Title: Signal selective circuit

Abstract: In one aspect, the circuit has a first impedance element which preferably is in the form of a tapped inductor with a plurality of taps thereon, and a second impedance element which preferably is in the form of a capacitor. One terminal of the capacitor is connected to a terminal of the inductor, the other terminal of the capacitor is movably connected to a selected one of the taps. The circuit is tuned to a resonant frequency determined by the value of the capacitor and the value of inductance associated with the selected tap. The taps are located on the inductor to cause each resonant frequency to be a substantially fixed percentage greater than the next lower one of the resonant frequencies. In one embodiment, a connector plug is provided, having a first portion with a terminal connected to the capacitor; a second portion with terminals connected to the taps on the inductor; and a third portion matable with the second and third portions. The third portion is provided with means to cause the terminal on the first portion to be connected to a selected one of the terminals of the second portion.

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Inventors: Wycoff, Keith H. (Lexington, NB)

Application Number: 515505
Filing Date: 1974-10-17
Publication_date: 1976-01-13
Assignee:
Primary Class(es): 333/167 334/56
Other Classes:
US Patent Ref:

1127738	Feb, 1915	Coughenour	336/150.
1463304	Jul, 1923	Bingay	336/147.
1971872	Aug, 1934	O'Brien	336/150.
2310797	Feb, 1943	Lea	334/56.
2761066	Aug, 1956	Robinson	334/56.
2995656	Aug, 1961	Sneath	334/56.
3264566	Aug, 1966	Kaufman et al.	334/56.
3281747	Oct, 1966	Winsand	336/107.
3427569	Feb, 1969	Abramson	334/56.
3486076	Dec, 1969	Abbott et al.	339/18.

Other Refs: 110,547

May, 1940	AU

Primary Examiner: Gensler, Paul L.
Assistant Examiner:
Attorney: Prangley, Dithmar, Vogel, Sandler & Stotland