G - Physics – 01 – L
Patent
G - Physics
01
L
73/69
G01L 1/14 (2006.01) G01L 1/12 (2006.01)
Patent
CA 1193469
- 14 - ABSTRACT OF THE DISCLOSURE A temperature-compensated magnetoelastic force trans- ducer is produced by mutually exciting a measuring trans- ducer and a reference transducer having cores of the same material and the same design and in good thermal contact. A spring loads the core of the reference trans- ducer with a constant force. The output signal of the reference transducer is rectified in a phase-sensitive rectifier, the output signal of which is compared with a constant reference voltage. The difference signal resulting from this comparison controls the phase position of the control voltage of the rectifier in such a way that the output signal of the rectifier is brought into agreement with the reference voltage. The output signal of the measuring transducer is also rectified in a phase- sensitive rectifier, which is controlled by said control voltage and the output signal of which constitutes the temperature-compensated measured signal.
424209
Asea Aktiebolag
Robic Robic & Associes/associates
LandOfFree
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