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The core of a cable has a dual purpose of being an amplifier block. There is usually a small toroid in the center of the cable. The toroid can be made of a variety of materials such as stainless steel or anodized copper. Many types of toroidal ferrites are available.
Toroidal Ferrites is made of a flexible, highly conductive material called "ceramic". This material is usually made of stainless steel. This type of cable ferrite has been used for more than fifty years as a high voltage power amplifier. The toroidal ferrite is extremely durable and has an excellent lifetime compared to other types of ferrite that are prone to degradation and corrosion. These types of cables are very light and will not affect its weight when it is carried by a carrier. Another advantage is that they are very easy to install. They can be installed in just a few minutes using standard electrical tools and the appropriate tools required for installation are provided with the cable.
The use of a toroidal ferrite core in a power amplifier can be accomplished using a low resistance cable that has a small amount of insulation between the ends. In order to prevent short circuits, the correct shielding is added to the insulation. A suitable transformer is used in order to convert the AC power into DC voltage and to convert the DC voltage back to AC current.
Toroidal ferrites are available in single sided or double sided toroidal shapes. One side can be wound with a variable resistance, while the other is wound with a constant resistance. It is recommended to use two-conductor wires that have different winding densities, as this will reduce the noise that could be generated when the toroid is wound. If using double-sided toroidal shapes, the right conductor is connected in series and the left conductor should not be connected if you are using a single-conductor wire.
Another important feature of the toroidal ferrite is that it is extremely flexible and is able to be wound in almost any direction with little effort. For example, the core can be wound from three concentric circles around a central toroid. or around the core and it is possible to use the core as a dipole or even a single conductor cable. Since it is made from a very flexible material, the cable is very easy to install and it is also able to carry an active or passive RF signal.
Cables made from a toroidal core are known as "magnetic field sensitized" and they can be used to transmit signals in any way. For example, a magnetic field detector can be used to detect and identify the magnetic fields around the antenna which can then be used for monitoring. This can be done from a ground station, satellite, mobile base or fixed station. The advantage of using a magnetic field sensing system is that the signals are always accurate. Another use of the magnetic field sensing cable is that they are able to detect changes in magnetic fields and transmit signals automatically.