say rotary ferromagnetic core which means the shape of the core is different because LVDT consists or employs flexible iron core for displacement.  
  • And by the help of shaft, this core will turn or rotate among the two windings of the transformer.
  • The shape of an RVDT is cam-shaped.
  • Three conditions which occur is RVDT is ~
*when the core or shaft is placed at the null position then the induced e.m.f in secondary windings are similar as well as revers in phase.
E0 = E1- E2 = 0

*When the core rotates in a clockwise direction, in this the more section of the core will enter across the primary winding which means the e.m.f across the primary winding is higher than secondary winding.

E0 = E1- E2 = (+)ve (positive)

*When the core rotates in an anti-clockwise direction then the more section of the core will enter across the secondary winding which means that the induced e.m.f across secondary coil is higher than that of the primary coil.  

E0 = E1 - E2 = (-)ve (negative)

  •  In this video, I have explained the RVDT (rotary variable differential transformer or transducer) topic with diagram (full explanation).



{ Please go and check out this video and my channel.
In this lecture video, I have explained RVDT (Rotary variable differential transformer) properly in an easy or simple way with its important three conditions. }

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