Fluxgate: Tuned vs. Untuned Output
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článek z tištěného periodikaAuthor
Ripka, Pavel
Billingsley, S.W.
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© 1998 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.Metadata
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Fluxgate voltage output contains information about the measured DC magnetic field in amplitude of even harmonic components. Tuning the sensor output causes the concentration of output energy to specific harmonics (usually 2f) and parametric amplification. A short-circuited output current fluxgate cannot be tuned, but it in principle requires less turns of the pick-up coil. The noise measurements performed on amorphous ring-core sensors show no significant difference between current-output and tuned voltage-output, and higher noise level for untuned voltage-output.
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