ER1840-35JM

Fixed Inductors

The ER1840-35JM is a fixed inductor, a component that stores energy in the form of a magnetic field. Fixed inductors are used in a variety of electronic circuit applications, from filtering noise to providing low impedance to high-frequency signals.

Inductors work using the principle of induction, the production of an electrical current by a changing magnetic field. In the case of an inductor, the electrical current flowing through coils of wire produces a magnetic field, which in turn induces a current in the adjacent laminates. This induced current is then used to power other components and devices.

Applications

Fixed inductors, including the ER1840-35JM, are most often used in analog applications such as filtering out noise, power supply filtering, and providing low impedance to high-frequency signals. They are also useful for providing the necessary inductance in RF circuits like GSM receivers and other RF receivers. They are also used in applications such as power factor correction and voltage stabilization.

Fixed inductors are commonly used in circuits requiring decoupling capacitors, as they serve to filter out any unwanted electrical noise. The inductor is placed in series with a capacitor, forming an LC (inductance-capacitance) network with the capacitor absorbing and reflecting any noise in the circuit.

Another application for fixed inductors is in DC converters, where transformers are used to step-up or step-down DC voltages. The primary winding of a transformer is often a fixed inductor, and the secondary winding is typically a variable inductor. This allows the transformer to convert the DC voltage from one level to another.

Working Principle

The working principle of a fixed inductor is based on the same principle of induction as the one described above. An electrical current flowing through coils of wire produces a magnetic field which induces a current in adjacent laminates. This induced current is then used to power other components and devices.

The magnetic field created by the current also induces a voltage across the inductor’s terminals. This voltage is opposed to the applied voltage, resulting in a counteracting force which limits the current flow. This opposition to the current flow helps filter out noise, creating a smoother signal. The higher the inductance, the greater the opposition to the current flow, and the better the signal filtering.

In addition to filtering and DC converters, fixed inductors are also used in high-frequency switching circuits. The inductor is placed in series with a semiconductor device, such as a transistor or FET, which is used to switch the inductor’s current on and off quickly. This allows for high-frequency signals to pass through the inductor without being affected by noise.

Conclusion

The ER1840-35JM is a fixed inductor component used in a variety of electronic circuit applications. The component works based on the principle of induction, the production of an electrical current by a changing magnetic field. It is used in applications such as filtering noise, providing low impedance to high-frequency signals, and as a primary winding in transformers.