Involving Resonant Or Inductive Wave Forming Circuit Or Transformer Patents (Class 331/151)
  • Patent number: 8606376
    Abstract: A method of actuating a system comprising a movable component and an actuator configured to move the movable component comprises providing a control signal representative of a desired motion of the movable component. The control signal is supplied to one or more resonators. Each of the one or more resonators has a mode of oscillation representative of at least one elastic mode of oscillation of the system. The control signal is modified by subtracting from the control signal a signal representative of a response of the one or more resonators to the control signal. The actuator is operated in accordance with the modified control signal. Thus, undesirable elastic oscillations of the system which might occur if the system were operated with the original control system can be reduced.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: December 10, 2013
    Assignees: Mitutoyo Corporation, Bundesrepublik Deutschland, Endvertreten Durch den Präsidenten der Physikalisch-Technischen Bundesanstalt
    Inventors: Hartmut Illers, Kazuhiko Hidaka, Akinori Saito, Hans-Ulrich Danzebrink
  • Patent number: 8165550
    Abstract: A broad oscillation frequency range and good phase noise characteristic are achievable simultaneously by an oscillation circuit and a resonance circuit connected to the oscillation circuit. The resonance circuit includes an inductor element connected to the oscillation circuit, a first variable capacitance section connected to the inductor element, and a second variable capacitance section connected in parallel to the first variable capacitance section. The first variable capacitance section includes a first variable capacitive element connected to the inductor element, and a second variable capacitive element connected in parallel to the first variable capacitive element. The first variable capacitive element changes its capacity value based on a control voltage and a first reference voltage. The second variable capacitive element changes its capacity value based on the control voltage and a second reference voltage.
    Type: Grant
    Filed: March 7, 2008
    Date of Patent: April 24, 2012
    Assignee: Panasonic Corporation
    Inventors: Takeshi Fujii, Yasuo Ooba, Mineyuki Iwaida, Hiroaki Ozeki
  • Patent number: 7750692
    Abstract: Digital divider for low voltage LOGEN. LOGEN is a local oscillator generator. One implementation presented herein provides for a pseudo-complementary metal-oxide-semiconductor (CMOS), in that, it is not a true CMOS type circuitry that has no DC current dissipation, but nevertheless does operate well at relatively high frequencies and relatively low power supply voltage levels. Appropriately placed p-channel metal oxide semiconductor field-effect transistors (P-MOSFETs) and n-channel MOSFETs (e.g., N-MOSFETs) are employed to provide for an all digital divider circuitry. In some embodiments, four active circuitry element levels are stacked between a power supply voltage and ground voltage level. In other embodiments, three active circuitry element levels are stacked between a power supply voltage and ground voltage level. The three active circuitry element levels embodiment provides for a greater area savings (e.g.
    Type: Grant
    Filed: December 22, 2007
    Date of Patent: July 6, 2010
    Assignee: Broadcom Corporation
    Inventor: Behnam Mohammadi
  • Patent number: 7639095
    Abstract: A system includes a first and second circuit electromagnetically coupled to establish a contact-less transmission, for example, between a vehicle body and a removable seat of the vehicle body. The first circuit includes a first inductor and the second circuit includes a second inductor. In order to detect in the first circuit the status of one or more input signals of the second circuit, the second circuit includes a signal generating portion including a resistor and a capacitor that generates, a time-pulsed signal. The second circuit is adapted to set a value of at least one of the resistor and the capacitor based on a sensed parameter and sets a duty cycle of the time-pulsed signal based on a value of at least one of the resistor and the capacitor. The time-pulsed signal changes a load of the second circuit over time which can be detected in the first circuit.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: December 29, 2009
    Assignee: Tyco Electronics Belgium EC N.V.
    Inventors: Tom Ocket, Joeri Fryns, Jan Van Cauwenberge, Michael Siotto
  • Patent number: 7256920
    Abstract: A modulator circuit (28) for directing a voltage across a modulator element (26) to modulate a beam (20) includes a first inductor L1 that is electrically connected in parallel to the modulator element (26) and a second inductor L2 that is electrically connected in parallel to the first inductor L1 and the modulator element (26). A resonant frequency of the modulator circuit (28) is controllable over a range of between approximately 200 and 380 MHz. Additionally, the modulator circuit (28) can include a third inductor L3 that is electrically connected in parallel to the inductors L1, L2, and the modulator element (26). Further, the modulator circuit (28) can include an added capacitor (546) that is electrically connected in parallel to the inductors L1, L2, and the modulator element (26).
    Type: Grant
    Filed: October 30, 2004
    Date of Patent: August 14, 2007
    Assignee: Bookham Technology plc
    Inventor: Eduardo Tinoco
  • Patent number: 7110738
    Abstract: A tunable element in the microwave frequency range is described that may include one or more tunable elements that are directly digitally controlled by a digital bus connecting a digital control circuit to each controlled element. In particular, each digital signal is filtered by a digital isolation technique so that the signal reaches the tunable elements with very low noise. The low noise digital signals are then converted to analog control voltages. The direct D/A conversion is accomplished by a special D/A converter which is manufactured as an integral part of a substrate. This D/A converter in accordance with the invention may consist of a resistor ladder or a directly digitally controlled capacitor. The direct digitally controlled capacitor may be a cantilevered type capacitor having multiple separate electrodes or sub-plates representing binary bits that may be used to control the capacitor.
    Type: Grant
    Filed: October 10, 2002
    Date of Patent: September 19, 2006
    Assignee: Bridgewave Communications, Inc.
    Inventor: Eliezer Pasternak
  • Patent number: 6903617
    Abstract: A semiconductor package includes a package substrate and an integrated circuit. The package substrate has a first surface. The integrated circuit couples electrically to the first surface of the package substrate. The integrated circuit and the package substrate together form the semiconductor package. The semiconductor package also includes a first inductance circuit and a second inductance circuit, both formed within the semiconductor package. The first and second inductance circuits couple to each other in parallel. The first and second inductance circuits have substantially symmetrical geometric characteristics.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: June 7, 2005
    Assignee: Silicon Laboratories Inc.
    Inventors: Lysander Lim, David R. Welland, John B. Pavelka, Edmund G. Healy
  • Patent number: 6894575
    Abstract: A high-voltage oscillator including a first normally-on switch in series with a resonant circuit, a second normally-on switch in parallel with the resonant circuit, and a control circuit preventing the simultaneous conduction of the two switches.
    Type: Grant
    Filed: December 19, 2002
    Date of Patent: May 17, 2005
    Assignee: STMicroelectronics S.A.
    Inventor: Laurent Moindron
  • Publication number: 20030218697
    Abstract: A broadband television receiver front end for receiving a broadband RF input signal and outputting an IF output signal is disclosed. A high pass input filter on the front end attenuates carrier signal frequencies that lie below a cut off frequency of said high pass filter. Thereby advantageously allowing for a number of carrier signals to propagate below the cutoff frequency in such a manner that these signals have a decreased effect on television signals propagating within a television signal band. By high pass filtering on the input a low noise amplifier disposed for receiving a filtered signal from the high pass filter does not amplify noise caused by lower frequency carriers. As a result an amplified signal provided to up-conversion and a down-conversion mixers results in an increased immunity to noise in the output IF signal from the front end.
    Type: Application
    Filed: May 2, 2002
    Publication date: November 27, 2003
    Inventor: Kovacic Stephen J.
  • Patent number: 6225872
    Abstract: A resonator includes a resonating device and a selection circuit for selecting a resonance mode. The selection circuit is formed by a first-order oscillator which is provided with a synchronization input and whose output is connected to the excitation input of a resonator, the output of the resonator being connected to the synchronization input of the first-order oscillator in order to synchronize the oscillator and the output signal of the resonator being derived from the oscillator.
    Type: Grant
    Filed: November 5, 1999
    Date of Patent: May 1, 2001
    Assignee: Technische Universiteit Delft
    Inventor: Christiaan Johannes Maria Verhoeven
  • Patent number: 5264809
    Abstract: A proximity switch which can detect any metal with equal changing rate of oscillating frequency, regardless of what kind of metal it may be (magnetic or nonmagnetic), is disclosed. The invention employs a series circuit consisting of a resistor and a first capacitor connected to the output side of a comparator. A detector coil and a second capacitor are connected in parallel to the first capacitor. By selecting appropriate capacitance and resistance values for these components, it can be insured that the change in oscillating frequency corresponding to the distance of an approaching object will be very nearly be identical regardless of the type of metal of which the object is constituted. An embodiment employing a frequency to voltage converter is also disclosed. The arrangement provides continuous detection also suitable for use in range indicator and self diagnosis applications.
    Type: Grant
    Filed: October 14, 1992
    Date of Patent: November 23, 1993
    Assignee: Omron Corporation
    Inventor: Shinya Tamino
  • Patent number: 4818953
    Abstract: An improved oscillator circuit for avoiding core saturation without the need for auxiliary magnetic devices employs an emitter resistance for regulating base voltage, and a semiconductor base shunt for initiating transistor cut-off when the base voltage increases above the threshold voltage of the semiconductor shunt, the emitter resistance being preselected to activate the base shunt before the transformer core reaches saturation.
    Type: Grant
    Filed: April 7, 1988
    Date of Patent: April 4, 1989
    Assignee: Genlyte Group, Inc.
    Inventor: Robert S. Feldstein
  • Patent number: 4472755
    Abstract: Disclosed is a ring magnet control circuit that permits synchrotron repetition rates much higher than the frequency of the cosinusoidal guide field of the ring magnet during particle acceleration. the control circuit generates cosinusoidal excitation currents of different frequencies in the half waves. During radio frequency acceleration of the particles in the synchrotron, the control circuit operates with a lower frequency cosine wave and thereafter the electromagnets are reset with a higher frequency half cosine wave. Flat-bottom and flat-top wave shaping circuits maintain the magnetic guide field in a relatively time-invariant mode during times when the particles are being injected into the ring magnets and when the particles are being ejected from the ring magnets.
    Type: Grant
    Filed: August 26, 1983
    Date of Patent: September 18, 1984
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventor: Walter F. Praeg
  • Patent number: 4416365
    Abstract: An apparatus for coin testing including an improved inductive sensing arrangement. A coin to be tested is passed through an electromagnetic field produced by an inductor which is part of a resistor-inductor type relaxation oscillator operating at a frequency in the range of approximately 100 kHz to 1 MHz. The resulting shift in frequency of the relaxation oscillator forms the basis for testing the coin. The resistor-inductor relaxation oscillator has a linear frequency response with respect to changes in the effective inductance in the oscillator over a range of inductance suitable for testing coins and produces an output signal which is digital in nature and requires no amplitude discrimination or shaping to be suitable for counting.
    Type: Grant
    Filed: August 21, 1981
    Date of Patent: November 22, 1983
    Assignee: Mars, Inc.
    Inventor: Frederic P. Heiman
  • Patent number: 4348649
    Abstract: A self-pulsing microwave generator with a quarter-wave resonator separated y an electron transit space from a field emission cathode is provided. The quarter-wave resonator acts as an anode and a DC voltage is supplied by a discharge capacitor and a DC current source. The application of DC voltage to the resonator causes the resonator to resonate at a selected frequency dependent upon the size and characteristic of the resonator. The discharge capacitor is discharged by the resonator-cathode combination until the voltage drops below the field emission threshold voltage of the cathode at which time the pulse terminates. The resonator is in the shape of a cone to decrease the interelectrode capacitance.
    Type: Grant
    Filed: August 8, 1980
    Date of Patent: September 7, 1982
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventor: Dieter R. Lohrmann
  • Patent number: 4241317
    Abstract: The resistance-inductance element used to determine the frequency of the frequency generator in the prior art circuits is replaced by an inductance-capacitance combination. As in the prior art circuits the frequency determining circuit is connected between the output and the inverting input of an operational amplifier to whose direct input a reference voltage is applied. However in the present circuit an inductance is connected from the output to the inverting input of the operational amplifier and a capacitance-resistance circuit is connected in parallel with the inductance. A capacitance connects the inverting input of the operational amplifier to ground potential. Resistors connected from the inverting input to the positive voltage supply and to the output terminal from the inverting input and from the direct input are used to change the slope of the curve of frequency vs. inductance.
    Type: Grant
    Filed: February 16, 1979
    Date of Patent: December 23, 1980
    Assignee: Robert Bosch GmbH
    Inventor: Wolfram Breitling