Noise reduction using a matching input transformer (magnetic field measurement system)

@article{Lekkala_IOP_1981, abstract = {Describes the noise characteristics of a magnetic field measurement system which consists of an induction coil detector, a matching input transformer and a sensitive preamplifier. The best noise performance is obtained when the amplifier operates with optimum source resistance. The optimal conditions are obtained by using a transformer to match the source and amplifier resistances. The limited frequency response of the transformer, however, often restricts its application. The methods of designing a broad-band instrumentation transformer are discussed. As an example the transformer construction for a magnetocardiographic measurement system and some measurement results are also presented.}, author = {Lekkala, J. O. and Malmivuo, J. A. V. }, citeulike-article-id = {2743608}, doi = {10.1088/0022-3735/14/8/012}, journal = {Journal of Physics E: Scientific Instruments}, keywords = {transformer}, number = {8}, pages = {939--942}, posted-at = {2008-05-01 23:59:31}, priority = {4}, title = {Noise reduction using a matching input transformer (magnetic field measurement system)}, url = {http://dx.doi.org/10.1088/0022-3735/14/8/012}, volume = {14}, year = {1981} }

TY - JOUR ID - Lekkala_IOP_1981 L3 - citeulike-article-id:2743608 TI - Noise reduction using a matching input transformer (magnetic field measurement system) JF - Journal of Physics E: Scientific Instruments VL - 14 IS - 8 SP - 939 EP - 942 N2 - Describes the noise characteristics of a magnetic field measurement system which consists of an induction coil detector, a matching input transformer and a sensitive preamplifier. The best noise performance is obtained when the amplifier operates with optimum source resistance. The optimal conditions are obtained by using a transformer to match the source and amplifier resistances. The limited frequency response of the transformer, however, often restricts its application. The methods of designing a broad-band instrumentation transformer are discussed. As an example the transformer construction for a magnetocardiographic measurement system and some measurement results are also presented. KW - transformer AU - Lekkala, JO AU - Malmivuo, JAV PY - 1981/// UR - http://dx.doi.org/10.1088/0022-3735/14/8/012 ER -