What is the DC block?
The direct current block (DC) is a frequency filter device used in coaxial antenna systems. The DC block allows you to pass the radio frequency signals (RF) and at the same time blocks the interference of the sound and frequency of the DC that can damage the system. DC blocks are used in three different forms known as internal, external or internal/outer. These components are further classified according to the type of connector, voltage and maximum frequency. It does this and at the same time allows you to go through AC currents with a higher frequency used in the transmission of the radio signal in the process called joining. The DC block can cause the transfer of all lower level frequencies, including AC frequencies, so the system modification is sometimes required. This modification process is called the tuning of the circuit.
These devices use the capacitor to filter unwanted frequencies that would damage the sensitive electrical components of the laboratory testing device or radio transmitters and receivers. Larger capacitors offer a lowerThe limit frequency, while smaller capacitors cut off the transmission in a higher range. Where different DC blocks differ in their location in the coaxial system.
The inner DC block is connected as an integral part of the coaxial system main conductor. This configuration is connected along the conductor, also called the hot wire of the system, sometimes built into specialized equipment to avoid the need for spare parts and adjusting the coaxial system. When the outer DC is used, it is connected to the ground plane of the perimeter in the series with the outer wire of the coaxial cable. The combinations of both systems are known as internal/outer DC blocks. These blocking capacitors are incorporated along the ground of the Pprb and the hot wire of the coaxial system.
outer and inside/external varieties of DC block show one special characteristic that limits their use. Since these devices are placed in series with ELEKBy connecting the ground plane, they have the potential to carry the current. This means that the configuration allows the operator to get a shock if it should touch the charged piece of the system. These systems are sometimes used if it is necessary to insert the current into the transmission modulation system. While the settings represent the risk of electric shock, the risk is considered negligible when it is considered against the benefits for the transmitted signal.