Z235

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Common mode chokes are device that has the ability to restrict high frequency noise (often referred to as radio frequency interference or RFI). The Z235 is a type of common mode choke and is used to suppress electromagnetic interference (EMI). EMI can be caused by an array of sources such as motors, switches, power lines, or other electronic devices. The efficiency of a common mode choke is dictated by which type of field it works in and how it functions.

Common Mode Chokes Application Field

The Z235 was engineered to reduce both common mode and differential mode emissions in a variety of applications. This includes both power line and network wiring applications. It is also frequently used in electronic circuits, where the lines ability to reject amplifier, filter and oscillator noise.

Common mode chokes can be utilized in other applications as well, such as automotive systems, military and defence installations, power tools, radio frequency and cable systems. The Z235’s low profile and compact size also make it suitable for fits in minimal space, making it ideal for applications where space is limited.

Working Principle of Common Mode Chokes

In the simplest terms, the purpose of a common mode choke is to limit current flow between two points, allowing only certain frequencies to pass. The basic construction of the Z235 specifically consists of two or more windings around a magnetic core. These windings act as inductors and, when there is a signal on any of the windings, they oppose the current flow between the two points.

It can be helpful to think of a common mode choke working as a variable filter where the resistance of the winding is used to control the current flows. At low frequencies, the resistance is very low, allowing the signal to pass through easily. At higher frequencies, however, the resistance increases, restricting the current flow.

A common mode choke will also act as an isolator. This means that it will prevent the differential mode noise from effecting the transmitting end. This is due to the fact that the windings have different signals on them, which prevents any current from passing between them.

Conclusion

Common mode chokes, like the Z235, are an extremely useful tool in reducing the interference caused by electromagnetic interference and other noise sources. They work on the principle of inductors, allowing only certain frequencies to pass through them and limiting the current flow between two points. This ensures that the line is not affected by the noise generated by other devices. They are also flexible, small, and have been designed for a variety of applications, from military and defence systems to automotive systems and more.

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