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 |
| 7969127 | Start-up circuit for a shunt regulator A method and circuit for controlling the start-up of a shunt regulator that uses an error amplifier for normal operation in a linear range of a target value output voltage set by a reference voltage upon circuit start-up clamps the output voltage to a first level va... | 06/28/2011 |
| 7429851 | Constant voltage power supply circuit A disclosed constant voltage power supply circuit (1) has an input terminal (Vdd), an output terminal (Vout), a constant voltage power supply unit (2) that generates a constant voltage (Vo1) with a ripple voltage (Vri), and a ripple removing cir... | 09/30/2008 |
| 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 |
| 7372489 | Signal processing circuit and solid-state image pickup device A VI conversion circuit 40n inputs a voltage output from a hold circuit 30n, converts this input voltage to a current based on the resistance value of a resistor R40, and outputs this current from a drain terminal of a ... | 05/13/2008 |
| 7339357 | Power supply regulation using kelvin tap for voltage sense feedback from point within integrated circuit load A remote sensing power supply regulator uses high impedance sensing inputs coupled internally to at least one circuit element within an integrated circuit, so as to regulate the voltages produced by the power supply to a level that maintains nominal voltage levels a... | 03/04/2008 |
| 7327203 | PWM signal generation circuit and PWM control circuit A PWM signal generation circuit and a PWM control circuit are provided in which the duty ratio is easily changed and which can also avoid adverse impact from ambient temperature changes and the like. At the beginning of charging a capacitor with a current flow, a vo... | 02/05/2008 |
| 7312598 | Capacitor free low drop out regulator A low drop out (LDO) regulator that includes a novel error amplifier, which is arranged with a first stage that employs both NMOS and PMOS devices that are similarly doped in differential pairs and a second stage that operates with NMOS and PMOS devices in a push-pu... | 12/25/2007 |
| 7292019 | Method for accurately setting parameters inside integrated circuits using inaccurate external components The control precision of one or more parameters of an integrated circuit (IC), for example the output voltage of a voltage regulator comprised in the IC, may be improved even when using inaccurate components external to the IC. Control of the output voltage, or any ... | 11/06/2007 |
| 7285940 | Voltage regulator with shunt feedback A voltage regulator configured to receive a supply voltage from a voltage supply and provide a regulated voltage to digital circuitry is provided. The voltage regulator comprises first circuitry configured to inhibit high frequency energy generated by the digital ci... | 10/23/2007 |
| 7276901 | Method for shunt detection in sensors For monitoring a sensor using differential voltage evaluation for detecting a short circuit to ground and/or to supply voltage UB, a first resistor and a second resistor R1, R2 are assigned to the sensor, a sum voltage is determined ... | 10/02/2007 |
| 7274112 | Method and apparatus for providing uninterruptible power Methods and apparatus for providing uninterruptible power are provided by aspects of the invention. One aspect is more particularly directed to an uninterruptible power supply for providing power to a load. The uninterruptible power supply includes an input to recei... | 09/25/2007 |
| 7265608 | Current mode trimming apparatus A current mode trimming apparatus for trimming a desired current is provided. The trimming apparatus includes a first transistor, a first resistor, an operational amplifier, a first controlled current source, and a second controlled current source. The first and sec... | 09/04/2007 |
| 7248025 | Voltage regulator with improved power supply rejection ratio characteristics and narrow response band In a voltage regulator, a reference voltage generating circuit generates a reference voltage. A drive transistor is connected between a first power supply terminal and an output terminal and has a control terminal. A voltage divider generates a feedback voltage whic... | 07/24/2007 |
| 7239251 | Multi-bit digital input using a single pin Electronic devices, and methods, for transmitting, transferring and/or conveying a multi-bit digital signal as a voltage signal via a single pin. Devices and methods according to the invention substantially reduce the pin count of a device because inputting of a mul... | 07/03/2007 |
| 7199402 | Semiconductor devices The present invention provides a semiconductor device embracing (a) a first semiconductor region defined by a first end surface, a second end surface opposing to the first end surface and a side boundary surface connecting the first and second end surfaces; (b) a se... | 04/03/2007 |
| 7139920 | Method and apparatus for supplying power in electronic equipment A method and apparatus are disclosed for supplying power in electronic equipment. Thus the apparatus comprises at least one electronic component and a power supply unit that provides power to the electronic component. The power supply unit incorporates a detector th... | 11/21/2006 |
| 7129686 | Apparatus and method for a high PSRR LDO regulator A tail current source is provided. The tail current source may be used in amplifiers, in an error amplifier of an LDO, or the like, to achieve high PSRR. The tail current source includes a first current mirror, a capacitor, a resistive device, and a current mirror c... | 10/31/2006 |
| 7120074 | Semiconductor memory and method for operating a semiconductor memory A semiconductor memory includes storage cells (2) that have storage capacitors and transistors with an electrode, which is electrically biasable with two different electrical potentials (V1, V2) in order to open and close the transistor. The ele... | 10/10/2006 |
| 7095282 | Temperature compensating circuit The invention relates to a temperature compensating circuit for an amplifier. The circuit comprises a voltage regulator, a component arrangement and a resistor coupling of at least two resistor units. At least part of the output voltage of the temperature compensati... | 08/22/2006 |
| 7064615 | Method and apparatus for doherty amplifier biasing Apparatus and methods are described for biasing amplifiers with multiple outputs. A semiconductor die may include a reference Field Effect Transistor (FET) integrated on the semiconductor die and coupled to an amplifier integrated on the semiconductor die. A voltage... | 06/20/2006 |
| 7052179 | Temperature detector An integrated temperature sensor having a first PNP-type bipolar transistor diode-connected between a first terminal and a second terminal of the sensor intended to be connected to a reference supply rail; a resistive element and a second diode-connected PNP-type bi... | 05/30/2006 |
| 7034618 | Temperature compensating circuit The invention relates to a temperature compensating circuit for an amplifier. The circuit comprises a voltage regulator, a component arrangement and a resistor coupling of at least two resistor units. At least part of the output voltage of the temperature compensati... | 04/25/2006 |
| 7013178 | Implantable medical device communication system An implantable medical device communication system communicates information between an implantable medical device and at least one slave device by way of a two-wire bus. Slave devices may include remote sensors and other implantable medical devices. The implantable ... | 03/14/2006 |
| 6967470 | Voltage regulator combining a series type regulator with a shunt type regulator having a constant current source A voltage regulator includes a constant current circuit which is connected between an input node with which a power supply voltage is supplied and an output node to which a load is connected and which supplies constant current to the output node. The voltage regulat... | 11/22/2005 |
| 6954058 | Constant current supply device In a current mirror circuit, a compensation resistor having a positive temperature coefficient is connected between the source of a MOS transistor and a power supply line. When the temperature rises, a current output by the constant current circuit and a current flo... | 10/11/2005 |
| 6828763 | Voltage regulator A voltage regulator comprises a differential amplifier for comparing an output of a reference voltage circuit with an output of a voltage dividing circuit and outputting a first signal and a phase compensating circuit having a resistor and a capacitor connected in s... | 12/07/2004 |
| 6713991 | Bipolar shunt regulator Embodiments of the present invention are directed to a high voltage shunt regulator. The shunt regulator may receive input power of positive or negative polarity and may have two conduction paths. A conduction path may be engaged when the input power is of the prope... | 03/30/2004 |
| 6713974 | Lamp transformer for use with an electronic dimmer and method for use thereof for reducing acoustic noise A controller for reducing acoustic noise produced during use of a leading edge dimmer, includes a leading edge controller responsive to an input voltage fed thereto for producing a control signal upon detection of a leading edge, and a linear switch coupled to the l... | 03/30/2004 |
| 6707280 | Bidirectional voltage regulator sourcing and sinking current for line termination A voltage regulator for providing a bidirectional current and a regulated voltage to a load. The voltage regulator regulates the output voltage at one half the level of the input voltage using a voltage doubler circuit in reverse. The regulator provides current to t... | 03/16/2004 |
| 6696822 | Voltage regulator with a constant current circuit and additional current sourcing/sinking A voltage regulator includes a constant current circuit which is connected between an input node with which a power supply voltage is supplied and an output node to which a load is connected and which supplies constant current to the output node. The volt... | 02/24/2004 |
| 6504347 | Apparatus for sub-regulating and sensing an input voltage with minimum connections An electronic circuit produces a measurement signal and a regulated power supply from a single common connection to a raw power supply signal. The electronic circuit can be used as a module in a power control circuit, such as a circuit for charging a batt... | 01/07/2003 |
| 6078168 | Parallel voltage regulator The present invention relates to a voltage regulator for connection in parallel to a load, including a circuitry for generating a temperature-stable reference voltage; a controllable circuit for branching a portion of a current meant for the load; a circu... | 06/20/2000 |
| 5880827 | Measurement System with large dynamic range A measurement circuit having high dynamic range includes high-gain and low-gain amplifiers connected in parallel. A shunt feedback circuit is activated to prevent the high-gain amplifier from saturating when the magnitude of an input signal exceeds its dy... | 03/09/1999 |
| 5559422 | Wall transformer A wall mounted power supply for a remote instrument handle has a novel self compensating voltage regulating circuit that remains in precise calibration despite variable voltage drops in the load, cabling, and control switches. Power output is enabled by a... | 09/24/1996 |
| 5550411 | Downhole instrument power supply system using shunt voltage regulation A downhole power supply system having a variable voltage surface power supply and a downhole shunt voltage regulator between which is disposed in series an energy transducing device. The shunt voltage regulator comprises a current control device which con... | 08/27/1996 |
| 5394076 | Pulse width modulated power supply operative over an extended input power range without output power dropout A pulse width modulated (PWM) power supply combines the advantages of pulse width modulator circuitry with linear circuitry to provide power supply operation over an extended input range with no dropout of power supply output and no adverse effect on a lo... | 02/28/1995 |
| 5262712 | Power supply selectively providing series and parallel regulation The invention relates to a method and a circuit array for regulating the supply voltage of a load as may be found, for example, in the form of an integrated circuit in a chip card. An integrated circuit of this type contains a non-volatile memory and the ... | 11/16/1993 |
| 5260644 | Self-adjusting shunt regulator and method A shunt regulator for isolating a power supply and load is described which automatically adjusts the quiescent current though the shunt, and therefore its available dynamic range, in proportion to the load current fluctuations. A signal proportional to th... | 11/09/1993 |
| 4942312 | Integrated-circuit having two NMOS depletion mode transistors for producing stable DC voltage An integrated-circuit including two NMOS depletion mode transistors having parameters selected so that when the transistors are connected in accordance with the invention (see FIG. 1), the circuit in response to a variable input DC voltage produces a stab... | 07/17/1990 |
| 4914440 | Adjustable current source and digital/analog converter with autocalibration using such a source An adjustable current source comprising a bipolar transistor (BT), the base of which receives a signal adapted to approximately set the current which flows therethrough, and a MOS transistor (MT), in series with the bipolar transistor, the gate (G) of whi... | 04/03/1990 |
