Dusan Fefer

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To reduce the magnetic field of the Earth, 50 Hz electromagnetic interference and other magnetic disturbances when making precision magnetic measurements, we developed a system of the Helmholtz coils with an appropriate controller to compensate for the DC and AC magnetic field disturbances. The system generate an arbitrary magnetic field in any direction by(More)
Real-time blind separation of acoustic signals based on physical and geometrical properties of the sources of the signals Extended abstract. Blind signal separation is a technical problem of identifying separate sources from an acoustic mixture of signals. Efficient signal separation allows for development of various sensor systems to be used in clinical,(More)
− In this paper a Nuclear Magnetic Resonance magnetometer (NMR) in a form of a LabVIEW Virtual instrument (VI) is proposed. The heart of the magnetometer remains the marginal oscillator with a proton sample. The magnetic resonance signal and all other auxiliary signals are generated and controlled by a setup composed of a digital counter (for resonance(More)
Field coils are widely utilized in every precision measurement using stable reference magnetic fields. The basic property defined for any such coil is the coil-constant. It is a quotient of the generated magnetic flux density in the center of the coil and its energizing current. Field coils with a very accurately determined coil-constant are commonly used(More)
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