A low-noise broadband amplifier system with low input impedance
- 1 February 1977
- journal article
- Published by IOP Publishing in Journal of Physics E: Scientific Instruments
- Vol. 10 (2) , 169-171
- https://doi.org/10.1088/0022-3735/10/2/016
Abstract
A low-noise amplifier system with a 3 dB bandwidth of 5 mHz to 150 kHz and an input impedance of the order of 1 Omega is described. The difficulty of bandwidth limitation due to input transformers was overcome by inserting the transformers into a negative feedback loop. The system is used for the investigation of flux flow noise in type II superconductors.Keywords
This publication has 5 references indexed in Scilit:
- Defect migration in a moving fluxon arraySolid State Communications, 1976
- Local Generation of Flux Flow Noise by Pinning Due to Grain BoundariesPhysica Status Solidi (b), 1974
- Electrical performance of a liquid helium-cooled transformerReview of Scientific Instruments, 1974
- Theory of Flux-Flow Noise Voltage in SuperconductorsPhysical Review B, 1970
- Flux-Transport Noise in Type-II SuperconductorsPhysical Review B, 1968