EXC-28CH900U

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Common Mode Chokes are essential in the wide spectrum of electrical engineering applications due to their ability to reduce electromagnetic interference (EMI) in order to increase the signal quality and reduce the amount of noise in the surrounding area. The EXC-28CH900U is a classic example of such a device, and is commonly found in industrial control systems, power management systems and renewable energy applications.

The EXC-28CH900U consists of an axial-leaded common mode choke that is designed to reduce EMI present in sensitive analog and digital signal lines. The choke uses a high-impedance differential winding to create a magnetic field which then filters out the unwanted noise. The device also uses core material with high magnetic permeability and saturation value, and includes up to 14 shielded windings. These features make the EXC-28CH900U very effective in reducing EMI for both differential and common mode noise.

The EXC-28CH900U contains two windings that create a magnetic field: a non-inductive resistor winding and a core winding that is connected in series with a non-inductive resistor. The core winding is what creates the high impedance or choking effect by inductively coupling the two opposite polarities in each winding. This makes it difficult for any alternating current to pass through the choke by creating a low-pass type filter that filters out high frequency signals while still allowing for a low-frequency electrical current to pass through.

As a result, the EXC-28CH900U is able to effectively reduce EMI present in sensitive analog and digital signal lines, making the chatter in the main control system less noisy and more reliable. The device has been proven to reduce EMI in differential and common mode noise, as well as supply voltage noise in devices such as power supplies. It can be effectively used in power management systems, industrial automation systems, motor drive systems, and renewable energy systems, just to name a few.

Compared to traditional EMI filters, the EXC-28CH900U has several advantages. For example, it has a higher inductance for the same current rating and the core material is selected for higher saturation value, providing much better performance. In addition, the device’s design allows for the windings to be shielded and for heatsinks to be attached, increasing its effectiveness in dampening noise.

Overall, the EXC-28CH900U is a reliable and effective common mode choke that is used in a variety of applications due to its ability to reduce EMI present in sensitive analog and digital signal lines. Its core winding is effective in creating a high impedance choking effect, while its shielding, heatsinks, and core material make it even more effective in dampening noise. As a result, it is a widely used device in industrial control systems, power management systems, and renewable energy applications.

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