1. Refer to the diagram below showing the inner and outer conductors of a coaxial cable. 2. The outer conductor is usually sheathed in a protective PVC outer jacket ( A ). 3. In most cases, the inner and outer conductor terms are negligible, in which case one may approximate 4. Therefore, the inner or the outer conductor needs a DC-block, that is, a capacitor. 5. Coaxial railguns accelerate toroidal plasma armatures using a hollow outer conductor and a central, concentric, inner conductor. 6. Coaxial structures with spring-loaded inner and outer conductors can serve as an RF probe for modern communication electronics. 7. Also, additional quarter-wavelength sections may be connected to the outer conductor to form a better ground plane. 8. There are three regions that may contain induced magnetic fields : the center conductor, the dielectric and the outer conductor . 9. No energy flows outside the cable, either, since there the magnetic fields of inner and outer conductors cancel to zero. 10. If the DC block is used in the outer conductor , it is in parallel with the larger capacitor in the power supply.
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