TUNED INDUCTOR Russian patent published in 2005 - IPC

FIELD: radio electronics, possibly manufacture of preselectors of radio receivers with discrete tuning at high demands for stability of parameters at change of temperature and in time.

SUBSTANCE: inductor includes coil, annular core and rod type core in carcass. Part of turns of annular core embraces also carcass with rod type core. It is equivalent to structure with turns that embrace magnetic core whose cross section is larger than that of annular core.

EFFECT: enhanced Q-factor, mainly for inductors having cores on base of magnetic materials with low magnetic permeability, for example of carbonyl iron.

1 dwg