• What is an induction coil? — The current magnetizes the sensor core Aug 21, 2024
    Induction coil, an electrical device used to produce an intermittent high voltage source. An induction coil consists of a soft cylindrical core of iron, on which are wound two coils: an inner or coil, with relatively few turns of copper wire, and a surrounding coil, with a large number of turns of fine copper wire. An interrupter is used to automatically make and break the current in the coil. This current magnetizes the sensor core and produces a large magnetic field throughout the induction coil. When the current in the coil begins, an induced electromotive force is generated in both the coil and the coil. The opposite electromotive force in the coil causes the current to gradually rise to its value. Therefore, when the current begins, the time rate of change of the magnetic field and the induced voltage in the coil is relatively small. On the other hand, when the current is interrupted, the magnetic field decreases, and a relatively large voltage is generated in the coil. This voltage can reach volts and lasts for the short time that the magnetic field changes. Therefore, the induction coil produces a large voltage that lasts for a short time and a small reverse voltage that lasts for a long time. The frequency of these changes is determined by the frequency of the interrupter. Theoretical and implementation issues of optimizing induction coil magnetometers. The optimization is based on a simple magnetic model of the source, the induction coil and the current-to-voltage converter. The electrical model and characteristic equations required for the optimization procedure have been derived from mainstream theory. The equations have been modified for use in computer design. The program enables the signal-to-noise ratio of the magnetometer. The results have been validated by building and measuring optimized magnetometers and their parameters. The theory has also been used to construct a differential magnetometer, which significantly improves the performance of single-coil magnetometers in magnetically noisy environments.

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