744281101

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Common Mode Chokes are used when it is necessary to ensure that differential current flows in two directions without producing electromagnetic interference (EMI) in the circuit. The 744281101 Common Mode Choke is designed to limit the Common Mode (CM) current to a certain set of conditions. It is primarily used to suppress spurious energy in switchmode and linear power supply designs.

The most commonly used design for a Common Mode Choke consists of an insulating core, such as air, with a single inductor winding around it. This inductance is then connected in series with a resistor, usually placed terminally on one side of the inductor. The inductance and series resistor form a low pass filter which limits the amount of acoustic and high frequency energy that can reach the load. Common Mode Chokes are typically found in power supply and telecommunications applications.

The 744281101 Common Mode Choke operates on the principle of inductive current cancellation. It works by absorbing and filtering out high frequency radiated energy, converting it into a low frequency ac signal which is then dissipated harmlessly to ground. The inductor in the choke acts like an electric insulator, blocking the flow of current in the common mode. It reduces the impedance across the differential mode (DM) signal, allowing the signal to pass through without being affected by EMI.

The 744281101 Common Mode Choke is designed to operate at frequencies up to 30 kHz. It provides excellent attenuation performance up to 10 MHz, with a nominal impedance of less than 0.2 ohms. The choke is resistant to temperature changes and shock, making it ideal for use in a variety of applications. It is also UL, CE, VDE and RoHS compliant.

In addition to power supply applications, Common Mode Chokes are commonly used in a wide range of fields, such as automotive, avionics, medical, and military. In automotive applications, the 744281101 Common Mode Choke is used to protect vehicle sensors and actuators from EMI. In avionics, the choke helps suppress RF signals from sources such as Servo Motors, Power Supplies, and Control Systems. In medical applications, it is used to isolate and protect critical medical equipment from EMI. Finally, in military applications, it is used to keep EMI levels low in fragile military electronics.

The 744281101 Common Mode Choke is an effective and reliable solution for suppressing unwanted EMI in a range of applications. It is designed to operate efficiently in a wide range of conditions, providing excellent attenuation performance up to 10 MHz while maintaining a low nominal impedance. It is also UL, CE, VDE and RoHS compliant, making it a reliable and safe choice for many applications.

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