Abstract: A multilayer coupler may include electromagnetically coupled planar first and second signal conductors that are separated by a gap, extend adjacent each other along a ground plane, and change orientation in a bend. A plate may be positioned along the bend between the ground plane and the signal conductors. The ground plane may have an opening extending along the bend and the plate. A multilayer coupler may include two coupled signal conductors formed in a loop having a four-wire section in which different sections of the two signal conductors overlap in a four-wire section. In a transition region in which the coupler transitions from the four-wire section to a two-wire section, an isolating ground plane may separate the two two-wire sections extending from the four-wire section. A bend in the transition region may include a plate between the two signal conductors and the ground plane.

Abstract: A multilayer coupler may include electromagnetically coupled planar first and second signal conductors that are separated by a gap, extend adjacent each other along a ground plane, and change orientation in a bend. A plate may be positioned along the bend between the ground plane and the signal conductors. The ground plane may have an opening extending along the bend and the plate. A multilayer coupler may include two coupled signal conductors formed in a loop having a four-wire section in which different sections of the two signal conductors overlap in a four-wire section. In a transition region in which the coupler transitions from the four-wire section to a two-wire section, an isolating ground plane may separate the two two-wire sections extending from the four-wire section. A bend in the transition region may include a plate between the two signal conductors and the ground plane.

Abstract: A touch-type variable resistor structure includes a resistor-base plate, a conductive base plate and a separator member. The resistor-base plate further includes a main plate body and a resistance layer. The resistance layer extended along an extension direction is located on the main plate body. The conductive base plate located on the resistor-base plate includes an electricity-conductive layer facing the resistor-base plate. The separator member located between the resistor-base plate and the conductive base plate further has a central opening. One of the main plate body and the main conductive plate body is formed as a flexible-touch base plate. While the flexible-touch base plate is depressed, part of the electricity-conductive layer would pass through the central opening to electrically couple the resistance layer.

Abstract: The rotating type variable resistor includes a housing; a rotating member disposed to be rotatable in the housing; a ring-shaped support member having a conductive pattern at one surface of the support member and disposed at any one side between the housing and the rotating member; and a sliding member disposed at the other side between the housing and the rotating member, and capable of sliding relative to the conductive pattern, wherein the conductive pattern is composed of a high resistor unit containing carbon and a low resistor unit having a specific resistance lower than that of the high resistor unit, and the high resistor unit and the low resistor unit are alternately and repeatedly formed along a direction where the conductive pattern and the sliding member slide.

Abstract: A strip conductor comprises a first layer with at least one curved section. At least one region of the curved section provided with an additional layer having a smaller resistivity than the first layer. The at least one region is constructed such that resistance on tracks of different radii of curvature is approximately equalized.

Abstract: The invention relates to a manual control apparatus, such as a control pedal for a drive-by-wire control systems, and similar applications. According to an aspect of the invention, the manual control apparatus comprises a hysteresis mechanism that provides more precise and controllable hysteresis than previous mechanism. According to a further aspect of the invention, the manual control apparatus comprises an angular position sensor, and the angular position sensor may comprise abutments that reduce variation in the sensor. According to a still further aspect of the invention, the manual control apparatus comprises a stop pin that regulates the position of a rotatable member relative to the position sensor with less variation. The stop pin may also be used as a single fastener the holds the manual control apparatus together.

Abstract: An electric potentiometer including a wiper lever having brush wipers, which upon a rotational movement about a pivot shaft sweep over electrically conductive layers applied to a carrier plate. A resistor layer is joined at one end to a connection layer and at the other to a grounded connection layer. The layer is joined at one end to a pickup connection layer and at the other, via a supplementary layer resistor, to the connection layer. A sliding layer of electrically non-conductive paste material is disposed between the carrier plate and the resistor layer, the latter of which is formed from a paste material provided with carbon particles. The sliding layer is wider than the width of the wiper and the resistor layer.

Abstract: In a variable resistor of the type wherein there is formed on an insulating substrate a resistive member having wide portions and narrow portions in the sliding direction of a slide member and ends thereof wired respectively to a ground terminal and an input terminal. A plurality of contact elements formed on said slide member are brought into sliding contact with said resistive member and a high resistance film allowing the passage of electrostatic charges therethrough is formed at portions of said insulating substrate lying within the sliding passage of said contact elements so that a part of said contact elements comes into contact therewith when it comes off from said resistive member.

Abstract: An electrical resistance element for use in variable resistance devices such as trimmers and potentiometers, having two or more resistance materials on a non-conducting base. The resistance materials are aligned along a path of travel of a movable wiper or contact to provide a series of variable linear resistances or a non-linear resistance. The interface between the resistance materials is arranged so that individual contact elements of the wiper traverse the interface at different times.

Abstract: A resistance transducer with a non-linear characteristic curve, which transmitter has a resistance track with a variable cross-section on an insulating carrier and a slider engaging on the resistance track. On the resistance track on the insulating carrier of a thick layer system at least one additional layer is applied by the same technology made of a conducting resistor substance, and shaped such that it forms a rib which extends in a direction of movement of the wiper, the rib tapering outwardly perpendicularly thereto, and the wiper transversely engages the rib to form an approximately point-like contact surface.

Abstract: A main resistance element and an elongated conductor are arranged coaxially and a plurality of secondary resistance elements are arranged radially and connected between the main resistance element and the conductor. A slider is ohmically movable on the main resistance element to provide a variable attenuator with low impedance and logarithmic attenuation to at least -60 db. An auxiliary resistance element may be provided coaxially with the main resistance element and the conductor with another set of secondary resistance elements connecting the auxiliary resistance element with the conductor, the ends of the main and auxiliary resistance elements being connected together.

Abstract: An apparatus for the control of variable speed electrical positioning drives, especially for sewing machine positioning drives, is disclosed in two exemplary embodiments. The apparatus provides a preset nominal value of speed and a range of adjustment for additional signals in digital form, thus making possible a continuous or incremental change in the nominal value as well as additional digital signals. The apparatus includes lamellar contact elements of a potentiometer arranged on a base element in the path of a slider for the nominal value of speed and at least one low resistance lamellar contact element arranged in the slider path for producing an additional digital signal.

Abstract: A resistance element for obtaining a continuous and linear output characteristic is obtained by the combination of a zig-zag resistance element and a resistance film of higher resistivity disposed thereover.

Abstract: A variable resistor has an insulating substrate plate, a resistance body formed on the substrate plate and a slider adapted to slide along the resistance body. The resistance body is formed in a winding pattern to provide a larger range of variation of resistance for a given stroke of the slider. The slider has a plurality of contacts adapted for sliding along the resistance body so that at least one of the contacts is kept in contact with the winding resistance body so as to provide a linear change of the output of the resistor.

Abstract: A variable resistor provided with a mechanism which permits the tap resistance to be varied non-linearly; that is, the mechanism permits a contactor to be displaced at a varying rate in response to the operation of input means at a constant rate.