Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 8102166 | Power source device and output voltage stabilizing method A power source device includes: a switching section switching an input voltage supplied to a load section; a smoothing inductor section smoothing and outputting an output current to be supplied to the load section in accordance with a switching of the switching sect... | 01/24/2012 |
| 7839132 | Power converter A power converter comprising an inductor for receiving energy from a power supply, and connected to the inductor an output capacitor for providing an output voltage. In order to ensure a quick compensation of a reduction of load at the voltage output using few outpu... | 11/23/2010 |
| 7786716 | Nanosatellite solar cell regulator A solar cell regulator in a nanosatellite includes a pulse width modulated DC-DC boost converter and a peak power tracking controller for converting solar cell power to bus power for charging of system batteries and powering loads while the controller controls the p... | 08/31/2010 |
| 7495425 | Buck converter with demagnetization detection of the inductor A buck converter is equipped with a switch, a diode, an inductance, a capacitor, an input with a first connection and second connection, and an output with a first connection and second connection. The first connection of the input is connected to the first connecti... | 02/24/2009 |
| 7397229 | Switch mode power circuit There is provided a switch mode power supply circuit including at least one inductive component coupled to an associated switching device for cyclically connecting the inductive component to a source of power. The circuit includes a signal output representative of a... | 07/08/2008 |
| 7391198 | Method and cell for controlling the power factor of a power supply line A method for controlling the power factor of a power supply line is described, the method using a power factor control cell connected to the power supply line. Advantageously according to the invention, the power factor control is performed by adjusting the turn-on ... | 06/24/2008 |
| 7378828 | DC-DC converter having magnetic feedback A DC-DC converter suitable for multiple converter circuit topologies is disclosed. The DC-DC converter utilizes magnetic feedback of the output load current to provide broad inductance control of a magnetic element, while inhibiting saturation of the switched windin... | 05/27/2008 |
| 7352162 | PWM boost system and start-up method thereof A PWM (pulse width modulation) boost system includes a boost circuit, a voltage dividing circuit, a comparator, a PWM circuit, a pre-oscillator, and a current limit circuit. A start-up method of the PWM boost system includes (1) providing an error voltage; (2) gener... | 04/01/2008 |
| 7345459 | Emulated inductor current automatic correction without knowledge of actual inductor current ramp for emulated peak control mode PWM Method and circuit for automatic correction of emulated inductor current without knowledge of actual inductor current ramp for an emulated current mode (ECM) PWM switching regulator. In an ECM-PWM switching regulator a compensation ramp component is usually added to... | 03/18/2008 |
| 7323851 | Digital power factor correction controller and AC-to-DC power supply including same A PFC AC-to-DC power supply is disclosed. According to various embodiments, the PFC AC-to-DC power supply comprises a switching converter comprising at least one main power switch and a PFC controller for controlling the at least one main power switch. The PFC contr... | 01/29/2008 |
| 7321224 | DC-DC converter with clamping capacitor and output winding for reduced output voltage ripple A DC-DC converter is structured such that a main switching element has one terminal connected to one terminal of a DC power supply and has the other terminal connected to one terminal of a first winding of a resonance coil, a choke coil has one terminal connected to... | 01/22/2008 |
| 7265524 | Adaptive control for inducer based buck-boost voltage regulators Voltage regulators and methods for regulating voltages are disclosed. A switching circuit with an inductor and a plurality of switches may be used to produce a regulated voltage from an unregulated voltage source. A control circuit may be used to monitor the voltage... | 09/04/2007 |
| 7233132 | Current sensing in multiple coupled inductors by time constant matching to leakage inductance Voltage regulators often have coupled output inductors because coupled output inductors provide improvements in cost and efficiency. Coupled inductors are often used in multi-phase voltage regulators. Feedback control of voltage regulators often requires accurate an... | 06/19/2007 |
| 7221135 | Method for regulating the time constant matching in DC/DC converters A method regulates the time constant matching of a DC/DC converter phase, further to a variation of a load applied to an output of said phase. Such phase being associated with a coil network, with a series RL circuit and a reading network 10, with a series RC... | 05/22/2007 |
| 7207054 | Low noise block supply and control voltage regulator A low power circuit for providing power and control signals to a low noise block converter of a satellite receiver over a single coaxial cable includes a tracking switch-mode power supply. The power and control signals have a DC voltage level selected from a plurali... | 04/17/2007 |
| 7202649 | High frequency switch circuit A high-frequency switch circuit is presented. The invention includes a pair of switches, a pair of inductors, and a pair of diodes. Inductors are electrically connected in series between the switches which are thereafter electrically coupled to a power source. Switc... | 04/10/2007 |
| 7193396 | DC converters having buck or boost configurations An inductor in a series path of a DC converter having a buck or boost configuration is constituted by a transformer with windings in series with switches of the converter. A transformer turns ratio facilitates matching switch voltage and current stresses to characte... | 03/20/2007 |
| 7164258 | Circuits and methods for providing multiple phase switching regulators which employ the input capacitor voltage signal for current sensing Circuits and methods to correct the load sharing in multiphase switching regulators are provided. Using these systems and methods, the input capacitor voltage signal can be sampled and used for current sensing of the regulator's stages. Differences in the amount of ... | 01/16/2007 |
| 7135847 | Serial connected low-loss synchronously switchable voltage chopper The invention relates to a buck converter comprising: a pair P—0 of switches SB, SH in series and connected to an input terminal B of the converter by the switch SB, K other additional pairs P—1, P—2, . . .... | 11/14/2006 |
| 7116011 | CPU surge reduction and protection Methods and systems of providing power to a central processing unit (CPU) provide for enhanced surge protection and increased battery life. In one approach, an integrated circuit as a power output stage with an output node, and a voltage regulator coupled to the pow... | 10/03/2006 |
| 7109691 | Systems for auto-interleaving synchronization in a multiphase switching power converter A plurality of single-phase synchronizing converter automatically synchronize on a peer-to-peer basis. Each synchronizing converter is configured as a DC-to-DC converter. The synchronizing converters operate in parallel as a multi-phase converter. A common bus betwe... | 09/19/2006 |
| 7098630 | Control means and methods for a transistor switch circuit The invention relates to a control means and method for a transistor switch circuit controlling a power supply circuit for providing electric power to a load, comprising: a power supply stage having an LC circuit with an inductor, and a control stage having an estim... | 08/29/2006 |
| 7071668 | Power circuit and method for controlling same A power circuit is provided which has a small current peak value from a power source even when a load current repeats periodically, and a burst flow in a burst period and a non-burst flow in a non-burst period alternates. The power circuit includes a power source se... | 07/04/2006 |
| 7061778 | Method and apparatus for extending the operating range of a flyforward converter A technique for extending the operating range of a flyforward converter to low input voltages. In one aspect, power converter includes a positive input supply rail and a negative input supply rail. A power converter input voltage is to be applied between the positiv... | 06/13/2006 |
| 7023183 | Power supply with capacitive mains isolation A power supply with capacitive mains isolation, comprises a source of an input supply voltage developed between a first terminal and a second terminal. A first supply inductance is coupled to the first terminal, and a second supply inductance is coupled to a load ci... | 04/04/2006 |
| 7002323 | Switching power supply circuit capable of reducing switching loss and control method used therein When a switching element (33) changes from ON state into OFF state, a capacitor (35) is charged. The rising of the voltage of the switching element becomes dull relative to the falling of the current flowing in the switching element. When the switching... | 02/21/2006 |
| 6998825 | DC-DC converter An inductor 6 accumulates an energy therein or releases the accumulated energy according to the state of a main switch element 10 being turned ON/OFF. When the inductor 6 releases an energy, if a sub-switch element 12 is in the ON state, ... | 02/14/2006 |
| 6965219 | Method and apparatus for auto-interleaving synchronization in a multiphase switching power converter A plurality of single-phase synchronizing converter automatically synchronize on a peer-to-peer basis. Each synchronizing converter is configured as a DC-to-DC converter. The synchronizing converters operate in parallel as a multi-phase converter. A common bus betwe... | 11/15/2005 |
| 6940261 | Circuits and methods for providing multiple phase switching regulators which employ the input capacitor voltage signal for current sensing Circuits and methods to correct the load sharing in multiphase switching regulators are provided. Using these systems and methods, the input capacitor voltage signal can be sampled and used for current sensing of the regulator's stages. Differences in the amount of ... | 09/06/2005 |
| 6930472 | Switching regulator circuit A switching regulator circuit for supplying two input potentials to a passive device that is driven by a potential difference between the two input potentials irrespective of potential differences between the two input potentials and a ground potential, includes: a ... | 08/16/2005 |
| 6909268 | Current-mode switching regulator A current mode switching controller contains at least one controllable semiconductor switch, an impedance, a voltage divider, an external control circuit for regulating the voltage, and an internal control circuit coupled to the external control circuit and used to ... | 06/21/2005 |
| 6906536 | Time division multiplexed, piloted current monitoring in a switched mode DC—DC voltage converter and phase current measurement calibration for a multiphase converter An arrangement for measuring current through a phase section of a buck mode DC-DC converter includes an auxiliary integrated circuit containing an auxiliary power MOSFET and a pilot MOSFET coupled in parallel with a current path through a high side MOSFET of a half-... | 06/14/2005 |
| 6873141 | Device for controlling a power output stage A control device for a power output stage is proposed, which includes a power output stage control which generates a triggering signal as a function of at least one control signal, for triggering at least one power output stage, which switches an electric load, pref... | 03/29/2005 |
| 6771518 | DC converters In a DC converter, a transformer has a first winding coupled in series with a first capacitor and a first switch between a first pair of terminals, and a second winding coupled in series with a second capacitor and an inductor between a second pair of terminals. A s... | 08/03/2004 |
| 6696882 | Transient override circuit for a voltage regulator circuit A circuit for providing a regulated voltage to a load. The circuit includes a power converter coupled to the load and including at least one pulse-width modulated switching device, a control circuit for providing a pulse-width modulated control signal to ... | 02/24/2004 |
| 6693805 | Ripple cancellation circuit for ultra-low-noise power supplies A low-ripple power supply includes a storage capacitor coupled across load terminals, and an inductor connected to a source of voltage including a varying or pulsatory component and a direct component, for causing a flow of current to said capacitor throu... | 02/17/2004 |
| 6650096 | Multiple phase switching regulator circuits sensing voltages across respective inductances A switching regulator includes an inductive element to provide a first voltage across the element and at least one switch to energize and de-energize the inductive element to produce an output voltage. A controller of the regulator constructs an indicatio... | 11/18/2003 |
| 6538418 | Driving signal supply circuit A switching power supply circuit display an oscillation frequency will not be lowered with a light load. After the first output transistor 11 turns from conduction to cut-off, when the second output transistor 12 conducts, first, by means of the energy ac... | 03/25/2003 |
| 6534962 | Voltage regulator having an inductive current sensing element A switching regulator includes an inductive element to provide a first voltage across the element and at least one switch to energize and de-energize the inductive element to produce an output voltage. A controller of the regulator constructs an indicatio... | 03/18/2003 |
| 6462524 | Floating buck regulator topology Apparatus and method that provide for a Buck regulator with reduced open-switch voltage requirements. The buck regulator includes a transformer with a primary coil that is charged by an input voltage when the semiconductor switching circuit is in a closed... | 10/08/2002 |
