What is an RF choke commonly used for?

An RF choke is a component specifically designed to block high-frequency signals while allowing low-frequency signals to pass. This behavior is primarily due to its inductive properties; as the frequency of the signal increases, the reactance of the inductor also increases, effectively impeding high-frequency signals. In a circuit, this is particularly useful for preventing unwanted RF (radio frequency) interference from affecting the performance of low-frequency audio or control signals, ensuring that these important signals can be transmitted without degradation.

The role of an RF choke is essential in maintaining signal integrity, especially in communication systems where clarity and accuracy of the transmitted data are critical. By selectively filtering high frequencies, RF chokes help maintain the desired operating range of the system, enhancing overall performance.