Limited Tenders are invited for Supply of Ferrite ring
The impedance of the winding consists of one or several turns of a control cable run through the ferrite ring and is too low both for low-frequency operating signals and for commercial frequency alternating current At the same time it is too high for high-frequency (short pulse) signals within the selected frequency range which depends on the number of turns, material and size of the ring itself.
Ferrite Ring Filter Installed on a Control Cable Entering the Electronic Equipment
As a measuring instrument for assessing level of current in the selected direction a small current transformer in the form of a ferrite ring
with copper winding was used.
Hopkins uses ferrite ring
magnets (see photo) of various sizes.
The second ferrite ring
senses the electric field induced in the medium, developing its own time-varying magnetic field in response.
A ferrite ring
is often present along the defect perimeter.
In a current clamp, ferrite rings
are used for three purposes.