A voltage controlled oscillator having a first feedback path and a second feedback path. The first feedback path may include a phase shift unit (13) as necessary to compensate for an inherent phase shift provided by the resonant circuit (11) used therewith. The second feedback path includes a steering network (17) that responds to an external control signal to cause the output signal to be selectively in either of two phase relations with respect to the incoming signal. The control signal can al...

A numerically controlled device such as a numerically controlled slitter device has a plurality of units. Intervals between the units are numerically controlled to desired values by moving the units. The numerically controlled device comprises an endless belt and a stationary belt provided through the respective units, driving means for driving the endless belt under a numeral control to move the respective units and a clutch provided at the respective units. The clutch includes a forward path c...

Embodiments disclose an adjustable filter (cf voltage-controlled bandwidth) having photoconductors whose resistance is adjusted by variable-intensity radiation source means, with a related feedback loop to compensate for thermal changes.

A controlled magnetic bearing apparatus which generates a control signal based on a sensor signal from a displacement sensor for detecting a radial displacement of a rotor to suppress whirling of the rotor due to an external force synchronized with a rotational movement, and can hence support the rotor stably in a levitated state. A controlled magnetic bearing apparatus including a displacement sensor for detecting a radial displacement of the rotor, a first control unit for calculating a first ...

A valve, in particular for tank venting in motor vehicles, having a short-circuit yoke (40), having at least one valve opening (42) and having a spring-loaded valve member (50) which cooperates for opening and closing the at least one valve opening (42) and which, forming a magnet armature of an electromagnet (13), is disposed between the short-circuit yoke (40) of the electromagnet (13) and a magnet core (15) of the electromagnet (13), wherein the valve member (50) is fastened to the short-circ...

An electronic onboard refueling vapor recovery (ORVR) system including an electrically operated ORVR valve that selectively opens and closes a fuel vapor path between a fuel tank and a collection canister. An electronic control circuit generates control signals to selectively open and close the ORVR valve. The electronic control circuit receives one or more inputs from one or a plurality of sensors and evaluates the one or more inputs to determine whether to activate the ORVR valve. The sensor i...

Disclosed is an integrated voltage-controlled crystal oscillator intended to present the conditions for circuit constants in an oscillator circuit that can improve the oscillator's frequency tuning range with respect to the variable capacitance range of a variable-capacitance element. The voltage-controlled crystal oscillator comprises a crystal, an amplifier, and a load capacitor, wherein the load capacitor includes a voltage-controlled variable-capacitance element integrated on a semiconductor...

A voltage controlled delay circuit comprising n-type inverter delay circuits comprised of n-type inverters each having a PMOS transistor, as a load, with a source connected to a power supply node and with a gate to which a delay time amount control voltage is applied and having an NMOS transistor for driving, an NMOS transistor for bias with a drain-source pass connected between a ground node and a node at which sources of NMOS transistors of the inverter delay circuits each as a stage are commo...

A temperature-controlled steering wheel for heating and cooling the user's hands while steering a vehicle. The temperature-controlled steering wheel includes a steering wheel member having an arcuate channel disposed therein; and also includes an arcuate outer tubular member being disposed in the endless channel of the steering wheel member; and further includes an arcuate inner tubular member being disposed in the endless channel of the steering wheel member and the outer tubular member; and al...

An apparatus, method and kit are provided for removal of polyps, especially pursuant to colonoscopic surgery. The apparatus includes an endoscopic guide tube, a heating element, a power transmitting element traversing through the guide tube and communicating with the heating element, at least one temperature sensor for measuring temperature near the polyp, and optionally an external monitor for receiving temperature data from the sensor and then activating a power source for adjusting the temper...