5900-121

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Fixed inductors are electrical components composed of simple windings of small diameter wire wound around a core material. The 5900-121 Inductor is a broad range, moderate power device which can find a variety of applications. This paper will discuss the uses and principles of operation of this device.

The 5900-121 Inductor has a small core material with a winding of 11 Turns of 23 AWG wire of 4mm thickness. The inductor offers two winding taps: one that gives 9-12 microhenry inductance, and the other for 18-24 microhenry inductance. The unit features excellent temperature stability from –25°C to +85°C, a high resistance to saturation and high self-resonant frequencies.

At higher frequencies the inductance of the 5900-121 inductor can be used in complex switching power supplies as well as EMI/RFI filtering in applications from 10MHz to over 100MHz. It is also suitable in applications such as noise suppression in power amplifiers, stepped impedance matching networks and frequency selective wave shaping networks.

This inductor is a valuable component in more common, low frequency applications too, such as chokes, filters and switching frequency transformers. As with the high frequency applications, the 5900-121 inductor is beneficial in EMI/RFI filters and noise suppression networks, as well as for power supply filtering, and high voltage insulation and decoupling applications.

Since inductors oppose changes in current, they are useful in both dc and ac circuits. The 5900-121 inductor allows steady current flow in dc circuits, meaning that in the latter application, most of the energy is transferred to the inductor in the form of heat. In ac circuits, the inductor produces a voltage which opposes any change in current, and this voltage is proportional to the rate of change of current. This provides the application with the effect of a lag, thus suppressing any unwanted frequency components in the circuit.

In general, inductors produce magnetic fields when a current is passed through them, and their job is to store energy in these fields. In the case of the 5900-121 inductor, this energy is then transferred to the circuit via the inductance of the device. As the value of inductance rises with the inductor’s size, so the strength of the magnetic field also increases.

The 5900-121 inductor is a versatile device, capable of supporting a variety of applications. Its small size and high temperature stability make it an ideal choice for a range of ac and dc applications, from low to high frequencies and from noise suppression networks to power supply filters. It is an affordable and reliable method of improving the functionality of a wide range of equipment.

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