Tuners – Tuner unit directly responsive to voltage and/or current... – Reactance tuning
Patent
1976-03-30
1977-05-31
Gensler, Paul L.
Tuners
Tuner unit directly responsive to voltage and/or current...
Reactance tuning
334 51, 338160, 338180, 338202, H03J 530, H01C 1042
Patent
active
040272753
ABSTRACT:
A turret-type controller includes a base with a plurality of resistive strips mounted thereon, each of which is associated with a conductive contact movable with respect thereto. A pair of annular conductive strips are also situated on the base, but axially spaced from the resistive strips. The annular conductive strips are each operably connected to a different end of the resistive strips by means of a conductive strip, one of which is at least partially situated on the underside of the base. Each of the resistive strips has a length preselected such that the change in the magnitude of the tuning signal required to provide a given frequency change in the tuner in different regions of the frequency spectrum is achieved through substantially equal variations in the conductive contacts associated with each resistive strip.
REFERENCES:
patent: 3601703 (1971-08-01), Midgley
patent: 3602867 (1971-08-01), Kohler
patent: 3755742 (1973-08-01), Maugans
patent: 3905097 (1975-09-01), Beetle
Gibson Richard D.
Whelan Robert D.
General Instrument Corporation
Gensler Paul L.
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