Did You Know...
...that the Band-Aid Bandage was invented by a Johnson & Johnson employee whose wife had cut herself? Earl Dickson's wife was rather accident prone, so he set out to develop a bandage that she could apply without help. He placed a small piece of gauze in the center of a small piece of surgical tape, and what we know today as the Band Aid bandage was born!
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| Number | Title | Issue Date |
| 7944273 | Active filtering Techniques for adjusting the voltage across an active filter element include a controlled circuit element and a control circuit element adapted to control the voltage across the controlled circuit element to increase transient load response and to reduce power dissi... | 05/17/2011 |
| 7821323 | Bias circuit for a switching power supply A bias circuit for a switching power supply includes a rectifier that is connected to an AC power source and outputs a full wave rectified voltage Vs; a voltage divider, a diode, a first transistor, and a second transistor connected in parallel between Vs and ground... | 10/26/2010 |
| 7616047 | Transistor arrangement for rectifier and inverter A transistor arrangement has first and second terminals and a control terminal which sets a current flow between the first and second terminals, and a signal conditioning device which applies a transistor control voltage to the control terminal in a manner dependent... | 11/10/2009 |
| 7443229 | Active filtering Techniques for adjusting the voltage across an active filter element include a controlled circuit element and a control circuit element adapted to control the voltage across the controlled circuit element to increase transient load response and to reduce power dissi... | 10/28/2008 |
| 7385436 | Fully depleted silicon on insulator semiconductor devices A CMOS circuit in low-voltage implementation, low power-consumption implementation, high-speed implementation, or small-size implementation. In a circuit which uses a FD-SOI MOST where a back gate is controlled by a well, voltage amplitude at the well is made larger... | 06/10/2008 |
| 7365585 | Apparatus and method for charge pump slew rate control An apparatus and method for improving memory cell reliability is disclosed. The slew rate is reduced in an applied voltage signal used to program a memory cell when Fowler-Nordheim (FN) tunneling injection is detected. The applied programming signal is provided by a... | 04/29/2008 |
| 7352233 | Efficient thyristor-type power switches The highest-power switches now available are based on thyristor-type devices: GTOs (Gate turn-off thyristors), MTOs (MOS controlled turn-off thyristors), IGCTs (Integrated gate commutated thyristors), and the new ETOs (Emitter turn-off thyristors). These devices han... | 04/01/2008 |
| 7321257 | Semiconductor device capable of detecting an open bonding wire using weak current An IC chip has a series regulator built therein. A battery voltage is applied to an input pin. An output of a transistor constituting the series regulator occurs at an output pin via an output pad. A feedback signal derived from an output voltage occurs at an end of... | 01/22/2008 |
| 7292017 | Capacitor insulating power supply Switching elements M1, M2, M3 are connected in series between the positive and negative lines carrying DC current supplied through a rectifier circuit 2 from an AC power supply 1 or directly supplied from a DC power source. The swi... | 11/06/2007 |
| 7289775 | Method for transmit power control A transceiver has power control circuitry integrated therein. In particular, the power control circuitry receives a signal indicative of the transmit power level and adjusts the gain on a variable gain amplifier within the transceiver such that the output of the tra... | 10/30/2007 |
| 7274748 | AM to FM correction system for a polar modulator A transmitter for a mobile terminal including a polar modulator that compensates for amplitude to frequency distortion (AM to FM distortion) of a power amplifier in the transmit chain is provided. In general, the modulator includes a polar converter that converts an... | 09/25/2007 |
| 7256638 | Series active filtering power line conditioner The apparatus includes a series active continuous time voltage regulator operating in conjunction with a alternating current power source and one or more loads. The alternating current power source is a voltage source that induces currents at a first end of the appa... | 08/14/2007 |
| 7245513 | Semiconductor integrated circuit device, contactless electronic device, and handheld terminal In a semiconductor integrated circuit device in which a rectifier device constituting a rectifier comprises a MOS transistor whose gate is connected to one antenna terminal and whose source is connected to the other antenna terminal, the parasitic capacitance applie... | 07/17/2007 |
| 7242261 | Voltage control for clock generating circuit An apparatus is provided that includes a clock distribution network, a plurality of distributed oscillators provided about the clock distribution network so as to provide clock signals on the clock distribution network and a power control circuit to control power ap... | 07/10/2007 |
| 7205831 | Noise filter circuit There is provided a noise canceling circuit that includes a first source terminal, a second source terminal, an output terminal, a reference voltage generator for generating a reference voltage, a bias current generator for generating a bias current determining an o... | 04/17/2007 |
| 7202760 | Resistive voltage divider A radio-frequency impedance device includes a resistor device mounted on a surface of a dielectric layer, and adapted to be connected between a transmission line and an output terminal associated with a load impedance. A ground conductor may extend opposite a portio... | 04/10/2007 |
| 7161415 | Current modulation filter A current modulation filter for mitigating fluctuations in current on a power supply line due to time dependent current demands of a load circuit includes a biasing circuit for providing a source voltage reference and a quiescent current reference and a load voltage... | 01/09/2007 |
| 7132880 | High bandwidth, high PSRR, low dropout voltage regulator A voltage regulator may include one or more features for generating high PSRR. For example, source follower devices may be included in the voltage regulator for providing current sources for the output voltage nodes. The source followers may be sensitive to power su... | 11/07/2006 |
| 7078884 | Power supply apparatus and control circuit therefor A selector sets respective phases of pulse driving signals in reverse when a proportion signal or integration signal does not exceed a threshold. Shifting the respective phases of the pulse driving signals from each other lowers the ripple voltage. When the load cur... | 07/18/2006 |
| 7078937 | Logic circuitry powered by partially rectified ac waveform Logic circuitry is powered by a partially rectified alternating current (ac) waveform. The waveform is partially rectified in the sense that it does not provide a clean, primarily dc power signal. Instead, it is possible to power logic circuitry with a waveform that... | 07/18/2006 |
| 7071662 | Synchronized parallel running power converter In prior arts, additional pulse-width modulators and more costs are needed for increasing the current output. The invention provides a synchronized parallel running power converter. The power converter includes multiple power converters controlled by single-phase or... | 07/04/2006 |
| 7034604 | Communications device powered from host apparatus A communications device, such as a transceiver, is used with a fiber optic communication line, wherein the communications device is powered from a host device. A voltage supply circuit, which comprises a full wave bridge rectifier responsive to data and control sign... | 04/25/2006 |
| 7026665 | High voltage GaN-based transistor structure The present invention relates to a high voltage and high power gallium nitride (GaN) transistor structure. In general, the GaN transistor structure includes a sub-buffer layer that serves to prevent injection of electrons into a substrate during high voltage operati... | 04/11/2006 |
| 7002391 | Selectable input attenuation Mobile terminal design is made simpler by providing an attenuation circuit having a selectable amount of attenuation within an integrated circuit. In one embodiment, a plurality of input pins are provided so as to connect to different points of the attenuation circu... | 02/21/2006 |
| 6998919 | Temperature compensated power amplifier power control The present invention provides temperature compensation for a power amplifier by varying a supply voltage applied to the power amplifier. The supply voltage is varied based on operating temperature in light of the temperature characteristics of the power amplifier. ... | 02/14/2006 |
| 6995548 | Asymmetrical multiphase DC-to-DC power converter A multiphase DC-DC converter architecture, in which respectively different channels have different operational performance parameters. These different parameters are selected so as to enable the converter to achieve an extended range of high efficiency. The converte... | 02/07/2006 |
| 6980039 | DC-DC converter with noise spreading to meet spectral mask requirements A DC—DC converter includes a variable frequency oscillator, a control system and a power train. The DC—DC converter is well suited for use in a cell phone. The control system uses the output of the oscillator to control the power train. The oscillator varies its... | 12/27/2005 |
| 6969978 | DC-DC converter with reduced electromagnetic interference A DC-DC converter includes a variable frequency oscillator, a control system and a power train. The DC-DC converter is well suited for use in a cell phone. The control system uses the output of the oscillator to control the power train. The oscillator varies its fre... | 11/29/2005 |
| 6970040 | Multi-mode/multi-band power amplifier The present invention provides a wideband power amplifier for a multi-mode or multi-band wireless communication device. The wideband power amplifier is configured to amplify signals in different frequency bands corresponding to different operating modes. In general,... | 11/29/2005 |
| 6943535 | Multiple-phase DC-DC converter topology A multiple-phase DC—DC converter adds at least one additional phase to an N-phase DC—DC converter to improve the converter's response to changes in load. In one embodiment, an additional phase operates at a switching frequency greater than that of the N phases, ... | 09/13/2005 |
| 6940304 | Adaptive threshold logic circuit An adaptive threshold logic circuit is provided in which the switching threshold levels of the logic circuit are automatically changed to accommodate variations in the level of applied data signals to the switching circuit. A detector stage detects the voltage level... | 09/06/2005 |
| 6940703 | Overvoltage protection circuit An overvoltage protection circuit for interposing between an input voltage and a supply voltage is described. The overvoltage protection circuit includes switch circuitry connected to and passing current between an input voltage node and a supply voltage node, the i... | 09/06/2005 |
| 6914476 | High bandwidth, high PSRR, low dropout voltage regulator A voltage regulator may include one or more features for generating high PSRR. For example, source follower devices may be included in the voltage regulator for providing current sources for the output voltage nodes. The source followers may be sensitive to power su... | 07/05/2005 |
| 6906584 | Switchable gain amplifier having a high-pass filter pole The present invention provides a switchable gain amplifier comprising a high-pass filter pole. The switchable gain amplifier comprises first and second input nodes for receiving first and second components of a differential input signal. A first input terminal of a ... | 06/14/2005 |
| 6903606 | DC offset correction using unused LNA A receiver performs DC offset correction by preliminarily using an unused LNA with a terminating resistance to determine a base level DC offset. Once the DC offset is determined, a DC offset correction may be calculated and applied to an active LNA output. When dete... | 06/07/2005 |
| 6870417 | Circuit for loss-less diode equivalent A loss-less diode equivalent circuit which functions to reduce and eliminate the forward bias voltage or drop associated with conventional diodes. The loss-less diode comprises a reverse connected MOSFET device which is configured with a clamping circuit and coupled... | 03/22/2005 |
| 6781432 | Control circuit of MOSFET for synchronous rectification A control circuit for a MOSFET used in a synchronous rectification circuit applies a gate voltage to the MOSFET during most of a period in which a current flows in a MOSFET. As a result, conduction loss is decreased, making it possible to increase device efficiency ... | 08/24/2004 |
| 6741103 | Device using a detection circuit to determine whether an output current thereof is source-induced or load-induced, and method therefor A device which uses a detection circuit to determine whether an output current thereof is source-induced or load-induced, and the method therefor. The device which performs some type of operation based upon the determination as to whether the output current thereof ... | 05/25/2004 |
| 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 |
| 6605980 | Synchronous rectifier circuit The present invention relates to a synchronous rectifier circuit having a transformer (U) in single-phase center-tap connection. MOSFETs containing a body diode are used as switches. The MOSFETs are connected up in such a way that a current flows only fro... | 08/12/2003 |
