Technique for Reducing the Ambient Electric Field Generated by Inductive Voltages in Low Frequency Magnetic Field Generators,
Abstract
U.S. Navy interest in the physiological effects of nonionizing radiation in the extremely low-frequency (ELF) range has led to the construction of research facilities in which various life forms can be exposed and their physiological responses to these fields monitored. The magnetic component is generated by a coil system in resonance with a capacitor bank. The inductive voltage drop across the system is sufficient to generate a high electric field between the coil sections. This electric field is undesirable because it does not allow effects of the magnetic field to be separated from effects of the electric field. The undesirable electric field component can be minimized by breaking each section at its center. These subsections can then be connected with the capacitors in such a way that the electric field generated by each coil segment is canceled by the electric field generated by another segment of the same coil. Several different arrangements will accomplish the desired cancellation. The pros and cons of each arrangement are a function of the required number of capacitors and the voltage levels on the interconnecting cables. Very large coils producing high magnetic fields can be constructed in this manner. (Modified author abstract)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 05, 1973
- Accession Number
- AD0764531
Entities
People
- James D. Grissett
Organizations
- Naval Aerospace Medical Research Laboratory