Abstract: A position sensor arrangement has a transformer based position sensor and a cable peaking correction apparatus. The cable peaking correction apparatus is controllably coupled to a transformer based position sensor excitation input or the outputs from the transformer based position sensor. A signal processing system is connected to multiple outputs from the transformer based position sensor arrangement.

Abstract: The present invention is directed to a capacitor apparatus of the capacity variable type. This capacitor apparatus is manufactured by Micro Electro-Mechanical System technology, and comprises an insulating substrate (2) in which at least two capacitor electrodes (3), (4) are formed on one surface (2a) in the state where they are insulated each other, an actuator (5) formed by insulating material and having an external shape to bridge over the respective capacitor electrodes (3), (4), the actuator (5) being such that a conductor which respectively constitutes capacitors between the conductor (6) and these capacitor electrodes (3), (4), and drive means (7) for allowing this actuator (5) to undergo an operation to come into contact with one principal surface (2a) of the insulating substrate (2) or to become away therefrom.

Abstract: Variable capacitive device, such as a capacitor, controllable in voltage Vc including at least one first armature (L) and one second armature (R), the armatures being separated by an insulation layer (D) including several conducting aggregates separated from each other. The use of the capacitor according to the invention in a resonant circuit.

Abstract: A trimmer capacitor includes anchor portions that are arranged to be stepped down from the surface of a fixed electrode and are embedded in a stator near the upper surface of the stator at the tip portions of the fixed electrode. Because the tip portion of the fixed electrode has a section that is exactly perpendicular or nearly perpendicular to the surface of the fixed electrode in the region from the surface of the fixed electrode to the anchor portions, even if the upper surface of the stator is polished in the process for forming the stator, neither the area of the fixed electrode nor the capacitance changes.

Abstract: A capacitance-type external-force detecting device includes a substrate, a moveable unit which is supported by the substrate via a supporting beam and which can be displaced in the detecting direction, a comb-shaped fixed electrode provided on the substrate and including a plurality of fixed electrode units spaced in the detecting direction, a comb-shaped moveable electrode provided on the moveable unit and including a plurality of moveable-side electrode units provided between the corresponding fixed electrode units so that the moveable-side electrode units are meshed with the corresponding fixed electrode units, and a capacitance-detecting unit for detecting the displacement amount of the moveable part, at the time when the external force causes the moveable unit to be displaced in the detecting direction, as the variation in the ratio of the overall capacitance between the fixed electrode units and the moveable electrode units and for outputting a voltage signal substantially in proportion thereto.

Abstract: The invention discloses a micro-structure capacitor formed by joining the metal layer of a multi-porous micro-structure. A substrate is used as an etching stop layer when producing the capacitor. Therefore, pores with low aspect ratio and uniform size are formed on the surface of the substrate. The efficiency of the subsequent thin film coating process is increased. The porous three-dimensional structure increases the capacitance. Micro-structures are stacked up so the capacitor produced features small size and high capacitance.

Abstract: A trimmer capacitor includes anchor portions that are arranged to be stepped down from the surface of a fixed electrode and are embedded in a stator near the upper surface of the stator at the tip portions of the fixed electrode. Because the tip portion of the fixed electrode has a section that is exactly perpendicular or nearly perpendicular to the surface of the fixed electrode in the region from the surface of the fixed electrode to the anchor portions, even if the upper surface of the stator is polished in the process for forming the stator, neither the area of the fixed electrode nor the capacitance changes.

Abstract: In a variable capacitor having a stator with a stator electrode and a rotor with a rotor electrode both of which are housed in a recess section of a casing while allowing the recess section to be closed by a cover, enabling the rotor to be brought into stable close contact with the stator. To this end, a cover (46) made of a chosen metal includes a cover main body (55) which covers the upper opening of a recess section (45) except for an adjustment hole (54) that exposes a driver groove (30) of the rotor (43), leg sections (56, 57) which engage a casing (44) letting the cover main body (55) be secured to the casing (44), and a rotor terminal. The cover main body (55) has a size corresponding to the outer diameter of the variable capacitor (41). This cover main body (55) may have a vent shape so as to create intended elastic force which may act to compress the rotor (43) against the stator (42).

Abstract: In a rotor which is rotated for adjusting capacitance provided by a variable capacitor, a portion for receiving a tool for rotating the same is defined by a through-hole. Thus, it is possible to protect the rotor from application of a pressing force from the tool, thereby suppressing change of a clearance between the rotor and a stator. Consequently, it is possible to stabilize the capacitance as the capacitor is being adjusted, as well as to reduce setting drift that causes the capacitance as adjusted disadvantageously to change when the tool is separated from the rotor.

Abstract: In an electric regulator unit, a variable electric component has a body which is accommodated in a recess formed in one axial end face of a holder against angular movement relative thereto about an axis of an operating shaft of the variable electric component such that the operating shaft extends away from a bottom of the recess. An assembly of the holder and the variable electric component is accommodated in a recess formed in one axial end face of a knob such that the operating shaft is engaged with a bottom of the recess in the knob. The arrangement is such that when an outer peripheral surface of the knob is manipulated, the knob is angularly moved to move the operating shaft angularly about the axis thereof relatively to the body. At least one friction-torque imparting element is arranged between the knob and the assembly for imparting friction torque to the angular movement of the knob relative to the holder and the body.

Abstract: A variable electronic component in the nature of a capacitor includes a free floating impedance varying member disposed overlying an impedance varying portion of a rotor. The impedance varying portion includes a substantially planar surface and an adjacent opening which are brought into varying degrees of overlying registration with the impedance varying member.

Abstract: A light scanning device has a light deflecting member such as a polygon mirror rotated to thereby scan with a light, a bearing member for rotatably supporting the light deflecting member, a supporting member for holding the bearing member, and a base member formed integrally as a one-piece construction with the supporting member. The light deflecting member is accurately held relative to the base member by the highly accurately provided supporting member. The light scanning device is characterized by the integral molding for improving the accuracy of an optical system member which has heretofore been made discretely and thereafter coupled to the base member, and is preferably characterized by the integral molding of a supporting portion (a positioning and containing portion) for supporting a plurality of optical system members relative to the base member.

Abstract: An adjustable electromechanical device, such as a potentiometer, a variable capacitor or a multiple switch, comprising a shaft which is rotatably mounted in a sleeve. The shaft is retained in the axial direction by an annular wall portion of the bearing sleeve at the free end of the sleeve, the annular wall portion is spaced from the remainder of the sleeve by at least one but preferably two evenly distributed slots which extend circumferentially in the wall of the sleeve. The annular wall portion remains connnected to the remainder of the bearing sleeve at at least one location. The free parts of the annular portion are deformed to engage a circumferential groove in the shaft.

Abstract: A cover sheet for sealingly covering the rotatable head of an adjustable electric device such as a potentiometer, trimmable capacitor or the like. The cover sheet is provided over a screwdriver opening through which the device's capacitance, resistance or the like is set. The cover sheet is formed at the opening and is bonded to the inner peripheral surface of an edge portion which defines the opening. Thereby, the rotary electric device is closed. The cover sheet is preferably formed of a silicone adhesive material.

Abstract: Herein disclosed is a variable porcelain condenser structure in which a rotor electrode and a stator electrode are arranged through a ceramic dielectric member. A stator is made of a ceramic dielectric member and formed with the stator electrode on its one side. A rotor is made of a metallic material and formed with the rotor electrode of generally semicircular shape on its one side. Both the stator and the rotor are mounted on the cylindrical bottom of an insulating frame. The aforementioned rotor, stator and insulating frame are held altogether in elastic contact with one another by means of a metal case having several elastic tongues.

Abstract: Disclosed herein is a variable capacitor in sealed structure having the following construction: Within an insulating case being opened at one side, a stator electrode and a rotor electrode are arranged in a state being opposed to each other through a dielectric plate. The rotor electrode is formed in one surface of a metal rotor rotatably arranged within the insulating case. The other surface of the metal rotor is directed toward the opening of the insulating case, on which other surface an adjusting groove is formed and a ring-shaped base portion of a resilient presser member is arranged in a state not obstructing the adjusting groove. Spring portions extend from the base portion of the resilient presser member, to be in contact with the other surface of the metal rotor. An annular sealing member is fixedly provided in the base portion of the resilient presser member.

Abstract: An electronic component having a rotary mechanism provided with a rotor, including a stator member and a combination component for rotating the rotor such that the rotary mechanism is mounted on the stator member. The combination component includes a plate member formed with a slot and a spring member having an engageable piece engageable with a recess of the rotor so as to be rotated together with the rotor through engagement of the engageable piece of the spring member with the recess of the rotor.

Abstract: A new low profile miniaturized air dielectric variable capacitor for use in hybrid circuits. A very cost effective, low priced variable capacitor that combines precision with a low profile is disclosed for use in hybrid circuits and other applications where space requirements are tight. The new capacitor uses a unique design to achieve an extremely low profile, less than 0.127 inches, for varying capacitive ranges. The new design is achieved by creating the stator as part of the circuit layout or design. The stator is actually formed on the surface of the substrate by a thick film metallization or by copper etching and one or many capacitors can be formed as part of the circuit layout. Thereafter, a metallic conductive housing, internally threaded, is positioned over the stator. Internal to the housing is an externally threaded rotor having an adjusting knob or screw extending through the housing.

Abstract: Disclosed is a ceramic trimmer capacitor comprising a ceramic board having a substantially semi-circular stator electrode formed on one surface thereof, which is pressed and gripped between a rotor member composed of a metal and an insulating frame, wherein a plurality of arcuate convex portions are formed on the frame on the surface thereof having abutting contact with the ceramic board so that the periphery of the rotor member is supported by the arcuate convex portions. In this ceramic trimmer capacitor, the reliability of the stability against cracking of the ceramic board and the dependency characteristic of the electrostatic capacitance on the rotor load are highly improved.

Abstract: A variable capacitor which is both mechanically and electrically tunable includes a mechanically operable rotor/stator capacitor combination; and either the rotor or stator portion of the capacitor comprises a piezoelectric assembly which becomes dished in response to a voltage applied thereto, resulting in an air gap being created between the rotor and stator elements, thus effecting a variable capacitance as a result of the voltage application.

Abstract: An electronic device such as a multi-turn trimming capacitor and potentiometer has two conductive elements and means for rotating one element with respect to the other. The rotating means includes a drive member coupled with one conductive element such that an angular displacement of the drive member with respect to the other conductive element imparts less angular displacement to the one conductive element with respect to the other conductive element. Rotation of the one element is achieved while sealing both elements from ambience.

Abstract: The invention relates to a trimming capacitor which is used as a passive construction element in electronics. The purpose of the invention is to avoid utilization of the noble metals as electrode material. The task is to find an equivalent material with the same parameters. The task is solved when the structured electrodes comprise Cu/Ni of 30 to 60% Ni, affixed at a thickness of 1.5 to 3 .mu.m. The roughness depth of the stator surface here is .ltoreq.0.7 .mu.m. The electrodes are affixed to the stator and rotor in the vacuum step by spraying at a high rate with the aid of masks.

Abstract: A disc trimmer has two circular-like segmented condenser plates which can be rotated relative to each other. The disc trimmer has an optimally low initial capacitance, which is independent of the final capacitance, and this is achieved by forming a dielectric corresponding to the shape of at least one plate circular-like and connecting it to a plate in a way that they approximately cover each other.

Abstract: A variable capacitor, wherein at least one of its stator or rotor electrode is made of aluminum alloy or copper alloy and coated with a thin dielectric material layer containing fluorocarbon resin as its principal component by means of baking, is disclosed. The disclosed variable capacitor is particularly suited for a miniaturization of an appliance which adopts this variable capacitor. Careful qualification of the electrode materials, dielectric material, additional dielectric substance, and conditions for performing the baking and layer forming operation prevent the formation of the oxide film over the surface of the electrode material, and thus ensures a firm adherence of the layer to the substrate and a large maximum capacitance of the layer.

Abstract: A trimmer capacitor is encased in an insulating case. The insulating case holds a stator terminal embedded therein. A dielectric stator is fixedly received in the insulating case and is provided with a stator electrode. The stator electrode is electrically connected to the stator terminal by contact with the exposed portion of the stator terminal within the insulating case. A metal rotor having a rotor electrode is placed on the dielectric stator. A projecting step is formed on the upper surface of the metal rotor. The projecting step is received in a throughgoing hole formed in one end of the rotor terminal and in this state the metal rotor is rotatably supported with respect to the rotor terminal. The throughgoing hole is located in the center of a dish-shaped spring portion.

Abstract: An insulating frame is formed by an insert mold such that a portion of a stator lead member is exposed from and flush with the upper surface thereof. The exposed portion of the stator lead member is plated with a metal having a low melting temperature, and the upper surface of the insulating frame is coated with an adhesive. Then, a ceramic dielectric body, which is provided at its lower side with a stator electrode, is placed on the adhesive layer. Subsequently, heat is applied to the ceramic dielectric body and the insulating frame while pressing them to each other so that the metal of the low melting point is molten to electrically connect the stator electrode and the stator lead member. The assembly is then cooled to solidify the metal of the low melting point, as well as the adhesive. Since the ceramic dielectric body is fixed to the frame by means of the adhesive, the steps of grinding and polishing of the stator electrode is eliminated advantageously.

Abstract: A trimmer capacitor includes an insulating substrate having recesses to accommodate a dielectric member having the stator electrode printed thereon. A terminal is soldered to the stator electrode and fits within a recess of the insulating plate. A rotor electrode is provided over the dielectric member. The dielectric member does not itself need to be rotated and is adequately supported and thus can be made quite thin even if brittle dielectric material such as titanium dioxide or barium tatinate is used.

Abstract: A capacitive keyswitch is formed by a flat, horizontal capacitor plate that is covered by a dielectric layer on a printed circuit board and a moveable capacitor plate that is secured to the printed circuit board by a pair of tabs and is hinged so that it projects upwardly at an acute angle with respect to the horizontal printed circuit board. The plastic plunger for actuating the switch is formed with an integrally molded cantilever overtravel arm, which preferably is formed as a segment of the circumference of a circle. The arm has an integral transversely projecting cylindrical rod at its end which contacts the moveable capacitor plate during actuation of the keyswitch.

Abstract: A variable capacitor includes a generally cylindrical insulating case made of synthetic resin, with a stator terminal, which has springiness at its contact portion, insert-molded therein. A dielectric body, having a stator electrode formed thereon, is nonrotatably housed in the insulating case along with a rotatable metal rotor having a rotor electrode, and a non-rotatable rotor terminal. The rotor terminal has springiness at its contact portion and is formed with an aperture through which the metallic rotor may be rotated for adjustment.

Abstract: A trimmer capacitor has a rotor electrode which slides on two stator electrodes which are on a substrate, one of which is a ground electrode connected to the rotor. To maintain accurate thickness in the trimmer, an insulating plate is applied under the ground stator electrode and on the top surface of the other stator electrode.

Abstract: A variable capacitor includes a container-like cylindrical casing in which a dielectric plate is rigidly placed on the bottom of the casing. A surface of the dielectric plate which is in contact with the bottom of the casing is laminated with a film of conductive material which is in turn connected to a terminal leg extending outwards from a cylindrical wall of the casing. A disc shaped rotator member is rotatably accommodated inside the casing and is enclosed by a cap member applied to the open end of the casing. A spring is provided between the rotator member and the cap member for urging the rotator member towards the dielectric plate. Another terminal leg extends from the cap member for the external connection.

Abstract: A disc trimmer capacitor has a rotor plate driven by a shaft, a dielectric layer and a stator. The shaft has a fan shaped flange with at least two protuberances to urge the rotor toward the dielectric layer.

Abstract: A tunable differential disc capacitor having a pair of outer dielectric discs and an electrically conductive rotor element, plural paired electrically conductive portions disposed on the respective dielectric discs and spring clamp means electrically and mechanically connected to respective pairs of the conductive portions. A preferred embodiment has three such pairs of conductive portions and a corresponding number of spring clamp means, so that the rotor element can be moved to various positions with respect to the conductive portions, varying the capacitance values. Electrical connection can be made to a spring clamp connected to the rotor element and to either or both of the other spring clamps, thereby obtaining one or two trimmable differential capacitors. The device can be used with the capacitors connected in series or in parallel. A sealed housing is also provided.

Abstract: A trimmer capacitor is disclosed. This trimmer capacitor comprises a rotor, a stator, a stator electrode formed in a predetermined pattern on a portion of the stator, and a stator terminal extending outward from the stator for external connection of the stator electrode. Preferably, the stator electrode and a conductive portion extending from the stator electrode to the stator terminal are formed inside of the outer periphery of the stator.

Abstract: A ceramic trimmer capacitor comprising a cylindrical casing, a stator and a rotor comprising a rotor casing and a dielectric assembly consisting of a disk-shaped ceramic dielectric member, a semicircular dielectric layer formed upon the upper surface of the dielectric member and having a low dielectric constant less than 20 and a coefficient of thermal expansion substantially equal to the dielectric member and a rotor electrode formed on the whole surface of the dielectric member including the semicircular dielectric layer, the dielectric assembly being inserted into the rotor casing and electrically and mechanically connected thereto; the stator and the rotor being placed in the cylindrical casing and resiliently supported. Stray capacitance is almost negligible; the variable capacitance range may be considerably improved; and the mechanical strength may be increased. The ceramic trimmer capacitor is especially adapted to be used in an electronic watch.

Abstract: A sealed tunable capacitor in which a capacitor assembly of metallized stator discs having a rotor plate sandwiched therebetween, said rotor plate having a post portion extending upwardly and downwardly for rotative movement thereof within central openings in said discs and said rotor post portion having a recess adapted to receive a tuning tool, is contained within a sealed plastic housing such that said rotor tuning post recess is frictionally fitted within an opening in said housing and is accessible from the exterior of said housing and said housing includes a base member frictionally fitted to retain said capacitor assembly within said housing, the leads of said capacitor assembly sealed within slots in said housing base, by frictional fitting or an adhesive or both and said housing base further sealed by a coating of an epoxy adhesive to prevent the penetration of contaminants into said capacitor assembly.

Abstract: The disclosure is directed to a variable electrical device, such as a trimmer capacitor, in which the position of one component of the device is linearly adjustable in relation to a second component of the device by means of an adjusting mechanism comprising a spiral-like groove linked to one of said components, the other component being fixed relative to an axis about which the spiral can be rotated. The spiral groove is carried by a third member which is rotatable about the aforementioned axis. A projection which is fixed relative to the first component is slidably received in the spiral groove whereby rotation of the third member causes the projection to move along the groove and hence the first member to be linearly displaced relative to the second.

Abstract: A tunable, extended range, multilayered ceramic chip capacitor for incorporation into a plurality of substrate designs of micro-miniature circuitry and hybrid integrated circuits, comprising a multilayered ceramic chip capacitor; said chip having an electrode pattern as both upper and lower electrode layers embedded within the dielectric, forming a homogeneous chip capacitor structure. The capacitance range of the said chip capacitor is extended by the addition of a rotor plate positioned over a portion of said electrode pattern by a rotor contact spring which also provides a rotor contact terminal, such that said rotor plate may be rotated over the stator portion of said electrode pattern to provide a precisely tunable extended range of capacitance, a stator terminal spring to provide means to grip said extended range chip capacitor and means for circuit connection.

Abstract: An oscillator for producing an output signal having a predetermined frequency for use in an electronic timepiece. The oscillator comprises a miniature crystal vibrator having a high resonant frequency, a case housing the crystal vibrator, an integrated circuit comprising an oscillator circuit with the crystal vibrator, and a trimmer condenser for adjusting the high resonant frequency. The trimmer condenser is formed on an external recess portion of said case, and is connected with the crystal vibrator and integrated circuit by a circuit having low stray capacitances. The oscillator is therefor highly insensitive to external electric fields.

Abstract: A variable capacitor for use in electrical and electronic equipment which includes a stator disposed on an insulating base, a stator terminal lead having an electrode portion fixed to the stator and a terminal end extending through the insulating base. The variable capacitor includes a metallic rotor rotatably disposed on the stator through a dielectric plate, a rotor terminal lead having a resilient spring portion disposed on the rotor and a terminal end extending through the base, and an insulating cap of hollow cylindrical shape fitted over the resilient spring portion of the rotor terminal lead. The insulating cap is rigidly connected to the base to form the variable capacitor of compact size with sufficiently large electrostatic capacity.

Abstract: Adjustable capacitors for incorporation with any substrate design, and for other general or specific capacitor uses, comprising a dielectric housing means, having base and sidewall eminating therefrom, a rotatable rotor (within said housing means), constructed from a highly conductive metal, having a cylindrical hub and at least one contoured blade plate emanating from the base of said hub, and a metallic retainer, coaxial with and encompassing said rotor hub, to captivate itself against said sidewall in a convex-concave relation to cover and to seal said capacitor assembly and to abut the inner portions of said blade plates to uniformly distribute plate pressure upon the active surface of said dielectric housing base. Displaced from the rotor blade plate by the dielectric housing base are contoured conductive metallized receptive stator electrode layers deposited upon or within said base for connection with receptive substrate circuitry.

Abstract: A variable capacitor is provided wherein a reinforcing plate is utilized in the rotor assembly in order to increase the range of the capacitor. The capacitor includes the stator plate and first electrode, the stator plate supporting a lead pin and a rotor positioning member, the rotor positioning member being rotatably mounted thereon. The rotor positioning member rotatably supports a uniformly thick rotor assembly in rotatable friction contact with the stator plate and first electrode. The rotor assembly includes a dielectric, a second capacitor electrode and a reinforcing plate, the thickenss of the dielectric determining the minimum value of capacitance of the variable capacitor. The rotor assembly also includes a fixed spring secured to the positioning member, the lead pin and fixed spring being adapted to facilitate use of variable capacitor in small-size electronic instrumentation.

Abstract: A rotary disc trimmer in which the rotor and stator leads have heads received in the same socket in the stator and are insulated from each other by a disc of insulating material fixed to the head of the rotor terminal and centered on the rotor shaft.

Abstract: A variable capacitor having a ceramic stator with a flat major surface for engaging a flat conductive rotor plate mounted on a shaft extending through the stator. The other major surface of the stator has a transverse slot having a capacitance forming electrode over the bottom portion that is substantially parallel to the flat major surface. A spring biased rotor terminal is affixed to the end of the shaft extending through the stator.

Abstract: A trimmer capacitor for electronic watches and other electric circuits requiring compact, low profile trimmers. The capacitor has a rigid ceramic rotor with a flat lower surface and stator of a metal clad flexible sheet of dielectric material having the metal cladding presented to and making conforming contact with the lower surface of the rotor.