Bizarre Patents
A method of swing on a swing is disclosed, in which a user positioned on a standard swing suspended by two chains from a substantially horizontal tree branch induces side to side motion by pulling alternately on one chain and then the other.
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 |
| 8174251 | Series regulator with over current protection circuit A series regulator with an over current protection circuit regulates output current by controlling an output transistor. A current sense transistor output depends on the conductivity of the output transistor. A current limiting transistor controls the conductivity o... | 05/08/2012 |
| 8169203 | Low dropout regulator A low-drop out (LDO) regulator circuit is provided having a gate of a pass transistor coupled to an output of an operational transconductance amplifier, the LDO regulator exhibiting a non-dominant pole at an output of the LDO. A dynamic zero-compensation circuit is ... | 05/01/2012 |
| 8169202 | Low dropout regulators Low dropout regulators capable of preventing damage caused by a short circuit or a heavy load are provided, in which a pass transistor receives an unregulated power supply voltage to generate a regulated output voltage according to a control signal. Additionally, a ... | 05/01/2012 |
| 8159201 | Linear regulator and voltage regulation method The present invention discloses a linear regulator and a voltage regulation method. The method comprises: providing a power transistor for converting a supply voltage to an output voltage to a load according to the conduction condition of the power transistor; contr... | 04/17/2012 |
| 8148960 | Voltage regulator circuit It is desired for semiconductor devices to reduce an inrush current and an overshoot. According to the voltage regulator circuit of the present invention, when a power supply is turned on, a switch SW1 is turned on in response to a control signal CTR1,... | 04/03/2012 |
| 8143868 | Integrated LDO with variable resistive load To provide adequate compensation for a wide range of output loads, a low dropout (LDO) regulator has an amplifier, a pass transistor, a voltage divider, a compensation network, and a control circuit. The amplifier outputs a comparison result according to a reference... | 03/27/2012 |
| 8143869 | Voltage reference circuit with fast enable and disable capabilities A circuit for providing an output voltage substantially equal to a reference voltage includes: a low drop-out (LDO) regulator coupled to the reference voltage for producing the output voltage at an output terminal; a reference current source having a first end and a... | 03/27/2012 |
| 8129965 | Quick-start low dropout regulator A low dropout regulator includes an error amplifier, an N-type depletion MOSFET, a first switch, a second switch, a low-pass filter resistor, and a low-pass filter capacitor. By switching on both the first switch and the second switch, a voltage level of an output n... | 03/06/2012 |
| 8072197 | Power-managed socket The present invention relates to a power-managed socket adapted for connecting to an electrical device and thus providing the electrical device with power. The power-managed socket comprises: a detection circuit capable of detecting and outputting a characteristic v... | 12/06/2011 |
| 8040118 | Low-dropout voltage regulator with level limiter limiting level of output voltage when level of load current changes and method of operating the same A low-dropout (LDO) voltage regulator that includes an error amplifier which compares a reference voltage with a feedback voltage of an output voltage and outputs an error signal based on the result of the comparison, the error amplifier being biased by an input vol... | 10/18/2011 |
| 8035362 | Amplifier system with DC-component control A power supply system comprises a parallel arrangement of a linear amplifier (LA) and a DC-DC converter (CO). An output of the linear amplifier (LA) is directly coupled to a load (LO) for supplying a first current (II) to the load (LO). The DC-DC converter (CO) has ... | 10/11/2011 |
| 8013582 | Voltage control circuit A voltage control circuit accepts an input voltage and produces a regulated output voltage. Embodiments provide improved responsiveness to variations in input voltage, load current, and ambient temperature. Exemplary embodiments include an NPN transistor connected b... | 09/06/2011 |
| 7990119 | Multimode voltage regulator circuit A multimode voltage regulator circuit includes a linear regulator sub-circuit configured to supply current to a load in a low-current mode, responsive to a first control signal from a first control path, as well as a switching regulator sub-circuit configured to sup... | 08/02/2011 |
| 7973521 | Voltage regulators Voltage regulators are provided. In one embodiment of the voltage regulators, a differential amplifier receives a reference voltage and a feedback voltage, to generate a control signal according to a voltage difference between the feedback voltage and the reference ... | 07/05/2011 |
| 7969131 | Converter circuit with forward and backward control The present invention relates to a converter circuit and a conversion method for converting an input signal of a first value to an output signal of a second value based on a switched operating mode, wherein an output feedback loop (40) and an additional input... | 06/28/2011 |
| 7960953 | Regulator circuit and car provided with the same A regulator circuit stabilizes the input voltage applied to an input terminal before outputting the output voltage via an output terminal. An output transistor is provided between the input terminal and the output terminal. An error amplifier adjusts the voltage app... | 06/14/2011 |
| 7932706 | Single input dual output voltage power supply and method therefor In one embodiment, a power supply controller is configured to form both positive and negative supply voltages from a single input voltage so the maximum differential voltage across a load that uses the positive and negative supply voltages is no greater than the max... | 04/26/2011 |
| 7928706 | Low dropout voltage regulator using multi-gate transistors A voltage regulator includes a first multi-gate transistor, a differential stage, a second stage having a second multi-gate transistor, and a pass transistor to apply an output voltage and output current to a device load. Based on a feedback voltage associated with ... | 04/19/2011 |
| 7928707 | Method and apparatus for power management of a low dropout regulator A method of switching a low dropout regulator includes determining an actual active time of a power request from an electronic device; enabling the low dropout regulator in response to said power request at a time corresponding to a start of the actual active time o... | 04/19/2011 |
| 7919957 | Digital linear voltage regulator A digital linear voltage regulator includes a comparator, a finite state machine, and a current digital-to-analog converter (DAC). The comparator is preferably coupled to receive a reference voltage and an operating voltage supplied to a dynamic load. The comparator... | 04/05/2011 |
| 7911191 | Drop-out voltage monitoring method and apparatus A voltage regulator has a device for regulating an output voltage, having an input to receive an input voltage and an output to deliver an output voltage of a constant level, and a device for correcting a drop-out voltage violation, coupled to the device for regulat... | 03/22/2011 |
| 7902802 | Systems and methods for on-chip power management A power measurement system is disclosed for use on an integrated circuit for measuring the power used by the integrated circuit. The power measurement system includes a low-dropout voltage regulator and a signal input unit. The low-dropout voltage regulator includes... | 03/08/2011 |
| 7902801 | Low dropout regulator with stability compensation circuit The present invention provides a low dropout (LDO) regulator with a stability compensation circuit. A “zero frequency” tracking as well as “non-dominant parasitic poles' frequency reshaping” are performed to achieve a good phase margin for the LDO by means o... | 03/08/2011 |
| 7898230 | Low drop out voltage regulator circuit assembly An integrated circuit assembly includes a voltage level generator, a level shifter, a bandgap reference generator and a voltage regulator. The voltage level generator generates output voltage level signals in response to a supply voltage. The level shifter receives ... | 03/01/2011 |
| 7893670 | Frequency compensation scheme for stabilizing the LDO using external NPN in HV domain A voltage regulator may comprise a regulator output configured to provide a regulated voltage, which may be controlled by an error amplifier based on the regulated voltage and a reference voltage. The error amplifier may control a source-follower stage to mirror a m... | 02/22/2011 |
| 7872459 | Semiconductor integrated circuit device and regulator using it A semiconductor integrated circuit device (IC1) comprises a semiconductor chip (CHIP1), a first frame lead (FR1), and a second frame lead (FR2). The semiconductor chip (CHIP1) includes common-base transistors (P1, P2)... | 01/18/2011 |
| 7863874 | Linear voltage regulator with a transistor in series with the feedback voltage divider A linear voltage regulator is provided having a first transistor connected between a terminal for an input voltage and a terminal for an output voltage, a reference voltage source for producing a reference voltage, a first resistor, a second resistor, a second trans... | 01/04/2011 |
| 7859234 | Switch circuit to control on/off of a high voltage source A switch circuit to control a high voltage source is presented. It includes a JFET transistor, a resistive device, a first transistor and a second transistor. The JFET transistor is coupled to the high voltage source. The first transistor is connected in serial with... | 12/28/2010 |
| 7746047 | Low dropout voltage regulator with improved voltage controlled current source Techniques pertaining to designs of a compensation voltage controlled current source (VCCS) used in low dropout voltage regulators are disclosed. According to one aspect of the present invention, a compensation voltage controlled current source (VCCS) is so designed... | 06/29/2010 |
| 7741823 | Linear voltage regulator with improved large transient response Various voltage regulators and/or voltage regulation systems are disclosed. For example, a voltage regulation system that includes a source follower output is disclosed. The source follower output includes a transistor where the source of the transistor provides a b... | 06/22/2010 |
| 7719242 | Voltage regulator A voltage regulator is disclosed that includes an output transistor outputting a current according to an input control signal to an output terminal; a control circuit part controlling the operation of the output transistor; a switching circuit part connecting the su... | 05/18/2010 |
| 7719241 | AC-coupled equivalent series resistance AC-coupled equivalent series resistance (ESR) is introduced into a control circuit to provide additional stability in the feedback control loop. A sub-circuit emulates the effect of a higher value ESR in the output capacitor. The additional ESR in the feedback contr... | 05/18/2010 |
| 7714552 | LDO with large dynamic range of load current and low power consumption An electronic device has an LDO regulator for varying loads. The LDO regulator includes a primary supply node coupled to a primary voltage supply. An output node provides a secondary supply voltage and a load current. A bias current source generates a bias current. ... | 05/11/2010 |
| 7714551 | High PSRR linear voltage regulator and control method thereof A linear voltage regulator comprises a transistor for converting a supply voltage to an output voltage. By directly monitoring the supply voltage and thereby rapidly responding when the supply voltage suffers a ripple, the linear voltage regulator enhances the stabi... | 05/11/2010 |
| 7710089 | Automatic configuration for linear mode of switching power supply A method and apparatus for a Regulator that automatically configures to work in either SMPS mode or linear mode are disclosed. In one embodiment, the method includes inputting a constant current source to a CBoot_pin for a first predetermined amount of time upon ena... | 05/04/2010 |
| 7705572 | Power supply device and projection apparatus using the same A projection apparatus comprises a projection control unit, power supply device and fan. The projection control unit generates an image beam. The power supply device comprises a filter and voltage driving unit. The voltage driving unit is coupled to the filter and c... | 04/27/2010 |
| 7705573 | Constant voltage circuit A voltage change detecting circuit part amplifies an output signal of a differential amplifying circuit so that a slew rate thereof may be larger than that of a control signal output from a first error amplifying circuit to an output transistor, responding to change... | 04/27/2010 |
| 7701183 | Power circuit and charge pumping circuit A power circuit and a charge pumping circuit add one control switch of small size to control a power transistor, and save one switch of large area and one capacitor of large area as compared with a conventional power circuit and a conventional charge pumping circuit... | 04/20/2010 |
| 7679345 | Digital linear voltage regulator A digital linear voltage regulator includes a comparator, a finite state machine, and a current digital-to-analog converter (DAC). The comparator is preferably coupled to receive a reference voltage and an operating voltage supplied to a dynamic load. The comparator... | 03/16/2010 |
| 7663353 | Circuit arrangement for voltage regulation A circuit arrangement for voltage regulation comprises an output, a controllable output transistor connected to the output, an error detection circuit, and a monitoring control circuit. A voltage-regulated output potential can be tapped off the output, the controlla... | 02/16/2010 |
