RN212-2-02-1M0

Common Mode Chokes

RN212-2-02-1M0 is a type of common mode chokes. Common mode chokes are electrical components used to filter out unwanted signals in an electric circuit. It is typically placed at the input of a power circuit in order to reduce low frequency and unwanted electromagnetic noise from entering the circuit.

Application Field

Common mode chokes are used in a variety of applications, from industrial to medical. One of the most common uses of these chokes is in power amplifiers, where they are designed to help reduce high frequency noise signals while allowing low frequency signals to pass through unaffected. They are also used in the automotive industry, where they are used to reduce the electromagnetic interference (EMI) emitted by electrical components. In the medical field, these chokes are used in magnetic resonance imagers (MRIs) to reduce excessive EMI that can be created by the MRI’s powerful magnet field.

Working Principle

Common mode chokes work by reducing both high frequency and low frequency signals. This is achieved by a transformer circuit, also known as a toroidal core. This core consists of two windings that are connected together, with one winding wrapped around the other. The chokes work by blocking the unwanted noise from entering the circuit, and will either allow or reject the desired signals. The high frequency noise is blocked by creating an inductor, while the low frequency signals are blocked by creating a capacitor.

The chokes can be tuned to make sure that the desired signals are allowed in, while any unwanted signals are kept out. This is done by adjusting the core of the choke, which can be used to adjust the “inductance/capacitance” ratio. This adjustment allows the chokes to be used for specific applications, where the noise frequency can be filtered out.

Common mode chokes are widely used in a variety of applications, due to their ability to reduce both high and low level frequencies. They are often used in power amplifiers and medical applications to reduce EMI, and are also found in many industrial applications as well.