Bizarre Patents
A haircutting appliance comprises an enclosed housing having a hollow handle connecting the housing to a vacuum source to carry away cut hairs from a subject's head.
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 |
| 8111105 | Variable gain BiCMOS amplifier An amplifier circuit comprising: a MOSFET amplifier circuit; a BJT amplifier circuit; a MOSFET switch circuit arranged for switching between the MOSFET amplifier circuit and the BJT amplifier circuit to implement different gain modes of the amplifier circuit. ... | 02/07/2012 |
| 7986189 | Amplifier with feedback A circuit includes a first resistive element coupled to a diode, a second resistive element, a first transistor having a first current electrode coupled the second resistive element, a second transistor having a first current electrode coupled to the first resistive... | 07/26/2011 |
| 7928804 | Power amplifier A power amplifier includes: a semiconductor substrate; a preceding-stage amplifying device on the semiconductor substrate, amplifying an input signal; a following-stage amplifying device on the semiconductor substrate, amplifying an output signal of the preceding-st... | 04/19/2011 |
| 7911276 | Transconductor circuit A low noise, highly linear transconductor circuit, which may be applied, e.g., in communication systems, includes a first input node for receiving a first input signal of the transconductor circuit and a second input node for receiving a second input signal of the t... | 03/22/2011 |
| 7830210 | Amplifier device Provided is an amplifier device including a J-FET, a bipolar transistor, a first resistor and a second resistor. The amplifier device has a configuration in which a gate of the J-FET is connected to one end of an ECM and one end of the first resistor, a drain of the... | 11/09/2010 |
| 7626460 | Low noise, low power and high bandwidth capacitive feedback trans-impedance amplifier with differential FET input and bipolar emitter follower feedback A differential amplifier topology includes circuitry to create a higher bandwidth output using less current than an existing Capacitive Trans-Impedance Amplifier (CTIA) using an all Field Effect Transistor (FET) circuit design. A bipolar npn emitter follower in the ... | 12/01/2009 |
| 7415245 | Pulse shaping signals for ultrawideband communication An ultrawideband radio frequency pulse is generated by shaping a carrier signal having a selected frequency with a window function. The shaped carrier is gated to produce the ultrawideband pulse. In further embodiments, the window function comprises a sinusoidal fun... | 08/19/2008 |
| 7411451 | Class AB folded cascode stage and method for low noise, low power, low-offset operational amplifier An amplifier circuit includes an pair of input transistors, the drains of which are connected to emitters of first and second cascode transistors. First and second controlled current sources are connected to the emitters of the first and second cascode transistors, ... | 08/12/2008 |
| 7358968 | Sustain driver, sustain control system, and plasma display The collector, emitter, and base of a bipolar transistor circuit are connected to a high side power supply terminal, the drain of a level shift transistor, and a floating power supply terminal, respectively. When a high side output transistor is on, the floating pow... | 04/15/2008 |
| 7348855 | Bias circuitry for cascode transistor circuit An integrated circuit includes a composite transistor including at least a first transistor of a first technology type having a first group of intrinsic properties and a second transistor of a second technology type having a second group of the intrinsic properties,... | 03/25/2008 |
| 7323937 | Variable-gain amplifier A variable-gain amplifier has distortion characteristics (IIP3) improved when the gain is attenuated without impairing characteristics with respect to a gain PG and a noise figure NF when the gain is maximum. The variable-gain amplifier has a plurality of parallel-c... | 01/29/2008 |
| 7304540 | Source follower and current feedback circuit thereof A current feedback circuit is used in the source follower. The source follower includes a first MOS transistor and a current mirror. The first MOS transistor has a gate receiving an inputting signal and a source outputting an output signal. A drain current flows thr... | 12/04/2007 |
| 7288993 | Small signal amplifier with large signal output boost stage A small signal amplifier with a large signal output boost stage are connected between first and second supply rails. The small signal amplifier receives first and second input signals and provides an output signal at an output node which drives a load. Under small s... | 10/30/2007 |
| 7269268 | SMD type biased condenser microphone A surface mounted device (SMD) type biased condenser microphone includes two terminals for a surface mounting process. The SMD type biased condenser microphone includes a grounding terminal for connecting with an external circuit, a diaphragm/backplate set, one end ... | 09/11/2007 |
| 7259624 | Low noise AC coupled amplifier with low band-pass corner and low power A low noise AC coupled amplifier having transistors sharing bias currents, and having a low band-pass corner frequency and consuming low power. The amplifier may be used in a magneto-resistive (MR) preamplifier to amplify a response from a MR sensor. Bipolar and MOS... | 08/21/2007 |
| 7242252 | Transistor bias current regulation apparatus, method, and system A biased transistor circuit utilizes a transistor that exhibits a change in threshold voltage as the drain-to-source voltage changes due to power supply voltage changes. A bias circuit senses the power supply voltage changes and modifies a gate bias voltage on the t... | 07/10/2007 |
| 7224010 | Voltage-controlled amplifier for a signal processing system A voltage-controlled amplifier for a signal processing system includes an input voltage reception end, a first voltage-to-current converter, a reference current generator, a gain adjustment circuit, a first current mirror, and an output circuit. The voltage-controll... | 05/29/2007 |
| 7154340 | Circuit for increasing the unity gain crossover frequency of an amplifier element A circuit having an input amplifier and a second amplifier that provides the circuit with a unity gain crossover frequency that is higher than a unity gain crossover frequency of the input amplifier is provided. The circuit has a control input coupled to a control i... | 12/26/2006 |
| 7142070 | Two-point modulator arrangement A two-point modulator arrangement is specified, said arrangement being developed with respect to conventional two-point modulators to the effect that the high-pass coupling-in point of the modulator that comprises a phase locked loop is formed by an expanded loop fi... | 11/28/2006 |
| 7138875 | Cascoded power amplifier, particularly for use in radio frequency A power amplifier comprising at least a load element and at least an active element inserted, in series to each other, between a first and a second voltage reference is described. Advantageously, according to an embodiment of the invention, the load element comprise... | 11/21/2006 |
| 7135929 | Bias voltage circuit with ultra low output impedance A bias voltage circuit with ultra low output impedance. The circuit incorporates feedback to reduce the output impedance at both low and RF frequencies. The bias circuit outputs a bias signal for biasing an amplifier. The bias circuit includes an input stage that re... | 11/14/2006 |
| 7129779 | Semiconductor device with floating block A band gap circuit using NPN transistors (10, 12) having collectors connected to a power source voltage is employed, and transistor active regions of the NPN transistors (10, 12) and semiconductor elements constituting other signal processing circuits ... | 10/31/2006 |
| 7126413 | Method and corresponding circuit structure to correlate the transconductance of transistors of different types A method and related circuit structure correlate the transconductance value of transistors of different type, for example MOS transistors and bipolar transistors. The structure comprises a first differential cell formed by transistors of the first type and a second ... | 10/24/2006 |
| 7126412 | Preamplification circuit This preamplification circuit comprises a first circuit section, second circuit section the input signal of which is the output signal of the first circuit section, and third circuit section which is connected with the input section of the first circuit section and ... | 10/24/2006 |
| 7099098 | Preamplifier circuit and method for a disk drive device An amplifying circuit and method are disclosed for amplifying electrical signals, such as electrical signals generated by the read head of a disk drive. The circuit includes a pair of cross-coupled differential amplifier circuits. Each differential amplifier circuit... | 08/29/2006 |
| 7098741 | Monolithically integrated power amplifier device A monolithically integrated microwave amplifier device, comprises an input for receiving a microwave signal, a first power amplifier stage (11; 32) having an input coupled to receive the microwave signal, an impedance matching network (16; 39) coupled ... | 08/29/2006 |
| 7084704 | Variable gain amplifier system A system for controlling gain in a polar loop is disclosed. Embodiments of the invention provide for a substantially constant gain tolerant of changes in supply voltage, ambient temperature, and/or manufacturing process. ... | 08/01/2006 |
| 7072478 | Microphone preamplifier A microphone preamplifier. An electrical signal from a microphone is received via a shielded cable by an input stage cascaded with an output stage. The input stage contains an impedance converter and a phase inverter and receives feedback that reduces input capacita... | 07/04/2006 |
| 7042067 | Transmission line with integrated connection pads for circuit elements An optoelectronic assembly includes a circuit board having a set of signal traces, where one or more of the signal traces has a junction point that integrates a pad of a circuit element. Exemplary circuit elements include a resistor, capacitor, and an inductor. The ... | 05/09/2006 |
| 7030680 | On chip power supply A technique, for drawing power from the external signal circuit to power on-chip elements for an integrated circuit diode (ICD), utilizes an integrated diode and capacitor. The capacitor is charged by the external applied voltage during the time the ICD blocks the e... | 04/18/2006 |
| 6998907 | Apparatus and method for receiving high-common mode voltage range signals with low-voltage devices An input stage employs low-voltage MOSFETs as input devices for an operational amplifier circuit that operates at common mode voltages that may exceed the gate-oxide breakdown voltage of the input devices. Also, the input stage is arranged for relatively low noise. ... | 02/14/2006 |
| 6998921 | Method for avoiding avalanche breakdown caused by a lateral parasitic bipolar transistor in an MOS process A power amplifier includes a transconductance stage, a cascode stage, and a connector. The transconductance stage is operable to receive an input voltage signal and to produce an output current signal. The cascode stage communicatively couples to the transconductanc... | 02/14/2006 |
| 6914485 | High voltage supply sensing high input resistance operational amplifier input stage A high voltage operational amplifier input stage utilizes a pair of low voltage p-type MOSFET input devices configured to operate at a common mode voltage. The input stage operates between positive and negative voltage supply rails. Common mode bipolar transistor fe... | 07/05/2005 |
| 6850116 | Accurate, high drive, zero offset voltage buffer A low offset voltage buffer which comprises a first, second, third and fourth MOS device, each comprising a gate, a source and a drain; a current source coupled to the drains of the first and second MOS devices; a current sink coupled to the sources of the third and... | 02/01/2005 |
| 6794942 | Electrical circuits A power amplifier has a pair of FETs of opposite kinds connected together to form a source/drain circuit connected with an output. A second pair of high speed transistors is connected to the input and forms a collector/emitter circuit connected to the gates of the F... | 09/21/2004 |
| 6765438 | Transconductance power amplifier A transconductance power amplifier for amplifying a signal to a capacitive load, including a first N-channel enhancement MOSFET transistor operatively arranged to source current to the capacitive load, wherein the first N-channel MOSFET transistor has a threshold ga... | 07/20/2004 |
| 6756848 | Amplifier device with gain switching, for a cellular mobile telephone in particular An amplifier device with gain switching includes an amplifier, and a configurable load circuit including an inductive element. The configurable load circuit is capable of exhibiting two configurations having two different impedance values. A controllable switch is c... | 06/29/2004 |
| 6744322 | High performance BiFET low noise amplifier According to one exemplary embodiment, a circuit comprises a bipolar transistor having a base, an emitter, and a collector. For example, the bipolar transistor can be an NPN SiGe HBT. The base of the bipolar transistor is an input of the circuit. The emitter of the ... | 06/01/2004 |
| 6693492 | Variable gain low-noise amplifier and method A degenerating device is connected between the emitter of the amplifying transistor and ground. A resistor connected across the FET switch provides a finite limit, the total resistance in the emitter circuit of the amplifying transistor. Additional circui... | 02/17/2004 |
| 6683500 | Auto bias circuit for power amplifier using power MOSFET The present invention relates to a power amplifier for use in audio equipment and the like, and more particularly to an auto bias circuit for a power amplifier using a power MOSFET, which can compensate for a drain current in the power amplifier using the... | 01/27/2004 |
