Celebrity Inventors
Penn Jillette of Penn and Teller fame has patented a "Hydro-Therapeutic Stimulator", which uses a hot tub for stimulation.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7394675 | Power supplying apparatus and power supplying method A power supply operable from a plurality of alternating current inputs had having protection from abnormal operation. The power supply includes a switchable rectifier and a voltage to voltage converter. Protection circuits switch off at least one of the rectifier an... | 07/01/2008 |
| 7388765 | Method and arrangement in connection with a half-controlled network bridge A method and an arrangement for controlling phase-specific thyristors of a half-controlled network bridge, the method comprising identifying a thyristor to be controlled on the basis of the magnitude of phase voltage, controlling the thyristor by switching on a volt... | 06/17/2008 |
| 7336052 | Device for powering a variable speed drive Variable speed drive comprising a main rectifier module (10) including thyristors (K1, K2, K3) to power a main continuous bus (15) from an external power network (5), an inverter module (30) delivering a variable cont... | 02/26/2008 |
| 7330095 | Cooled multiphase choke assembly A cooled multiphase choke assembly comprising a first coil (L1, L2, L3) for each phase (U, V, W) and a first cooling element (11), each first coil (L1, L2, L3) comprising several turns of winding, which define a subst... | 02/12/2008 |
| 7301789 | Adjustable speed drive protection A protection scheme to protect pulse width modulated drives is described. The scheme is implantable in both hardware and software and combinations thereof. The semiconductor devices of the drive are protected from transient signals such as power line spikes and loss... | 11/27/2007 |
| 7236148 | Drive method of light-emitting display panel and organic EL display device Light-emitting elements disposed on a light-emitting display panel are driven by constant currents, and the forward direction voltages of the light-emitting elements are obtained by a sampling/holding circuit. Then, the voltage output from a drive voltage source com... | 06/26/2007 |
| 7190124 | Two-wire dimmer with power supply and load protection circuit in the event of switch failure A dimmer circuit provides AC power to an inductive lighting load in series with the dimmer circuit. A bidirectional semiconductor switch has a control electrode with a control signal for determining the power provided to the load. The switch in normal operation is c... | 03/13/2007 |
| 7187569 | Signal generation apparatus and method for seafloor electromagnetic exploration An apparatus for generating electronic signals for application in subsea electromagnetic exploration. A surface generated high-voltage low-current source signal stabilized at a first frequency is supplied to a deep-tow vehicle (18) via an umbilical cable (... | 03/06/2007 |
| 7173834 | Half-controlled silicon-controlled rectifying system and method thereof A half-controlled silicon control rectifying system and method thereof are provided. In this case, the first detection unit detects the zero cross phase of the triphase AC in input port thereof. The second detection unit detects the voltage of the DC bus. Then the c... | 02/06/2007 |
| 7164253 | Motor drive control apparatus On end of a reactor (L1) is connected to a positive electrode of a battery (B1) and the other end is connected to a power line via a transistor (Q1) and to the ground via a transistor (Q2). By PWM control of the transistors (Q1, Q | 01/16/2007 |
| 7141894 | Apparatus for providing high quality power The system disclosed herein is primarily utilized in the 23–48 volt DC telco, data center and industrial production industry. It will effectively replace today's requirement of purchasing, installing, maintaining and replacing chemical storage batteries. The solut... | 11/28/2006 |
| 7132880 | High bandwidth, high PSRR, low dropout voltage regulator A voltage regulator may include one or more features for generating high PSRR. For example, source follower devices may be included in the voltage regulator for providing current sources for the output voltage nodes. The source followers may be sensitive to power su... | 11/07/2006 |
| 7124691 | Method for monitoring and controlling locomotives The present invention is directed to a locomotive comprising energy storage units, such as batteries, a prime energy source, such as a diesel engine, and an energy conversion device, such as a generator. The locomotive comprises one or more of the following features... | 10/24/2006 |
| 7122994 | Control apparatus for a starter/generator system A control apparatus (202) for a starter/generator (110) of an aircraft electrical power system is provided. During a start mode of operation, AC power is provided by the control apparatus (202) to an exciter stator (114) of the starter/ge... | 10/17/2006 |
| 7072196 | Multi-stage high voltage solid state switch A method for triggering a high voltage solid state switch comprised of a set of thyristors connected in series. Initiating switch turn-on requires command triggering of only the lowest voltage thyristor, thereby eliminating the need for expensive high voltage pulse ... | 07/04/2006 |
| 7062160 | Monitoring current in a motor during acceleration to verify motor frequency lock Method and apparatus for accelerating a motor from an intermediate velocity to a final operational velocity. The motor is accelerated from rest to the intermediate velocity through application of fixed duration drive pulses to the spindle motor. Once the motor reach... | 06/13/2006 |
| 7050313 | Aircraft AC-DC converter An AC-DC converter includes a DC reference voltage generation unit that creates a DC reference voltage waveform based in part on a feedback signal. The AC-DC converter also includes an SCR firing unit that receives a variable frequency power output from the generato... | 05/23/2006 |
| 7019497 | Circuits and methods for synchronizing non-constant frequency switching regulators with a phase locked loop Methods for synchronizing non-constant frequency switching regulators with a phase locked loop are disclosed. The methods enable non-constant frequency switching regulators to be synchronized with a phase locked loop to achieve constant frequency operation in steady... | 03/28/2006 |
| 7012793 | Power converter with polarity reversal and inrush current protection circuit A power converter for converting an input power into a desired output power adapted to a power-receiving device. The power converter includes a polarity reversal protection circuit preferably constructed with a schottky diode that is used to ensure the correct conne... | 03/14/2006 |
| 7009828 | Semiconductor switching device Self-quenching switching elements are connected in series in a semiconductor switching device. Snubber circuits including a diode, a capacitor, and a non-linear circuit are connected in parallel with the respective semiconductor switching elements. In the snubber ci... | 03/07/2006 |
| 6977487 | Vehicular alternator failure determination apparatus using commutating device voltage A vehicular alternator failure determination apparatus is capable of making a failure determination accurately. The apparatus includes a maximum voltage detection part (1) for detecting a maximum voltage of an alternator commutating device which commutates an... | 12/20/2005 |
| 6958923 | Rectifying circuit The invention relates to a rectifying circuit comprising a bridge connection with RC protected thyristors, a direct voltage circuit with capacitance and a charging circuit containing a diode (3) or a corresponding component for charging the capacitance of the... | 10/25/2005 |
| 6952297 | Method of differentially connecting photonic devices A method and apparatus are provided for driving an electro-optic converter assembly with an information signal. The method includes the steps of disposing a resistor having a resistance substantially equal to a resistance of the electro-optic converter adjacent the ... | 10/04/2005 |
| 6940249 | Inverter device An inverter device capable of smoothly driving an alternating current synchronous motor of large capacity and high-speed rotation is provided. The inverter device includes a power rectification main circuit for converting alternating current power into direct curren... | 09/06/2005 |
| 6934169 | Method of controlling half-controlled rectifier, and rectifier structure A method of controlling a half-controlled rectifier, and a rectifier structure, which comprises an n-phased half-controlled converter bridge, a DC intermediate circuit and a capacitor of the DC intermediate circuit. The converter structure further comprises an auxil... | 08/23/2005 |
| 6914476 | High bandwidth, high PSRR, low dropout voltage regulator A voltage regulator may include one or more features for generating high PSRR. For example, source follower devices may be included in the voltage regulator for providing current sources for the output voltage nodes. The source followers may be sensitive to power su... | 07/05/2005 |
| 6724643 | Control system and method employing active temperature balance for controlling rectifier bridge A method for controlling a parallel array of rectifier bridges includes outputting control signals to repetitively fire bridge elements; skipping repetitive firing of the elements for one out of plural counts; sensing temperatures of the elements; averaging some of ... | 04/20/2004 |
| 6704214 | Excitation control system and method employing de-excitation trip logic An excitation control system includes a circuit breaker, a bridge and a controller. The bridge converts AC phases from the breaker to an excitation voltage. The controller includes an output to open the breaker, a first sub-system inputting voltages corre... | 03/09/2004 |
| 6618276 | Power supplies having protection circuits A power supply including an inverter receiving a DC input signal from a DC input source (11). The inverter is comprised of two half bridges (S1A, S2A and S1B, S2B). Each inverter is driven by a signal source (13A, 13B), which outputs an AC signal. The out... | 09/09/2003 |
| 6611443 | High voltage converter system A high voltage converter system including a high voltage power line at a first voltage level, a step-down device connected to a second voltage level lower than the first voltage level, and a high voltage switch module including a plurality of voltage limi... | 08/26/2003 |
| 6567253 | Apparatus to sense a silicon controlled rectifier short circuit An apparatus to sense an SCR short circuit failure and prevent overheating of solid-state power supply equipment, such as a welder, during an occurrence of the short circuit failure is provided. The apparatus includes a detector circuit capable of sensing... | 05/20/2003 |
| 6563722 | System and method for compensating for line imbalances in line commutated converters A method and system for compensating for line imbalances in line commutated converters. The controller includes a phase-locked loop (PLL) synchronizing tool which receives the line to line voltage signals and generates firing angle and frequency signals u... | 05/13/2003 |
| 6493245 | Inrush current control for AC to DC converters The present invention provides for an apparatus and corresponding method for controlling inrush current in an AC-DC power converter by controlling the state of a plurality of silicon-controlled rectifiers (SCRs) when AC power is lost. The present inventio... | 12/10/2002 |
| 6442049 | Power conversion device with power source voltage drop detection unit In a power conversion device according to the present invention, an AC power source voltage signal Vac which is the instantaneous value of AC power source 1 detected by a power source voltage detection circuit comprising a transformer 5, rectifier 6 and A... | 08/27/2002 |
| 6385066 | Method and system for detecting a zero current level in a line commutated converter A method and system for determining zero current level occurrences in a reversible power converter without requiring additional component complexity and costs. A digital controller selectively determines the line to line voltage for the most recently fire... | 05/07/2002 |
| 6246597 | A.C./D.C. converter having a linearly controllable one-way switch, and using no high voltage passive components A converter of a high A.C. voltage into a low D.C. voltage, including a one-way switch between a first terminal of application of the A.C. voltage and a first positive output terminal, and circuitry for controlling the output voltage to a desired value, t... | 06/12/2001 |
| 6204493 | Fault tolerant electric current regulator The present invention is a fault tolerant apparatus for regulating the flow of electricity. The apparatus comprises a light radiating circuit which includes a first light source for radiating a first light signal, a second light source for radiating a sec... | 03/20/2001 |
| 6163471 | Damping of an oscillation in a plant for transmission of high voltage direct current A plant for transmission of high voltage direct current is coupled to an alternating current network (3) with a fundamental frequency (.function.), and has a control equipment (CEQ) and a direct current link (5). A device (76) for damping an oscillation i... | 12/19/2000 |
| 6134128 | Method for protecting a high-performance power converter and a protection arrangement for executing the method A method and apparatus for protecting a high-performance power converter. The high-performance power converter comprises a mains power converter, which converts an alternating voltage from a mains power supply into a direct voltage and supplies the direct... | 10/17/2000 |
| 6084787 | Device for supervising in a high voltage converter station A device for supervising different positions of a valve of a high voltage converter station located on a high voltage potential level comprises members arranged on a high voltage potential level and adapted to detect function parameters of the valve on a ... | 07/04/2000 |
