Can an iron cut ring be used as a variable inductor for parametric...

EQ or filter?


Assuming an iron ring is missing some of its circumference.


Then it would be easy to wind.


And when the air gap is reduced by squeezeology the inductance increases.


Can it be used on a Pleiades (R, L) filter?


The term squeezeology, bentology comes from Warwick Univeristy Physics, electronics researcher, lecturer on vacuum devices, Dr. Smith. He has used the term in relation to find tuning microwave apparatus.