Quotables
"I hate what they've done to my child...I would never let my own children watch it. "
Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
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| Number | Title | Issue Date |
| 7298211 | Power amplifying apparatus A push-pull amplifier includes a pair of transistors, wherein each of the transistors has a control terminal, a first terminal, and a second terminal. A current that flows between the first terminal and the second terminal is controlled in accordance with signals ap... | 11/20/2007 |
| 7256654 | Amplifying a signal using a current shared power amplifier A power amplifier includes amplifier stages. An amplifier stage includes a transistor, and at least one amplifier stage comprises a driver stage. The amplifier stages include a first amplifier stage having a first transistor and associated with a first output power,... | 08/14/2007 |
| 7242250 | Power amplifier A power amplifier includes an input circuit, three power supply lines with voltages successively decreasing in an order of first, second and third power supply lines, a push-side driving circuit and a pull-side driving circuit which receive control signals from the ... | 07/10/2007 |
| 7205836 | SiGe differential cascode amplifier with miller effect resonator A high-power, high frequency (1–100 GHz) power amplifier, made using SiGe transistors. A differential common-emitter amplifier section supplies the voltage amplification, allowing the total voltage swing of the amplifier to be twice the breakdown voltage of the in... | 04/17/2007 |
| 7053714 | Methods and apparatus for switching between class A and A/B operation in a power amplifier Methods and apparatus contemplate: an output transformer having at least first and second separate primary windings and at least one secondary winding, each winding including a first (in phase) end and a second (out of phase) end; at least first and second active el... | 05/30/2006 |
| 7053699 | Current output stages Current output stages are provided. In accordance with an embodiment, a current output stage includes a voltage follower circuit, a first current mirror and a second current mirror. A node of the voltage follower circuit provides a voltage that follows a voltage at ... | 05/30/2006 |
| 6933787 | Linearized darlington amplifier An apparatus comprising a Darlington transistor pair and a common-base transistor. The Darlington transistor pair may be configured to generate an output signal in response to an input signal. The common-base transistor may (i) be coupled between an output transisto... | 08/23/2005 |
| 6925106 | Predistortion type distortion compensation apparatus To update the control value to a value of higher precision in a predistortion type distortion compensation apparatus for compensating the distortion occurring in an amplifier for amplifying an input signal by the control using a control value corresponding to the le... | 08/02/2005 |
| 6838940 | High frequency power amplifier circuit A high frequency power amplifier circuit comprises an input circuit receiving an input signal; a first cascode stage connected to the input circuit and a DC voltage source and comprising at least one FET having a source, a drain, and a gate; an second cascode stage ... | 01/04/2005 |
| 6828857 | High gain, high bandwidth CMOS transimpedance amplifier A three-stage transimpedance amplifier, where the first stage is a shunt-shunt feedback amplifier, the second stage is a simple voltage amplifier, and the third stage is a shunt-shunt feedback amplifier. The third stage comprises a pMOSFET serially connected with a ... | 12/07/2004 |
| 6753726 | Apparatus and method for an offset-correcting sense amplifier An apparatus and method for a sensing circuit for cancelling an offset voltage. Specifically, in one embodiment, a CMOS inverter amplifier amplifies an input signal present at an input node. A resistive feedback circuit is coupled to the CMOS inverter amplifier for ... | 06/22/2004 |
| 6737924 | Differential, double feedback CMOS transimpedance amplifier with noise tolerance A transimpedance amplifier having a first input port to connect to a signal source having an output impedance, and a second input port loaded by an impedance matched to the output impedance of the signal source, the amplifier comprising three stage pairs. The first ... | 05/18/2004 |
| 6630866 | High beta output stage for high speed operational amplifier The present invention provides an high beta, high speed operational amplifier output stage (100). The advantages of the operational amplifier output stage over conventional methods disclosed is up to 댢 rather than a single beta. The pres... | 10/07/2003 |
| 6630865 | Push-pull amplifiers A push pull amplifier is disclosed having upper and lower output devices operating in a mode in which the devices drive a load alternately. The amplifier includes bias means for providing a bias current to the output devices at all times. The bias means i... | 10/07/2003 |
| 6603347 | Amplifier having controllable input impedance An amplifier circuit includes a circuit input, and a circuit output. An inverter, including first and second MOS transistors is connected between first and second supply voltages, and has an inverter input connected to the circuit input, and an inverter o... | 08/05/2003 |
| 6603352 | Switched-mode power amplifier integrally performing power combining A switched-mode power amplifier is configured for performing power amplification of a plurality of signals input thereto and integrally summing (combining) those signals. Conceptually, this is achieved by replacing the center-tapped input winding componen... | 08/05/2003 |
| 6600371 | Low noise amplifier It is shown a low noise amplifier comprising a first circuit block suitable for converting a first amplifier input voltage signal into current, a second circuit block adapted to divide the current coming from said first block, said second block being cont... | 07/29/2003 |
| 6593813 | Negative feed-back amplifier and method for negative feed-back A negative feed-back amplifier is provided in which a distortion of signals is reduced and a dynamic range is increased. An input signal is input to a base of a transistor and is output from a collector as a reversed signal and a non-reversed signal is ou... | 07/15/2003 |
| 6593811 | Nonlinear feedback linearizer The present invention relates generally to an amplifier such as that with the radio frequency (RF) spectrum having a nonlinear feedback loop to cancel out distortions in the input signal, and method therefor.... | 07/15/2003 |
| 6501252 | Power supply circuit A power supply circuit is equipped with a first amplification path 10 in which a first potential is input and that supplies current to an output terminal when a control signal is in a first state; a second amplification path 20 in which a second potential... | 12/31/2002 |
| 6144256 | Wide bandwidth, current sharing, Mosfet audio power amplifier with multiple feedback loops A wide bandwidth, multi-FET current sharing output stage, MOS audio power amplifier employs multiple feedback loops. An audio input is supplied to a voltage feedback amplifier stage driving a push-pull voltage gain/phase splitter stage. A bias adjustment ... | 11/07/2000 |
| 6137273 | Circuit for supplying a high precision current to an external element The present invention concerns a circuit (30; 50) for supplying a first current (I3) to an external element (3), this current having to be supplied with high precision at a desired nominal value. The current supply circuit includes a first transistor (T3)... | 10/24/2000 |
| 6011438 | Push-pull wideband semiconductor amplifier A push-pull wideband semiconductor amplifier for use in, for example, a CATV (cable television) system. The amplifier suppresses deterioration of composite second-order (CSO) distortion in output signals. The push-pull wideband amplifier includes: a divid... | 01/04/2000 |
| 5977571 | Low loss connecting arrangement for photodiodes Each of a plurality of photodiodes forming a photodetector is mounted on a respective metal pad on the surface of a semiconductor integrated circuit chip including a corresponding number of amplifier circuits for detecting the photocurrent from respective... | 11/02/1999 |
| 5973564 | Operational amplifier push-pull output stage with low quiescent current An operational amplifier output circuit having a low, stable quiescent current includes an input stage (22) receiving an input voltage (vin ") and producing first (v1) and second (v2) signals. An output stage (23) includes... | 10/26/1999 |
| 5781072 | Dual push-pull amplifier circuit and method An amplifier circuit (30) has the capability for driving a large number of loads while still maintaining the desirable gain response. The amplifier circuit (30) includes two push-pull amplifier circuits (31 and 41). A first push-pull amplifier circuit (31... | 07/14/1998 |
| 5770974 | Thermal compensation circuit affecting amplifier gain The present invention solves the gain, noise figure, and distortion problems of prior art thermal compensation circuits by incorporating a temperature-compensating circuit in the feedback loop of a transistor amplifier arrangement. Using this method, the ... | 06/23/1998 |
| 5742205 | Field effect transistor cable television line amplifier An amplifier circuit for a cable access television line amplifier has a circuit input and a circuit output and includes a first cascode amplifier having a first input and a first output, and a second cascode amplifier having a second input and a second ou... | 04/21/1998 |
| 5734287 | Control of distortion in a line-powered amplifier with a rail-to-rail output voltage swing Distortion control in a push-pull output stage of a speech amplifier of a telephone powered through the telephone line is more effectively and advantageously implemented by independently sensing an eventual state of saturation reached by any of the two ou... | 03/31/1998 |
| 5708393 | High voltage operational amplifier output stage A current sourcing output stage for a high voltage operational amplifier receives a low voltage input signal (VIN) and provides a high current output signal corresponding to the low voltage input signal at an output terminal (8). A first PNP tr... | 01/13/1998 |
| 5387878 | Amplification circuit An amplification circuit includes a push-pull type output circuit including first and second output transistors operating complimentarily connected in series between dc current source terminals, the bases of the first and second transistors being driven b... | 02/07/1995 |
| 5376900 | Push-pull output stage for amplifier in integrated circuit form A push-pull output stage for electronic integrated circuits includes two NPN transistors (Q1, Q2) connected in series between two supply terminals. The output (S) is the junction point of the transistors. A third NPN transistor (Q3) has its base and its c... | 12/27/1994 |
| 5202646 | Output stage for amplifiers An output stage for an amplifier includes first and second load current-carrying n-p-n output transistors disposed in different respective amplifier branches having different amplification properties. Negative feedback and limiting circuitry provides a ne... | 04/13/1993 |
| 4940949 | High efficiency high isolation amplifier A broadband RF amplifier with high efficiency and high reverse isolation having a common emitter stage connected in a cascode configuration to a common base stage, said cascode driving the common base stage in a push-pull operation with a common collector... | 07/10/1990 |
| 4918400 | Amplifier circuit An amplifier circuit comprising an input amplifier stage, a push-pull output stage, a bias stage having the same construction as the input amplifier stage, a first resistor to be given a current flowing through the bias stage, second and third resistors c... | 04/17/1990 |
| 4764735 | Push-pull transformer feed-back amplifier Amplifier for radio frequencies including first and second common-base-connected transistors in push-pull coupling; an input transformer including two identical input windings each in series connection with the emitter of the respective first and second t... | 08/16/1988 |
| 4731589 | Constant current load and level shifter circuitry Level shifter circuitry, as for an operational amplifier, imposes no current load on the preceding amplifier stage associated with its level shifter function. A common-collector-amplifier first transistor has base and emitter connections to the input and ... | 03/15/1988 |
| 4723111 | Amplifier arrangement In an output amplifier (20) which is operated in class AB with the aid of quiescent-current means (40, 50) and which comprises first output-transistor configuration (T10 -T14) and a second output-transistor configuration (T15 | 02/02/1988 |
| 4706038 | Wideband linear Darlington cascode amplifier This disclosure relates to a multi-channel power amplifier utilizing Darlington pairs as the inputs of a cascode amplifier. The Darlington pair inputs may implement an added grounded resistor to the emitter of the pre-driver transistor in each Darlington ... | 11/10/1987 |
| 4647866 | Audio amplifier output stage Apparatus and method for driving a non-centertapped load such as a loudspeaker from a low voltage supply such as a single dry cell, with increased efficiency. A push-pull signal having similar polarity voltage excursions is applied to opposite terminals o... | 03/03/1987 |
