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| Number | Title | Issue Date |
| 7577002 | Frequency hopping control circuit for reducing EMI of power supplies A control circuit having frequency hopping capability is used for reducing the EMI of a power supply. A switching circuit is coupled to a feedback circuit to generate a switching signal for regulating an output of the power supply. A first oscillator determines the ... | 08/18/2009 |
| 7343147 | Method and apparatus for powering and loading software into a battery-less electronic device Automated software loading into a battery-less mobile phone is accomplished through attachment of a special non-standard USB On-The-Go cable to a serial connector of the mobile phone, thereby delivering power supply and unique signals for placing the phone in a spec... | 03/11/2008 |
| 7215035 | Method and apparatus for converting wind generated electricity to constant frequency electricity for a utility grid A method and apparatus for converting wind generated electricity to constant frequency electricity for supplying it to a utility grid. use a wind turbine generator having a doubly fed induction generator. Above the synchronous speed of the generator, the electricity... | 05/08/2007 |
| 7023152 | Driving control device for actuator A driving control device for an actuator comprises a driving device to drive an actuator having an electric motor (30) and a driving control device (50) to control the rotation of the electric motor (30) by controlling the driving device. The dr... | 04/04/2006 |
| 7015673 | Method and apparatus for reducing generated heat in three-phase motors driving air circulation fans in large industrial refrigerators and freezers A method and apparatus is disclosed for reducing the heat generated by three-phase motors operating under load in cooled chambers such as industrial walk-in refrigerators and freezers. Specific control elements are introduced into the three power conductors connecte... | 03/21/2006 |
| 6967429 | Power output stage for capacitive loads A power output stage for capacitive loads includes: an energy storage inductance, having one end connected to a reference potential and an opposite end connected on the input side to a power supply connection and on the output side... | 11/22/2005 |
| 6946824 | Power delivery system having a plurality of stages and method for setting power delivery system parameters A power delivery system and a method for setting the parameters of the power delivery system. The effective resistance of the capacitors for each stage may be set to be substantially equal to the effective resistance of the previous stage, and the time capacitive co... | 09/20/2005 |
| 6880168 | Chat application for video game machine The present invention allows users to open and join a chat by means of a simple procedure from a video game machine, the present invention includes creating an opening message for opening an electronic conference and creating an opening request signal for setting an... | 04/12/2005 |
| 5757631 | Converter apparatus with reversible driving of a switching transistor A converter apparatus that is operated with a pulse-width modulated drive signal with constant in the normal operating case and is operated with a frequency-modulated drive signal with constant pulse width in case of overload or, respectively, light load.... | 05/26/1998 |
| 5642003 | Power system switch incorporating a positive-sequence fundamental signal magnitude detector A power switching apparatus includes a positive-sequence fundamental signal magnitude detector. The positive-sequence fundamental signal magnitude detector derives a positive-sequence fundamental signal from a three-phase voltage signal carried by a power... | 06/24/1997 |
| 5536976 | Multiple service load solid state switching for controlled cogeneration system An electrical generation system and method for switching a plurality of isolated circuits between a generator and an electrical source. A current signal of each isolated circuit is sensed and the current signal is emitted to a computer. A generator output... | 07/16/1996 |
