✔ Ferrite Slug Inductor

Ferrite Slug Inductor

- June 27, 2017

For inductor cores soft ferrites are used which have low coercivity and thus low hysteresis losses. One reason is that the coil can have wire wound to 330 degrees where as that cant be done for slug turned coil.

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The formulation of ferrite is xxfe 2 o 4 where xx represents various metals.

Ferrite slug inductor. I have a ferrite core with a relative permeability of about 70. It is used for its properties of high magnetic permeability coupled with low electrical conductivity which helps prevent eddy currents. 0500 diameter 250 long brass adjuster.

In electronics a ferrite core is a type of magnetic core made of ferrite on which the windings of electric transformers and other wound components such as inductors are formed. In radio antennas ferrite rods are useful from vlf spectrum to vhf spectrum. Hf ferrite tuning slug.

Ferrite core inductor for antenna. Use icf form p10 for coil form. The variable inductor having an adjustable ferrite core is known as slug tuned inductor.

Ferrite is a ceramic ferrimagnetic material that is nonconductive so eddy currents cannot flow within it. This was made for and used exclusively in scientific radio hf equipment produced in the 1980s. If there is no core the value is 0 and if the complete core is screwed into the coil the value is 100.

1uh variable rf inductor vintage radio electronic tv adjustable ferrite coil. I am going to build the inductor in the figure above. The value of inductance increases or decreases respectively due to the movement of a ferrite core into or out of the coil winding.

Ferrite rods bars slugs plates and tubes are primarily used as magnetic cores in radio antennas chokes inductors and filters. 6 32 slotted brass adjuster. This was made for and used exclusively in scientific radio hf equipment produced in the 1980s.

0500 diameter 250 long brass adjuster. Theyre many reasons to consider toroids over other coils. The basic construction of a slug tuned inductor is shown in fig.

The position of the slug core is in percent of the total lengt of the core. A slug turned coil has a cylindrical shape and it has adjustable iron and ferrite cores toroids are less adjustable. For higher frequencies inductors are made with cores of ferrite.

Hf ferrite tuning slug. The ferrite slug core raise the a l from 33 to 125 depending on how deep it is screwed into the coil. Based on arrl formulas i have plenty of core length to separate the two coils along the length of the core.

6 32 slotted brass adjuster. The tables below show the complete data.