A variable capacitor is formed by a multilayer circuit board having a plurality of dielectric layers; a first conductive plate, provided within the multilayer circuit board, for serving as one electrode of the variable capacitor; a second conductive plate, provided within the multilayer circuit board, for serving as the other electrode of the variable capacitor; a plurality of third conductive plates provided between the first conductive plate and the second conductive plate; and a plurality of ...

System and method for creating, configuring, representing, and using variables in programs. A graphical user interface (GUI) may be displayed in response to user input requesting creation and/or configuration of a variable for use in or comprised in one or more programs, e.g., on various devices. User input is received to the GUI configuring attributes of the variable, including: name, data type, and/or scope (e.g., local, global, or network). The configured attributes are stored and optionally ...

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...

A variable dam for a water channel having a longitudinal flow axis includes a frame having a bottom member extending across the channel and upright end members. A plurality of approximately planar plates are each connected by a pivot pin at one lower corner to a journal in the bottom member, the plates being in overlapping or staggered relationship with their respective planes approximately normal to the flow axis. The plates are movable by motors effective to rotate at least some of the pivot p...

A variable resistor having a short-circuiting member which is displaced in response to the generation of abnormally high heat in the resistance member of the variable resistor with a piece thereof in contact to short-circuit the input and output terminals of the resistance member. This results in a bypass for large current, so that a protection circuit in an output amplifier is operated to suspend the generation of heat.

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 m...

A variable resistor of modular design having a hub-flange and at least one housing frame having a central opening. A spring carrier provided with a contact spring is arranged in the central opening of the housing and is rotatable by means of an actuation shaft. A carrier plate, on which the resistor course and the collector course are mounted, is positioned adjacent the spring carrier such that the contact spring provides an electrical connection between the resistance and the collector courses....

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 ...

A variable equalizer for compensating for the frequency characteristics of transmission media, comprising a plurality of variable circuits which are connected in cascade to an input terminal and which have the same variation characteristics, coefficient circuits which receive input and output signals of the variable circuits as inputs thereof and which multiply the inputs by coefficients, a plurality of impedance circuits which receive as inputs thereof signals with outputs of the coefficient ci...

The linkage system for a variable stator vane is made to achieve different rates between stages of stators in a variable stator configuration for an axial flow compressor of a turbine type power plant. The actuator-linkage arrangement permits nesting of the actuator providing a compact design.