Inductor coils are common components that are installed in the majority of today’s electronics devices. Choke inductor coils (sometimes called radiofrequency chokes) are specific types of inductors engineered for signal filtering properties – primarily, passing DC current while filtering out AC current interference.
In simple terms, all choke coils are inductors, but not all inductors are chokes. Below we take a closer look at how inductor chokes are designed and manufactured, as well as their unique electromagnetic characteristics.
Inductor Choke Coils Explained: Design, Performance, and Functionality
At the most basic level, inductor coils are electromagnetic wire windings that convert electrical current into stored magnetic energy. Specifically, choke inductors are designed to cut off (or “choke”) high-frequency AC current without impeding the conduction of DC current.
This unique property has many different uses in the manufacturing of electronics. For example, choke inductors can essentially tame the flow of electrical current and protect wire insulation from damage due to steep spikes. There are also a myriad of non-critical uses. For example, car audio systems employ choke coils to filter out high-frequency electrical noise before it reaches the speakers.
To achieve this, inductor chokes feature a precise coil of wire wound around a magnetic core. Through the precision winding process, we can customize the impedance level of each custom choke inductor to achieve the exact desired frequency needed for each product.
Common Product Applications for Inductor Choke Coils:
- Radio Receivers – Inductor chokes are used in various radio frequency (RF) receivers and devices to filter out unwanted high-frequency interference, allowing a clean signal to pass through.
- Audio Systems – Choke coils remove high-frequency electrical interference from the amplifier and other components, preventing it from being projected through the speaker system and ruining the audio quality.
- Electronic Sensors – Inductor chokes prevent sensor interference by filtering out electrical current/noise that would otherwise block or impede the device’s sensing performance.
- Power Supply Components – Choke coils are generally installed in high-voltage power supply devices for both consumer and industrial equipment. In these applications, chokes filter out the unwanted current noise, which would otherwise be audible as a constant hum.
Quality U.S.A. Manufactured Inductor Choke Coil Windings
Based out of Fairbury, Illinois since 1984, US Cotronics is one of America’s premier manufacturers of inductor coil windings, choke coils, and related components. We produce a wide range of quality-made inductor choke coil windings in standard as well as custom configurations.
