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| Number | Title | Issue Date |
| 7960963 | Method and apparatus for power control by frequency spreading A method and apparatus for providing a selected amount of power from a power source to a load produce a pseudo random code sequence of different type bits, in which one type of the different type bits is used to control application of power from the source to the lo... | 06/14/2011 |
| 7876083 | Digital compensation tuning for switching power supply control A tuner having one or more digitally controllable tuning components may be coupled to an analog feedback compensation network in a target switching power supply controller to adjust the compensation while the power supply is operating. A communication interface coup... | 01/25/2011 |
| 7369386 | Overcurrent protection for solid state switching system Current sensing resistors are connected directly to output terminals of MOSFETs forming the series switching stage of a PWM sinewave dimmer. An analog sensed current signal is coupled through an EMI resistant current link to comparators that provide an overcurrent i... | 05/06/2008 |
| 7355921 | Device in a memory circuit for definition of waiting times A device for definition of the waiting time which should pass in a clock-controlled memory circuit after the start of a specific operation until a subsequent operation may be started. The device includes a digital timer which is arranged in the memory circuit, is sw... | 04/08/2008 |
| 7342372 | Method for power control of an electric motor The invention relates to a method for power control of an electric motor, in particular a motor for driving the suction fan of a vacuum cleaner connected to an AC mains power supply. The power control is effected by varying the phase angle of the electric alternatin... | 03/11/2008 |
| 7342528 | Circuit and method for reducing electromagnetic interference A spread spectrum system having a self-oscillating delay-line digital pulse width modulator and a method for mitigating electromagnetic interference. The spread spectrum system has a pseudo-random pattern generator connected to a digital-to-analog converter, which i... | 03/11/2008 |
| 7315158 | Pulse width modulation circuit A PWM circuit includes a counter, a cycle register, a cycle detector, a pulse width register, a pulse width detector, an additional pulse width register, a voltage generator, a selector, and a voltage controller. The voltage controller controls the selector so as to... | 01/01/2008 |
| 7276064 | Side-port sheath for catheter placement and translation Side-port sheaths for catheter placement and translation are disclosed. The sheaths include a side-port opening through which a gliding catheter may be deployed during diagnosis or treatment of tissue. The side-port sheath may include a suspension ribbon used to dep... | 10/02/2007 |
| 7255694 | Variable output crest factor electrosurgical generator An electrosurgical generator is disclosed capable of controlling the output crest factor, as well as the output power of the electrosurgical generator across a range of tissue impedances during electrosurgery. The control occurs automatically, in real time and conti... | 08/14/2007 |
| 7233112 | PWM switching power supply control methods The solid state switching section of a high frequency PWM switching power supply may encounter problems in accurately regulating output power when the requested output power is above a threshold level, the threshold level typically being a high level approaching one... | 06/19/2007 |
| 7227314 | Voltage equalization method and apparatus for low-voltage lighting systems A method and apparatus to equalize the voltage across each light bulb in a low-voltage lighting system, commonly found in the yards of private homes and businesses. The present invention consists of a power compensation element that is inserted in-line with each lig... | 06/05/2007 |
| 7183670 | Power supply for electronic switch A remote power switch uses the initial portion of each AC positive and negative going current pulse to generate power for the controller. This is accomplished by removing the gate signal from an electronic power delivery component at each zero cross and restoring th... | 02/27/2007 |
| 7110305 | Nonvolatile semiconductor memory device for outputting a status signal having an output data width wider than an input data width An n-bit status signal indicating an execution state of a write command is outputted from a status register. At the time of data writing, an output switching circuit outputs (n×m)-bit data in which a status signal pattern repeats m times. At the time of data readin... | 09/19/2006 |
| 7088279 | AD conversion method, AD converter, semiconductor device for detecting distribution of physical quantities, and electronic apparatus In a solid-state imaging device including an analog-to-digital converter, a clock converter that generates a high-speed clock that is faster than a master clock is provided. A voltage comparator compares a pixel signal input from a vertical signal line for each row ... | 08/08/2006 |
| 7057910 | Semiconductor device and control method In a semiconductor device for generating complementary PWM signals for, for example, controlling an inverter, a dead time is flexibly added by using a simple architecture. A dead time addition unit adds time elapsing until a value of a timer reaches a set value of a... | 06/06/2006 |
| 7047110 | Method and apparatus for controlling a power supply A method for controlling a power supply, the method comprising: forming a front-end to the power supply, the front-end comprising a plurality of digital-to-analog circuits under control of a controller; and programming the controller to control the digital-to-analog... | 05/16/2006 |
| 7042788 | Power supply circuit and semiconductor storage device with the power supply circuit A semiconductor storage device for driving a word line by a voltage higher than an external supply voltage that includes a boost circuit for outputting a boosted voltage of a first electric potential by boosting the external power supply potential, an auxiliary capa... | 05/09/2006 |
| 7038432 | Linear predictive controller A linear predictive system for a DC—DC converter including a linear predictive controller, first and second adders and a multiplier. The DC—DC converter generates an output signal and includes a digital compensation block that converts a feedback error signal in... | 05/02/2006 |
| 7034469 | Phase-control power controller with analog RMS load voltage regulation A phase-control power controller that converts a line voltage to an RMS load voltage includes an analog load voltage sensor that includes a light emitter that provides an optical output related to an RMS load voltage, and a phase-control circuit that has a compariso... | 04/25/2006 |
| 7030567 | Phase-control power controller with digital RMS load voltage regulation A phase-control power controller that converts a line voltage to an RMS load voltage includes a phase-control circuit with a potentiometer and a capacitor whose resistance and capacitance determine clipping of a load voltage, a load sensing circuit that senses the l... | 04/18/2006 |
| 6922044 | Synchronization of multiphase synthetic ripple voltage regulator A multiphase ripple voltage regulator generator employs a hysteretic comparator referenced to upper and lower voltage thresholds. The hysteretic comparator monitors a master ripple voltage waveform developed across a capacitor supplied with a current proportional to... | 07/26/2005 |
| 6906477 | Linear control device for controlling a resistive and/or an inductive and/or a capacitive load An energy savings device for an inductive, resistive or capacitive load that fluorescent lighting fixture. A setting unit allows a user to set a desired power operating level for the load, and outputs a setting signal as a result thereof. A processor receives the se... | 06/14/2005 |
| 6841983 | Digital signal to pulse converter and method of digital signal to pulse conversion A digital signal to pulse converter including a spectral spreader which provides an adjusted clock signal that does not cycle during selected cycles. The adjusted clock signal is written into a multi-port content addressable memory which, as a function of the curren... | 01/11/2005 |
| 6833535 | Method and control structure for a sensor heater A control structure and method for controlling a sensor heater including a power supply connected to a switching device for pulse width modulating a voltage from the power supply. The switching device is further connected to a resistance heater. A microcontroller ha... | 12/21/2004 |
| 6812681 | Digital dynamic trace adjustment pulse width modulate controller A digital dynamic trace adjustment pulse width modulate controller uses a core processing unit to receive a phase signal and outputs a pulse width modulate signal. It is observed that when the output voltage is rising or dropping then changing the pulse width modula... | 11/02/2004 |
| 6469457 | Power and data distribution in lighting systems Improvements to lighting systems, especially for entertainment and architectural applications are disclosed, including apparatus that permit a user to readily field-configure power distribution to branch circuits to be dimmed or un-dimmed, single- or mult... | 10/22/2002 |
| 6351692 | Method and apparatus for configuring a genset controller for operation with particular gensets A genset controller that is configurable for controlling a variety of types of gensets, as well as a method of configuring a genset controller for controlling a genset, are disclosed. The genset controller includes a memory for storing a plurality of soft... | 02/26/2002 |
| 6313618 | Method for controlling the dissipation of an electric signal and implementing device In order to implement a method of graduating the dissipation of an alternating electrical power signal, provision is made to place the position (Reg3) of a period of the alternating signal in correspondence with the binary inverse (Reg4) of a digitized se... | 11/06/2001 |
| 6285172 | Digital phase-locked loop circuit with reduced phase jitter frequency A digital phase-locked loop (DPLL) (22) for use in one or more integrated circuits (20) that may be combined within an electronic system is disclosed. The DPLL (22) includes a phase detector (30) that generates a shift clock and a shift direction signal r... | 09/04/2001 |
| 6211627 | Lighting systems Improvements to lighting systems, especially for entertainment and architectural applications are disclosed, including apparatus that permit a user to readily field-configure power distribution to branch circuits to be dimmed or un-dimmed, single- or mult... | 04/03/2001 |
| 6057674 | Energy saving power control system Apparatus and methods for AC power regulation primarily intended for inductive loads (e.g., fluorescent lights, motors, etc.) which provide substantial reduction in power consumption while also providing a leading power factor, reduced harmonic distortion... | 05/02/2000 |
| 6055163 | Communications processor remote host and multiple unit control devices and methods for micropower generation systems A communications processor is disclosed for a power generation system that permits data and control signals to be communicated to and from the power generation system and a host computer. The control signals include a power level command and power factor ... | 04/25/2000 |
| 6028421 | Method for low-transient power control of electrical loads and electrical heating apparatus A method for the low-transient power control of electrical loads, particularly temperature-dependent loads electrically divided into essentially equal sub-loads connectable to an a.c. mains in order to receive power. Power control at low power levels util... | 02/22/2000 |
| 5986440 | Load power control method using a phase control system, and device therefor A method for controlling the power of a load (1) powered from a source of AC voltage U having a period T using a phase control system, wherein, for a predetermined set power, a sequence of an integer p of elements, where p is greater than 1, is periodical... | 11/16/1999 |
| 5867017 | Energy control system with remote switching An energy control system (10) comprises at least one controllable load (110), a master controller (200), a traveler wire (300) and at least one remote switch (400). The master controller (200) transmits control commands that effect corresponding control a... | 02/02/1999 |
| 5867016 | Duty cycle based AC power control with reduced voltage fluctuations A duty cycle based AC power control method reduces objectionable voltage fluctuations at a frequency that causes "flicker" by shifting the frequency of actuations of controlled devices to frequencies significantly greater than and/or less than the flicker... | 02/02/1999 |
| 5852357 | System and method for controlling an alternating current (AC) signal A system for controlling an Alternating Current (AC) signal to an AC powered device. The system uses a microcontroller to monitor the cycles of the AC signal supplied to the AC powered device. By utilizing cycle counting, the microcontroller can supply va... | 12/22/1998 |
| 5844550 | Man-machine interface A controller for a voltage regulator has an input keypad for designating selected operating parameters of the voltage regulator. The keypad is formed with a dedicated function portion and a menu navigation portion, and the parameters are divided into firs... | 12/01/1998 |
| 5821703 | Data distribution in lighting systems A lighting system made up of a plurality of light fixtures which each produce a light beam, in which each of a plurality of varying devices, each having an input and an output, and each capable of varying at least one parameter of the light beam from at l... | 10/13/1998 |
| 5796245 | Process and device for controlling the power of a load via a phase adjustment system A method for controlling the power supplied to a load (1) which is powered by an AC voltage source U with a period T via a generalised phase adjustment system, includes the steps of periodically delivering a sequence of p elements to the load (1), in acco... | 08/18/1998 |
