An RF choke, also known as a choke coil, is nothing but an inductor. Toroid (ferrite) are commonly used as cores for chokes. RF Choke is used to block high-frequency alternating current (AC) in an electrical circuit while allowing DC or low-frequency signals to pass. It essentially acts as a high impedance to AC signals, preventing them from passing through while allowing DC to pass with little resistance. RF chokes have impedance ranging over a set of high frequencies so that signals in that frequencies are eliminated.
RF chokes are commonly used in electronic circuits to prevent radio frequency interference (RFI) from affecting sensitive components. They are often used in power supplies and audio circuits to filter out unwanted high-frequency noise.
Remember that RF Chokes are not Ferrite beads. There is a common confusion among the designers. While they both perform the similar functionalities, the construction, application and design are different.
]]>
0 Comments