Tuners – Tuner unit directly responsive to voltage and/or current... – Saturable core-type inductor
Patent
1985-01-23
1986-12-16
Gensler, Paul
Tuners
Tuner unit directly responsive to voltage and/or current...
Saturable core-type inductor
336 83, 336155, H03J 320, H01F 2108
Patent
active
046300139
ABSTRACT:
An inductor is configured so as to wind a control coil on one of winding portions of first and second cores and to wind a tuning coil on the other winding portion to insert the second core into a hollow portion provided inside the first core, thereafter accommodating the first and second cores thus assembled into a pot-shaped core, wherein both winding portions of the first and second cores are arranged in parallel with each other and the winding portion of the first core is arranged perpendicular to a bottom surface of the pot-shaped third core. The control coil and the tuning coil are arranged so that their magnetic paths overlap with each other at the winding portion of the second core, thereby to control a current flowing through the control coil when energized to vary effective permeability of the core on which the tuning coil is wound, thus producing changes in inductance.
REFERENCES:
patent: 2608610 (1952-08-01), Thulin
patent: 2997584 (1961-08-01), Querfurth
patent: 3601734 (1971-08-01), Chesney
Gensler Paul
Toko Kabushiki Kaisha
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