منابع مشابه
On Magnetic Amplifiers in Aircraft Applications
I Abstract In the process of designing an electric power supply system for an aircraft, parameters like low weight and low losses are important. Reliability, robustness and low cost are other important factors. In the Saab Gripen aircraft, the design of the primary power supply of the electric flight control system was updated by exchanging a switching transistor regulator to a magnetic amplifi...
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INTRODUCTION: In our previous work on passive current source RF power amplifiers, it was noted that additional inter-element isolation in a parallel transmit coil array was possible when the lengths of the coaxial cables that connected the amplifiers to the coils were reduced [1,2]. In addition, shorter cable lengths also lead to reduced power loss and cost. This can be achieved by placing the ...
متن کاملSensitivity of the RF magnetic field receivers with superconducting quantum amplifiers for NMR spectroscopy and tomography
The contribution gives results of the theoretical analysis of the noise properties of the RF magnetic field receivers using the Superconducting Quantum Magnetometer (SQM) for NMR systems with the low magnetic field (Low-Field-NMR). The relation for the equivalent spectral sensitivity of the magnetic induction of the receiver, which covers the influence of the intrinsic noise of SQM, antenna sys...
متن کاملTunable Superlattice Amplifiers Based on Dynamics of Miniband Electrons in Electric and Magnetic Fields
i Acknowledgments ii List of original papers v
متن کاملRandom Noise Considerations in the Design of Magnetic Film Sense Amplifiers
A model of a magnetic film sense system is presented. Using the model the mean time between false readouts due to random noise is determined as a function of the system parameters; total magnetic flux switched, switching time, sense line resistance, amplifier noise factor and linear amplifier filter efficiency. (The filter efficiency with respect to a given input pulse shape is the signal-to-no...
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ژورنال
عنوان ژورنال: Nature
سال: 1949
ISSN: 0028-0836,1476-4687
DOI: 10.1038/163501a0