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Class Information
Number: 330/51
Name: Amplifiers > Combined with automatic amplifier disabling switch means
Description: Subject matter combined with switch means, which may be of the electromechanical or electronic tube type (vacuum, gas, or vapor tubes), to disable or discontinue the operation of the amplifier automatically in response to a predetermined condition.


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

Patent Number Title Of Patent Date Issued
7619478 Operational amplifier having its compensator capacitance temporarily disabled Nov. 17, 2009
7616054 Multiple output power mode amplifier Nov. 10, 2009
7616055 Transmitter apparatus with extended gain control Nov. 10, 2009
7612607 Small size power amplifier with amplifiers switched Nov. 3, 2009
7605648 Power amplifier Oct. 20, 2009
7602237 Amplifying circuit Oct. 13, 2009
7602238 Power amplifier Oct. 13, 2009
7602927 Guitar amplifier with channel-dedicated power switching Oct. 13, 2009
7598808 Gigabit ethernet transceiver with analog front end Oct. 6, 2009
7598807 Differential amplifier circuit, voltage regulator using the differential amplifier circuit, and method for controlling the differential amplifier circuit Oct. 6, 2009
7598804 Amplifier circuit Oct. 6, 2009
7589589 Power amplifying apparatus and mobile communication terminal Sep. 15, 2009
7589588 High-frequency power amplifier and radio communication equipment using the same Sep. 15, 2009
7586372 Programmable gain-frequency profile amplifier Sep. 8, 2009
7583139 Power-efficient automatic gain control Sep. 1, 2009
7579909 Bypass circuit for radio-frequency amplifier stages Aug. 25, 2009
7576587 On-chip source termination in communication systems Aug. 18, 2009
7564302 Method and system for gain control and power saving in broadband feedback low-noise amplifiers Jul. 21, 2009
7565116 High frequency module Jul. 21, 2009
7554390 Method and system for transitioning between operation states in an output system Jun. 30, 2009
7554394 Power amplifier circuit Jun. 30, 2009
7554392 Multiple output power mode amplifier Jun. 30, 2009
7545220 Method for shaping signal pulses Jun. 9, 2009
7538609 Amplifier, transmitter arrangement having an amplifier and method for amplifying a signal May. 26, 2009
7532066 Bias network with stable transient response May. 12, 2009
7528657 Baseband filter start-up circuit May. 5, 2009
7518446 Multi-mode power amplifier with reduced low power current consumption Apr. 14, 2009
7519190 Circuit for reducing pulse noise caused at switching of an analog audio processing circuit Apr. 14, 2009
7518448 Amplifier mode switch Apr. 14, 2009
7514994 Amplifier with high output power dynamic Apr. 7, 2009
7515882 Apparatus, methods and articles of manufacture for a multi-band switch Apr. 7, 2009
7508259 Differential amplifier and data driver for display Mar. 24, 2009
7508260 Bypassable low noise amplifier topology with multi-tap transformer Mar. 24, 2009
7501887 Controllable amplifier and its use Mar. 10, 2009
7501893 Variable gain amplifier circuit Mar. 10, 2009
7498847 Output driver that operates both in a differential mode and in a single mode Mar. 3, 2009
7498877 Power amplifier with automatic switching function Mar. 3, 2009
7495509 Audio power amplifier Feb. 24, 2009
7489191 Circuit and method for reducing bias noise in amplifier circuits Feb. 10, 2009
7486136 Power amplifier Feb. 3, 2009
7486135 Configurable, variable gain LNA for multi-band RF receiver Feb. 3, 2009
7486132 Variable capacitor circuit and integrated circuit containing the same Feb. 3, 2009
7486133 Transmitting output stage with adjustable output power and process for amplifying a signal in a transmitting output stage Feb. 3, 2009
7486134 High efficiency load insensitive power amplifier Feb. 3, 2009
7482866 Audio system with power-on/off noise suppression and audio amplifier thereof Jan. 27, 2009
7479827 Multi-mode power amplifier with high efficiency under backoff operation Jan. 20, 2009
7477101 Fast charge circuit for use in amplifiers Jan. 13, 2009
7471154 Bias circuit for maintaining high linearity at cutback power conditions Dec. 30, 2008
7463742 Signal output circuit Dec. 9, 2008
7459970 Method and apparatus for optimizing power dissipation in a low noise amplifier Dec. 2, 2008

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