Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 8134353 | Multi-phase power converter and control circuit and method thereof The present invention discloses a multi-phase power converter, and a control circuit and a control method of the multi-phase power converter. The multi-phase power converter comprises multiple power conversion phases. The method comprises: determining whether to ent... | 03/13/2012 |
| 8080983 | Low drop out (LDO) bypass voltage regulator A power element bypass and voltage regulation circuit shutdown is used in a low drop out (LDO) bypass voltage regulator to minimize current drawn by the voltage regulator circuit when the supply input voltage approaches the regulated output voltage of the voltage re... | 12/20/2011 |
| 8080982 | Low drop-out voltage regulator with efficient frequency compensation A low drop-out (LDO) voltage regulator with efficient frequency compensation is disclosed. The LDO voltage regulator includes an error amplifier, a transmission element, a voltage divider and a pole control unit. The error amplifier generates a control signal accord... | 12/20/2011 |
| 8026703 | Voltage regulator and method having reduced wakeup-time and increased power efficiency A voltage regulator and method of using the same are provided that improve wakeup-time and reduce power wastage in switching a device from standby or sleep-mode to active mode. Generally, the voltage regulator includes: (i) a standby regulator having a high-impedanc... | 09/27/2011 |
| 7960954 | Voltage adjusting apparatus The invention discloses a voltage adjusting apparatus including a power adaptor, a first resistor, a current detecting module, a second resistor, and a voltage feedback controlling module. The power adaptor outputs a first current first. The first resistor is used t... | 06/14/2011 |
| 7863875 | Non-linear control techniques for improving transient response to load current step change A voltage regulator may be configured to detect variation in load current and control transient response when the load current has a high slew rate or varies at high repetition rates. A linear control circuit may be employed to control charging of an output capacito... | 01/04/2011 |
| 7855536 | Semiconductor integrated circuit device minimizing the total power of both the power supply and the load Source voltage and substrate voltage are supplied to a semiconductor integrated circuit 1E from the regulator circuits 11C and 21C of a power supply circuit 1C via a power detection compensating circuit 1D. The power efficiency val... | 12/21/2010 |
| 7834602 | Feedback power control system for an electrical component A feedback power control system includes: a multiplying unit receiving a work voltage corresponding to a voltage drop of an electrical component, and a feedback voltage corresponding to a work current flowing through the electrical component, and outputting a measur... | 11/16/2010 |
| 7821242 | Constant voltage circuit and method of controlling ouput voltage of constant voltage circuit A constant voltage circuit for converting an input voltage input from an input terminal, converting the input voltage to a predetermined constant voltage, and outputting the converted voltage from an output terminal is disclosed that includes an output transistor fo... | 10/26/2010 |
| 7791322 | Economical high voltage DC to low voltage DC converter An exemplary DC-DC converting circuit (2) includes an input terminal (20), a regulating circuit (21), a bleeder circuit (23), an output terminal (25), a voltage-controlling terminal (26), and a load (24). The input te... | 09/07/2010 |
| 7777463 | System, method and apparatus to automatically detect a type of a variable output DC power source A method includes coupling a variable output DC power source to power control circuitry, and detecting a type of the variable output DC power source in response to the coupling operation. In one embodiment, the detecting operation may include sending an interrogatio... | 08/17/2010 |
| 7777464 | Mixed type frequency compensating circuit and control circuit A mixed type frequency compensating circuit is disclosed. The mixed type frequency compensating circuit includes an integral component sub-circuit of a voltage-amplifier-type frequency compensating circuit and a proportional component sub-circuit of a transconductan... | 08/17/2010 |
| 7772814 | Step-down circuit A step-down circuit generates a second power supply lower than a first power supply. The step-down circuit includes an output terminal connected to a load circuit, an output transistor connected between the first power supply and the output terminal, and having a ga... | 08/10/2010 |
| 7683592 | Low dropout voltage regulator with switching output current boost circuit A low dropout voltage regulator with switching output current boost circuit. In one aspect of the invention, a voltage regulator circuit includes a low dropout voltage regulator providing an output voltage at an output based on an input voltage at an input, and a bo... | 03/23/2010 |
| 7671571 | Semiconductor device having an integrated, self-regulated PWM current and power limiter and method A method includes receiving an activation signal at a semiconductor device and generating an output power signal at the semiconductor device in response to receiving the activation signal. The output power signal has a duty cycle. The method also includes providing ... | 03/02/2010 |
| 7626368 | Method and apparatus for providing a regulated voltage at a voltage output An apparatus for supplying a glitch-free, regulated voltage at a voltage output includes a main transistor, which is connected between an intermediate potential and the voltage output, a bypass transistor, which is connected between a supply potential and the voltag... | 12/01/2009 |
| 7576524 | Constant voltage generating apparatus with simple overcurrent/short-circuit protection circuit In a constant voltage generating apparatus where an output circuit is controlled in accordance with a control voltage, a voltage detection signal generating circuit generates a voltage detection signal in accordance with a difference between an output voltage signal... | 08/18/2009 |
| 7511464 | Voltage regulator Provided is a voltage regulator in which a rush current of an output circuit can be limited and a rise time of an output voltage is short. The voltage regulator includes a first output current limiting circuit and a second output current limiting circuit which are u... | 03/31/2009 |
| 7508179 | Dual input prioritized LDO regulator An LDO regulator includes two linear regulator circuits and an internal priority logic scheme that favors generating a regulated output voltage using a regulated supply voltage over an unregulated supply voltage. The unregulated supply voltage is applied to a first ... | 03/24/2009 |
| 7429852 | Constant voltage circuit capable of quickly responding to a sudden change of load current A constant voltage circuit which is capable of quickly responding to a sudden change of an output voltage includes an output transistor, and first and second error amplifiers. The output transistor outputs a power with an output voltage and an output current to a lo... | 09/30/2008 |
| 7405545 | Voltage-regulator and power supply having current sharing circuit The present invention proposes a voltage-regulator and a power supply having a current-sharing circuit. The voltage-regulator capable of current sharing uses an enabling terminal as a current-sharing control interface. A pass transistor supplies an output voltage an... | 07/29/2008 |
| 7402985 | Dual path linear voltage regulator A voltage regulator comprising two feedback loops for regulating a load voltage, where the first feedback loop comprises a pass transistor to source current to the load, and the second feedback loop comprises a shunt transistor to shunt current from the pass transis... | 07/22/2008 |
| 7400119 | Modular high voltage power supply for chemical analysis A high voltage power supply for use in a system such as a microfluidics system, uses a DC-DC converter in parallel with a voltage-controlled resistor. A feedback circuit provides a control signal for the DC-DC converter and voltage-controlled resistor so as to regul... | 07/15/2008 |
| 7391187 | Regulator with load tracking bias An electrical circuit that provides accurate, regulated output voltage over a wide range of input voltages, while exhibiting each of three desired characteristics: accuracy across different supply/process/temperature; stability and linearity yielding phase/gain marg... | 06/24/2008 |
| 7385376 | Voltage regulator with high voltage protection A method for regulating a voltage in an integrated circuit device includes providing a first regulated output based upon a first voltage input range and subsequently receiving the first regulated output and providing a second regulated output based upon a second vol... | 06/10/2008 |
| 7365451 | Power converter A power converter that can continue to operate after suffering a partial failure. The power converter includes multiple array transformers; normally-on switches connected respectively in series with the ends of each of the primary windings of the array transformers;... | 04/29/2008 |
| 7362078 | Power supply circuit The present invention relates to a power supply circuit that can intermittently operate when its load is small and therefore can reduce current consumption at a sleep mode. The power supply circuit for receiving an input voltage at an input terminal, converting the ... | 04/22/2008 |
| 7362558 | Protective device in a controller In the case of a protective device in a controller which contains at least one processor and is connected to a sensor via a sensor ground line and at least one further line, the invention provides that a ground in the controller is connected to the sensor ground lin... | 04/22/2008 |
| 7362157 | Circuit arrangement with a transistor having a reduced reverse current A circuit arrangement is disclosed herein having an input terminal configured to receive an input voltage, and an output terminal to provide an output voltage for a load. A first transistor with a load path and a control terminal is connected between the input termi... | 04/22/2008 |
| 7355372 | Power control system capable of balancing output currents A power control system includes a voltage control circuit and a plurality of balance circuits. The voltage control circuit controls a voltage level at an output of the power control system according to a reference voltage. Each of the plurality of balancing circuits... | 04/08/2008 |
| 7353481 | Computer implemented method for designing a semiconductor integrated circuit and a semiconductor integrated circuit A computer implemented method for designing a semiconductor integrated circuit includes placing dummy pattern on a second interconnection layer positioned just above the first power line based on a placement result of the first power line, the dummy pattern having a... | 04/01/2008 |
| 7327130 | Current sense method A current-sense circuit for measuring a load current in a switching power regulator may operate independently of process variation and temperature, and measure bi-directional load currents without requiring high-speed, high-voltage amplifiers for operation. A positi... | 02/05/2008 |
| 7323853 | Low drop-out voltage regulator with common-mode feedback The present invention is a LDO voltage regulator circuit with common-mode feedback. The LDO voltage regulator includes an error amplifier with a common-mode feedback unit, a pass device and a compensation circuit. A signal from the pass device acts as an input signa... | 01/29/2008 |
| 7317306 | Nonlinear adaptive voltage positioning for DC-DC converters The present invention provides a nonlinear adaptive voltage positioning DC-DC converter method and apparatus that enable improved voltage transient response under changing current conditions for a load with known current draw characteristics. The invention in some e... | 01/08/2008 |
| 7301313 | Multiple voltage regulators for use with a single load Multiple voltage regulators for use with a single load. The present invention allows power to be supplied to an electrical load using multiple voltage regulators based on the operating environment of the load. In one embodiment, a primary voltage regulator that is b... | 11/27/2007 |
| 7279878 | Output regulating device for regulating output of electric power source depending on input therefrom If an input voltage to an output control device is above a lower limit value, the output control device operates in a constant voltage control mode for maintaining an output voltage at a substantially constant voltage. If the input voltage of the output control devi... | 10/09/2007 |
| 7279872 | Circuit and method for processing a supply voltage with voltage peaks A circuit for processing a supply voltage with a voltage peak to obtain an output signal with reduced or eliminated voltage peak, comprises a first capacitance and a second capacitance, wherein a controllable resistor is formed between the first and second capacitan... | 10/09/2007 |
| 7277305 | Power converter A heavy duty cycle power converter (2) has current mode control in which the closed loop control is carried out by a controller (5) using a desired signal (11) which is a function of the difference between the desired duty cycle (7) and t... | 10/02/2007 |
| 7274176 | Regulator circuit having a low quiescent current and leakage current protection A voltage regulator includes first and second transistors arranged in parallel and configured to regulate current flow to an output node, and a sensing circuit configured to sense a voltage level at the output node and provide a signal proportional thereto. the regu... | 09/25/2007 |
| 7259473 | Method of controlling parallel diverse conversion paths in DC-to-DC power converter A DC-DC converter has a plurality of diverse type DC-DC converter channels whose outputs are combined to provide a composite DC power output to a load. One of the channels is a high efficiency power path that supplies the average current demand of the load. A second... | 08/21/2007 |
