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8183947 Low power consuming quartz oscillator circuit with active polarisation  
The quartz oscillator circuit includes an inverter comprising two complementary PMOS and NMOS transistors (P1, N1) series-mounted with a current source (4) between two terminals of a supply voltage...
8154355 High-frequency colpitts circuit  
A high-frequency Colpitts circuit having a feedback transistor Q2 in addition to an oscillation transistor Q1 is provided, wherein a collector of the transistor Q1 is connected to a base of the...
8143963 Voltage source circuit for crystal oscillation circuit  
A voltage source circuit for a crystal oscillation circuit is provided, in which the voltage source circuit and the crystal oscillation circuit are formed with the same process. The voltage source...
8120437 Oscillator with little deterioration capable of outputting clock pulses with target frequency  
An oscillator includes: a vibrator having a first electrode and a second electrode disposed with a gap with the first electrode; a reference voltage supply circuit adapted to supply a reference...
8115562 Oscillation circuit and method of controlling same  
Disclosed is an oscillator in which current consumption relating to oscillation is reduced. The oscillator comprises: an amplifier to an input and output of which a piezoelectric oscillator and a...
8089325 Oven controlled multistage crystal oscillator  
An object of the invention is to provide an oven controlled crystal oscillator that prevents a reduction in characteristics due to temperature rise in the crystal vibrator and circuit elements...
8085105 Constant-temperature type crystal oscillator  
A constant-temperature type crystal oscillator includes: a crystal unit including a case main body including a first power source terminal on an outer bottom surface thereof; a surface-mounted...
8076983 Constant-temperature type crystal oscillator  
A constant-temperature type crystal oscillator includes: a crystal unit including a case main body, in which two crystal terminals and two dummy terminals are provided on an outer bottom face...
8072278 System and method for reducing power consumption of an oscillator  
An apparatus for generating an oscillating signal including a negative-resistance circuit, a crystal, and a component to modify a series resonance of the crystal to decrease power consumption of...
8072279 Crystal oscillator with pedestal  
An object of the invention is to provide an oscillator with a pedestal that facilitates soldering operations and offers a high level of productivity. A surface mount crystal oscillator with a...
8067993 Constant current driven oscillating circuit  
There is provided a constant current driven oscillating circuit including: an oscillator with first and second ends; a first field effect transistor that turns ON when a signal of a lower level...
8067994 Surface mount type crystal oscillator  
There is provided a configuration in which a lead-out electrode that extends out from an excitation electrode provided on a lower surface of a crystal piece facing an inner bottom surface of a...
8044731 Oscillator circuit  
There is provided an oscillator circuit including: a current source; a resonant unit; an oscillation amplification unit connected to the current source and connected in parallel to the resonant...
8040197 Crystal oscillator  
A crystal oscillator includes a crystal unit and a voltage-variable capacitive element that is connected to the crystal unit in series, the crystal oscillator varying an oscillation frequency by...
8022777 Ovenized crystal oscillator assembly  
An oscillator assembly including an oscillator seated on a pad of thermally conductive material formed on the surface of a printed circuit board and covered by a lid defining an oven for the...
8018292 Oscillator and communication system using the same  
A transfer impedance from input terminals of a resonator to output terminals of the resonator is larger than a driving-point impedance of the input terminals of the resonator at an oscillation...
8013683 Constant-temperature type crystal oscillator  
A constant-temperature type crystal oscillator includes: a crystal unit that is installed on one principal surface of a circuit substrate, and chip resistors, which function as heating elements,...
7986194 Oscillator  
An oscillator, includes an amplifier circuit including a semiconductor element having a first constant potential as reference potential for a power supply voltage, a variable capacitance element, a...
7978016 Crystal oscillator  
A crystal oscillator is provided to secure a space for housing the IC and electronic components, even if the vibrator is small in size. In this crystal oscillator, there is not a hindrance to the...
7961055 PLL circuit and oscillator device  
A phase locked loop circuit includes an oscillator part configured to generate a reference signal by amplifying a signal generated by an oscillator, and a phase locked loop part configured to...
7940138 Electrostatic discharge protection oscillation circuit in LSI  
An oscillation circuit according to the present invention comprises a solid-state oscillator, an amplifier for feedback-controlling the solid-state oscillator, and ESD protecting circuits...
7924108 Oscillator amplifier with input clock detection and method therefor  
An oscillator circuit has a crystal oscillator amplifier having only two clock input terminals, one being an input terminal and the other being an output terminal. The input terminal allows a user...
7888984 Intermittent operation circuit and modulation device  
There is provided a small-size, low-power-consumption intermittent operation circuit capable of obtaining an output waveform having a rapid rise and fall. The intermittent operation circuit...
7880553 Oscillation circuit with temperature compensation  
An oscillation section for which an output frequency is controlled based on a control signal depending on an ambient temperature; a temperature compensation circuit for supplying the control signal...
7863993 Oscillator for providing oscillation signal with controllable frequency  
An oscillator, including amplifier circuitry and resonant circuitry, for providing an oscillation signal with a controllable frequency while maintaining a substantially constant steady state...
7855609 Ultrasonic transducer driving circuit and ultrasonic diagnostic apparatus  
With the aim of suppressing power consumption and reducing circuit size, a positive FET is turned on in accordance with a positive pulse signal and turned off when a return voltage rises up to a...
7839228 Low-noise high-stability crystal oscillator  
Circuits, methods, and apparatus that provide low-noise, high-stability crystal oscillators having controlled-amplitude differential output signals and DC level control. A crystal oscillator...
7834710 Oscillator circuit and electronic device having oscillator circuit  
An oscillator circuit includes a first terminal, a second terminal, a resonator that is connected to the first terminal and the second terminal, a first capacitor that is connected to the first...
7821348 Crystal oscillator for surface mounting  
A crystal oscillator includes an oscillator circuit, a main body, a first switching circuit, a second switching circuit, and a voltage detecting circuit. The oscillator circuit includes an IC chip...
7808334 Oscillation driver circuit, oscillation driver device, physical quantity measurement circuit, physical quantity measurement device, and electronic instrument  
An oscillation driver circuit that drives a physical quantity transducer includes a one-input/two-output comparator. The one-input/two-output comparator includes a shared differential section that...
7804374 Feedthrough capacitance compensation for resonant devices  
A device has a resonator coupled to input and output nodes, the resonator being characterized by a transducer to drive the output node, and further characterized by a feedthrough capacitance such...
7777584 Clock signal generator  
The present invention provides a clock signal generator capable of reducing current consumption and stably outputting a clock signal early. When it is discriminated that the amplitude of an...
7768358 Oscillatory signal output circuit for capacitive coupling an oscillating signal with bias voltage applied  
Oscillatory signal output circuitry includes a bias circuit generating a bias voltage, which is applied to an amplifier and an oscillatory circuit to generate an oscillatory signal. The oscillatory...
7768360 Crystal oscillator emulator  
A crystal oscillator emulator integrated circuit, comprises a first temperature sensor that senses a first temperature of the integrated circuit; memory that stores calibration parameters and that...
7768359 Low phase noise differential crystal oscillator circuit  
A differential crystal oscillator circuit uses a bias transistor to generate a bias voltage from a bias current. The bias voltage is supplied to the control terminals of a differential pair of...
7760034 Surface-mount type crystal oscillator  
A surface-mount type crystal oscillator has: a container body having a bottom wall and a frame wall having an opening and provided on one principal surface of the bottom wall; a quartz crystal...
7760039 Crystal oscillator emulator  
A crystal oscillator emulator integrated circuit comprises a first temperature sensor that senses a first temperature of the integrated circuit. Memory stores calibration parameters and selects at...
7746184 Bonding-type surface-mount crystal oscillator  
A crystal oscillator has: a crystal unit having a container body in which a crystal blank is housed and hermetically sealed; and a mounting substrate that houses an IC chip having at least an...
7733190 Oscillation circuit and oscillator  
An oscillation circuit includes a cross-coupled circuit having a first active element and a second active element which are differentially connected to each other. The oscillation circuit...
7724101 Crystal oscillator circuit with amplitude control  
A crystal oscillator circuit includes a capacitive load stage coupled to a crystal; an amplifier stage including an amplifying transistor coupled to the crystal and to the capacitive load stage for...
7719372 Voltage controlled piezoelectric oscillator that can be linear frequency controlled  
A variable capacitance unit that configures a voltage controlled piezoelectric oscillator including a first variable capacitance diode, a first condenser connected in parallel with the first...
7714674 System and method for calibrating bias current for low power RTC oscillator  
The integrated circuit package includes a processing core for operating on a set of instructions to carry out predefined processes. A real time clock circuit provides a system clock for the...
7710211 Injection-locked frequency divider with a wide injection-locked frequency range  
An injection-locked frequency divider includes a signal injection circuit and colpitts VCO. The signal injection circuit is for injecting an injection signal. The colpitts VCO includes first and...
7692505 Crystal oscillator  
A crystal oscillator in which phase noise is reduced includes: a resonance circuit having a crystal unit and split capacitors connected to the crystal unit; a transistor for oscillation having a...
7692506 Oscillation driver device, physical quantity measuring device, and electronic instrument  
An oscillation driver device includes a gain control amplifier, an automatic gain control circuit, and a mode setting circuit. When the mode setting circuit has switched a mode from a normal...
7688154 Amplitude regulated crystal oscillator  
To maintain the amplitude of an oscillating signal within a defined range, the detected peak level of the oscillating signal is compared to a reference voltage. If the detected peak level is...
7683728 Oscillation circuit  
An oscillation circuit according to the present invention comprises a solid-state oscillator, an amplifier for feedback-controlling the solid-state oscillator, and ESD protecting circuits...
7675375 Electrical oscillator circuit and an integrated circuit  
An electrical oscillator circuit comprising: a resonator comprised in the first subcircuit; and an active device comprised in the second subcircuit connected to energize the resonator to provide an...
7649426 Apparatus and method for temperature compensation of crystal oscillators  
An oscillator includes an oscillator circuit and a resonator that produces an output frequency. A temperature compensation circuit is coupled to the oscillator circuit. The temperature compensation...
7598821 Amplitude controlled quartz oscillator with broad voltage and temperature range  
The invention concerns an oscillator including an input terminal, an output terminal, a resonator, and an oscillator circuit including: first and second power supply terminals, two capacitors...
Matches 1 - 50 out of 409 1 2 3 4 5 6 7 8 9 >