ELF-18D650M

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Common Mode Chokes (CMCs) are especially useful for ensuring EMC compliance of electronic equipment and systems in terms of differential-mode and common-mode emissions. ELF-18D650M is a CMC with a wide range of applications and advantages.

Application Field

ELF-18D650M is a miniaturized common mode choke with a current capacity of 9/17 Leads, it has a wide operating temperature range of -25 °C to 85 °C, and is especially suitable for isolating the noise common-mode in a wide range of consumer devices such as tablets, LCD/LED monitors, gaming peripherals, digital audio and video devices, and communication devices. ELF-18D650M is also suitable for harsh working environments, such as in automotive electronics, medical electronics, and remote sensing.

ELF-18D650M has a small form factor and is designed for maximum operational efficiency. It provides superior performance with lower operating costs and is designed for installation in tight places.

Working Principle

ELF-18D650M’s working principle is based on the concept of mutual inductance. When an AC signal is applied to the primary winding of the CMC, a magnetic field is generated in the core. This magnetic field is linked to the windings of the CMC’s secondary. As the current passing through the primary winding increases, so does the current passing through the secondary windings. The secondary current will be in the opposite direction to the primary current, creating a opposing magnetic field, which will reduce the field in the core. This reduces the amplitude of the secondary current and effectively isolates the noise common-mode.

ELF-18D650M also has a built-in shield plate, which helps to reduce common-mode noise transmission and increase the immunity of the device to external interference. The shield plate also helps reduce the magnetic field leakage, reducing the CMC’s overall power consumption.

Conclusion

ELF-18D650M is a compact, cost-efficient common-mode choke with a wide range of applications and advantages. Its small form factor and efficient performance make it an ideal choice for many consumer applications and harsh working environments. It provides superior performance with lower operating costs, and is designed for installation in tight places. With its built-in shield plate and mutual inductance working principle, it effectively reduces the amplitude of the common-mode noise, resulting in increased immunity to external interference.

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