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Description
In this example, current flows away from the observer, which makes the magnetic field lines travel
clockwise. The magnetic field strength at each point around the conductor is positively correlated by the
factor 1/r, in which r is the radius from the conductor to a given point. When two conductors are parallel
with the current flowing in the opposite direction from one conductor to the other (see
), the field
lines in between the conductors add together (amplifying each other). The field density increases. When
the conductors are shaped into a coil form (called an inductor, see
), the magnetic field lines are
distributed as illustrated.
Figure A-3. Magnetic Field Distribution Around a Two Parallel Conductor
Figure A-4. Field Line Distribution Around a 6-Turn Inductor
This is the field distribution for a magnetic dipole. This shape causes the magnetic field lines to extend
most effectively in distance. When AC current is applied to the inductor, the magnetic fields generated will
alternate accordingly. For instance, with the TIRIS system, an alternating current of 134.2 kHz is used.
This means 134200 alternations per second for the generated magnetic field.
32
Brief Theory of Magnetic Induction
SCBU025 – November 1996
Summary of Contents for TIRIS SCBU025
Page 1: ...Antenna Reference Guide November 1996 SCBU025...
Page 2: ...Antenna Reference Guide Literature Number SCBU025 November 1996...
Page 6: ...www ti com 6 SCBU025 November 1996 Submit Documentation Feedback...
Page 20: ...www ti com Noise Characteristics 20 SCBU025 November 1996 Submit Documentation Feedback...
Page 30: ...www ti com Mechanical Characteristics 30 SCBU025 November 1996 Submit Documentation Feedback...
Page 34: ...www ti com Theory of Coupled Inductors 34 SCBU025 November 1996 Submit Documentation Feedback...