Title :
A system for the exposure of small laboratory animals to a 25-mT 60-Hz alternating or traveling magnetic field
Author :
Fam, Wagih Z. ; Mikhail, Eva L.
Author_Institution :
Dept. of Electr. Eng., Tech. Univ. of Nova Scotia, Halifax, NS, Canada
fDate :
7/1/1993 12:00:00 AM
Abstract :
A versatile exposure system which can be used to investigate the effects of a 60-Hz alternating magnetic field or traveling magnetic field on small laboratory animals is described. Special attention was given to the design of the electric circuit to simplify the supply requirements and to keep the overall current to a minimum. A magnetic field having a flux density up to 30 mT (300 G) can be generated, and a traveling magnetic field is obtained by reconnecting the coils to a three-phase supply. The total magnetic field due to the currents in the three coils used in the exposure system is analyzed. A computer program was written to evaluate the magnetic field in the region where the animals are located. The difference observed between measured and computed values is attributed to the representation of the multiturn, multilayer coils by equivalent single-turn coils.
Keywords :
biological effects of fields; biological techniques and instruments; biomagnetism; magnetic field effects; 25 mT; 3-phase supply; 30 mT; 60 Hz; alternating magnetic field; computer program; magnetic field exposure system; multiturn multilayer coils; single-turn coils; small laboratory animals; traveling magnetic field; Animals; Biological systems; Circuits; Coils; Electromagnetic fields; Laboratories; Magnetic analysis; Magnetic field measurement; Magnetic fields; Magnetic multilayers; Quantum computing; Animals; Animals, Laboratory; Electromagnetic Fields; Equipment Design; Housing, Animal; Magnetics; Mathematics; Mice; Models, Biological;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
