PSN-L Email List Message

Subject: Re: VRDT vane
From: barry lotz gbl@.......
Date: Fri, 21 Jan 2000 19:23:10 -0800

Sean Thomas
   Thanks for the clarification on the vane. I have been using lvdts with on
end of both the primary and secondary coils attached to ground. I think because
of this the core had to be isolated from ground. I haven't noticed any
particular problems and the calibration was quite linear. I did this by
providing a acrylic tube break in the core brass extension shaft. I think if I
provided a floating excititation and output condition I would have been able to
ground the lvdt core. I will try this condition when I receive the transformers
from Mouser next week and construct the vrdt


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Larry Cochrane <cochrane@..............>