MPS Industries manufactures a large selection of magnetic components for demanding industries, such as aerospace, military, medical, and other OEM markets. A common mode choke is one of the many products we design and develop, which we can also custom design based on your project's requirements. Due to its substantial uses, we have a wide range of common mode choke products in various designs and configurations to meet your changing needs.

What is a Common Mode Choke and How Does it Work?

A common mode choke is an electromagnetic filter, which blocks high-frequency noises from two or more data or power lines while allowing the DC or low signals to pass. The common mode noise is typically emitted from radio signals, unshielded electronics, motors, etc. If these are unfiltered, the noises may cause problems in electronics and electrical circuits.

In a standard common mode choke design, the noise current travels on both lines in the same direction. It's opposed to single-mode chokes, where the current travels on one line in one direction and the opposite direction on the return line that completes the circuit.

What are the Benefits of a Common Mode Choke?

Since common mode chokes can suppress or prevent undesirable frequencies from affecting electronic circuits, they offer several benefits:

• Improved Signal Quality: Common mode chokes can remove unwanted interference and provide a cleaner signal, improving efficiency.
• Low EMI Radiation: EMI or electromagnetic interference is the disruption of electronic devices or equipment caused by an external source. The correct common mode choke design can effectively reduce EMI radiation, ensuring the proper functioning of sensitive electronic components.
• Component Protection: By filtering out common mode noise, a common mode choke can protect electronic components from damage and increased wear and tear.
• High Inductance: As common mode chokes have two windings, they typically have higher inductance values than single mode chokes. Therefore, they're more effective in filtering out high-frequency noise.

Applications of Common Mode Chokes

Depending on the type of common mode choke design you have, they have various applications in different kinds of industries. Selecting the most suitable common mode choke will eradicate problems related to high-frequency noise in your circuit. Some of the common applications include:

• Power Supplies: An AC common mode choke can be used in power supplies to prevent high-frequency noise from entering the circuit.
• Consumer electronics: Common mode chokes are often used in electronics and equipment to reduce EMI interference.
• Telecommunications: Another use for an AC common mode choke is in data transmission lines, where it's utilized to maintain signal integrity for stable and clear communication
• Medical Equipment: As many medical devices and equipment are sensitive to EMI interference, a common mode choke can eliminate potential disruptions.
• Automotive Electronics: With the increasing amount of electronics in vehicles, common mode chokes prevent noise from affecting critical systems.

Let Us Develop Common Mode Chokes Based on Your Needs

Common mode chokes play a crucial role in filtering out high-frequency noise in electronic devices, but choosing the right one is imperative for high-performance results in your applications. Fortunately, we can produce a custom common mode choke design that will meet your prerequisites.

Learn more about our various common mode choke products by contacting us today. You can also request a quote from our professionals, who will develop a special solution tailored to your unique specifications!