4901-S

Series:	4900
Packaging:	Bulk
Part Status:	Obsolete
Inductance:	37nH
Tolerance:	--
Q @ Freq:	85 @ 80MHz
Mounting Type:	Through Hole
Package / Case:	Radial
Size / Dimension:	0.400" L x 0.400" W (10.16mm x 10.16mm)
Height:	0.562" (14.27mm)

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Introduction to Adjustable Inductors

Adjustable inductors are devices which are used in a variety of applications including radio transmitters, antennas, and antennas for cellular phones. The quality of any radio transmission or reception depends largely upon the correct tuning and assembly of the coil windings. Without the correct inductance, the signal will not be transmitted or received in the desired fashion. Adjustable inductors provide an exacting level of control over the inductance, enabling precise tuning of the circuit.

What is the 4901-S Inductor?

The 4901-S induction coil is an adjustable inductor manufactured by Electronic Specialty Products. This high-precision, miniature component is designed to minimize its size and weight, while delivering consistent performance. It operates with a screwdriver adjustment, and is rated for full operation at 12 volts (V) up to a frequency of 1MHz. Its maximum power dissipation is 500mW. The 4901-S induction coil has an operating temperature range of -40°F to +122°F (-40°C to +50°C).

Application Field of 4901-S

The 4901-S adjustable inductor is primarily designed for use in radio transmitters, antennas, and other specialized applications. It is used to adjust the operating current in a circuit, allowing for precise tuning and consistent performance. It is suitable for use in both AC and DC circuits.In addition, the 4901-S adjustable inductor is used for voltage multipliers, filtering and noise cancellation, as well as for regulating amplifier gain and time delay lines. Its ability to adjust the inductance through a variety of frequencies makes it a popular choice for these applications because it can be precisely tuned to meet the needs of the specific application.

Working Principle of 4901-S

The 4901-S adjustable inductor works on the principle of inductance. Inductance is the property of a coil that resists changes to the current flowing through it. An adjustable inductor can be adjusted to vary the amount of inductance in a circuit, which affects the current in the circuit.On the 4901-S adjustable inductor, the inductance is adjusted by rotating a screwdriver adjustment. This changes the position of the coil core, which in turn changes the amount of inductance. The adjustment range is from 0 to 300 µH (micro-Henries).

Conclusion

The 4901-S adjustable inductor is an essential component for many radio applications, as well as for voltage multipliers, filtering, and other specialized applications. It is a miniature component with high-precision, and operates with a screwdriver adjustment. Its ability to adjust the inductance across a wide range of frequencies makes it useful in a variety of settings. By understanding its application field and working principle, one can gain a better understanding of the role adjustable inductors play in circuit design and tuning.

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