ELF-14M040E

Common Mode Chokes

Common mode chokes are inductive devices used to block common mode electrical noise from various electronic circuits. They are designed to reduce electromagnetic interference (EMI) in order to improve the performance and reliability of the circuit. Common mode chokes are commonly used in power supplies, audio systems, and control systems, but have other uses in modern electrical engineering.

ELF-14M040E is a common mode choke. It is primarily used in switching power supplies, especially higher power supplies with more than 500 Watts. It applies to high frequency circuits such as switching power supplies, inverters, and regulators that require high current ratings and low inductance values. It can also be used in audio applications such as audio amplifiers, preamps, and audio processors.

Application Field

ELF-14M040E is used in power supplies, audio systems, control systems, switching power supplies, inverters, regulators, audio amplifiers, preamps, and audio processors. It features a low leakage inductance, high current capacity, and high frequency capability.

The ELF-14M040E has a wide range of current capabilities, from 4A to 40A. It has excellent winding isolation, high ripple current resistance, and low EMI emission capability. The inductance range is from 1.2 to 17 uH and it can be used up to 250°C.

Working Principle

Common mode chokes work by creating a high impedance in the common mode. This high impedance reduces the common mode noise in the current by preventing the interference from reaching the circuits. The ELF-14M040E has a toroidal core, which provides high impedance in the common mode. The inner windings provide a low impedance in the differential mode so that the signal can travel through the choke.

The ELF-14M040E has a self-resonant frequency of 130MHz, which means that it can effectively reduce common mode noise at frequencies up to 130MHz. Furthermore, it has a low inductance value, which reduces the voltage ripple and allows it to be used in high frequency switching power supplies.

The ELF-14M040E is designed to reduce EMI emission, which is essential for power supplies and audio products. It has a low leakage inductance, which limits the amount of out-of-phase current flowing through the choke. This, in turn, reduces the EMI emission from the circuit.

Conclusion

In conclusion, the ELF-14M040E is a common mode choke that is primarily used in switching power supplies, inverters, and regulators. It has a wide range of current capabilities, a high self-resonant frequency, and a low inductance value. Furthermore, it has a low leakage inductance, which limits EMI emission. The ELF-14M040E is a reliable and efficient solution for reducing common mode noise.