| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 02/03/2005 | DE20320726U1 Low frequency class D vacuum tube amplifier has multivibrator that varies clock output pulse duty cycle according to control voltage so pulse time-voltage area difference varies with input signal |
| 02/03/2005 | DE10119039B4 Vorrichtung zur Übertragung von Daten über das Stromversorgungsnetz Apparatus for transmitting data over the power supply network |
| 02/03/2005 | CA2533498A1 Modulated triangular wave amplifier |
| 02/02/2005 | EP1503497A2 Apparatus and method for converting a fully-differential class-AB input signal to a rail-to-rail single ended output signal |
| 02/02/2005 | EP1503496A1 Photocurrent-to-voltage conversion apparatus including non-diode-connected clamping MOS transistor |
| 02/02/2005 | EP1503495A2 Digital feed-forward system |
| 02/02/2005 | EP1356584B1 Class e doherty amplifier topology for high efficiency signal transmitters |
| 02/02/2005 | EP1110133B1 Current mirror arrangement |
| 02/02/2005 | CN2676495Y Device preventing generation of activation noise |
| 02/02/2005 | CN1575566A Method and system for DSL power saving |
| 02/02/2005 | CN1575545A Operational transconductance amplifier circuit |
| 02/02/2005 | CN1575544A Auto-zeroed ping-pong amplifier with low transient switching |
| 02/02/2005 | CN1575543A Balanced transconductor and electronic device |
| 02/02/2005 | CN1575542A Operational amplifier with chopped input transistor pair |
| 02/02/2005 | CN1575541A 功率放大器模块 Power Amplifier Module |
| 02/02/2005 | CN1574675A Time-division-duplexing type power amplification module |
| 02/02/2005 | CN1574646A 电平移动电路 A level shift circuit |
| 02/02/2005 | CN1574633A Transmitter circuit, transmission circuit and driver unit |
| 02/02/2005 | CN1574612A High frequency differential circuit, differential amplifier, differential mixer, differential oscillator, and radio circuit using same |
| 02/02/2005 | CN1574611A Mute circuit and btl audio amplifier apparatus |
| 02/02/2005 | CN1574536A Loudspeaker apparatus equipped with optional devices |
| 02/02/2005 | CN1574524A 激光器功率控制电路 A laser power control circuit |
| 02/02/2005 | CN1574088A Apparatus for generating driving voltage for sense amplifier in a memory device |
| 02/02/2005 | CN1573902A 显示控制电路 A display control circuit |
| 02/02/2005 | CN1187895C Electronic apparatus with power amplifier |
| 02/02/2005 | CN1187894C Multistage amplifier |
| 02/02/2005 | CN1187893C Multi-stage difference amplifier with common-mode feedback circuit |
| 02/02/2005 | CN1187892C CMOS class A or B amplifier |
| 02/02/2005 | CN1187891C 半导体集成电路 The semiconductor integrated circuit |
| 02/02/2005 | CN1187890C 半导体放大器电路与系统 Semiconductor amplifier circuits and systems |
| 02/01/2005 | US6850752 Single-to-differential conversion circuit outputting DC-balanced differential signal |
| 02/01/2005 | US6850574 Multiple bandwidth amplifier control systems for mobile stations and methods therefor |
| 02/01/2005 | US6850378 Method and apparatus for providing quadrature biasing for coupled-pair circuits |
| 02/01/2005 | US6850120 Semiconductor device including semiconductor element of high breakdown voltage |
| 02/01/2005 | US6850118 Amplifier circuit and power supply provided therewith |
| 02/01/2005 | US6850117 CMOS transceiver having an integrated power amplifier |
| 02/01/2005 | US6850116 Accurate, high drive, zero offset voltage buffer |
| 02/01/2005 | US6850109 Linear voltage subtractor/adder circuit and MOS differential amplifier circuit therefor |
| 02/01/2005 | US6850096 Interpolating sense amplifier circuits and methods of operating the same |
| 02/01/2005 | US6849958 Semiconductor latches and SRAM devices |
| 02/01/2005 | US6849478 Power amplifier having high heat dissipation |
| 01/27/2005 | WO2005008884A1 Amplifying circuit comprising an envelope modulated limit cycles modulator circuit |
| 01/27/2005 | WO2004095687A3 A facilitating fault tolerance in a rf amplifier system |
| 01/27/2005 | WO2004086611A3 Systems and methods for implementing a sample rate converter using hardware and software to maximize speed and flexibility |
| 01/27/2005 | US20050018061 Apparatus and method for amplifying analog signal and analog preprocessing circuits and image pick-up circuits |
| 01/27/2005 | US20050017992 Display apparatus and driving device for displaying |
| 01/27/2005 | US20050017809 Semiconductor integrated circuit |
| 01/27/2005 | US20050017808 Differential amplifier |
| 01/27/2005 | US20050017807 Linear-in-decibel variable gain amplifier |
| 01/27/2005 | US20050017806 Integrated circuit with an amplifier |
| 01/27/2005 | US20050017805 Isolated converter with synchronized switching leg |
| 01/27/2005 | US20050017804 Compensated, digital class d amplifier |
| 01/27/2005 | US20050017803 Switched mode power amplifier |
| 01/27/2005 | US20050017802 Digital cross cancellation system |
| 01/27/2005 | US20050017800 System and method for reducing dynamic range and improving linearity in an amplication system |
| 01/27/2005 | US20050017799 Loop filter for class D amplifiers |
| 01/27/2005 | US20050017798 Audio amplifier |
| 01/27/2005 | US20050017797 Switched-capacitor, common-mode feedback circuit for a differential amplifier without tail current |
| 01/27/2005 | US20050017795 Bias voltage generating circuit and differential amplifier |
| 01/27/2005 | US20050017784 Variable gain amplifier and a large scale integrated circuit installed thereof applicable to processing signals |
| 01/27/2005 | US20050017780 Digital control variable delay circuit which is hardly susceptible to noise |
| 01/27/2005 | US20050017767 Apparatus and method for noise sensitivity improvement to a switching system |
| 01/27/2005 | US20050017761 Multi-input differential circuit |
| 01/27/2005 | US20050017190 Biosensor circuit and sensor array consisting of a plurality of said biosensor circuits and biosensor array |
| 01/27/2005 | US20050016283 Transconductance circuit for piezoelectric transducer |
| 01/27/2005 | DE10328035A1 Circuit for automatic reduction of offset voltage, especially for electronic trigger device, has integrating amplifier arrangement connected between amplifier arrangement output/input |
| 01/26/2005 | EP1501188A1 Differential amplifier |
| 01/26/2005 | EP1501187A1 System and method for reduced dynamic range and improving linearity in an amplification system |
| 01/26/2005 | EP1500190A1 Electronic amplifier circuit |
| 01/26/2005 | EP1500189A2 Operational amplifier with increased common mode input range |
| 01/26/2005 | EP1500188A2 Power amplifier |
| 01/26/2005 | EP1500187A1 A differential amplifier |
| 01/26/2005 | EP1379929A4 Amplifier system with on-demand power supply boost |
| 01/26/2005 | EP1116324A4 Differential amplifier with gain linearization through transconductance compensation |
| 01/26/2005 | CN2674762Y Adjustable loadspeaking alarm for locomotive |
| 01/26/2005 | CN2674761Y Bias apparatus for driving CMOS transistor I/O |
| 01/26/2005 | CN1572056A 传感器信号输出电路 The sensor signal output circuit |
| 01/26/2005 | CN1572055A Rf功率放大器电路 Rf power amplifier circuit |
| 01/26/2005 | CN1571274A Multi level class-D amplifier by means of 2 physical layers |
| 01/26/2005 | CN1571273A Superlinear transistor power amplifier |
| 01/26/2005 | CN1571272A Parallel distortion signal generator and power amplifier applied circuit thereof |
| 01/26/2005 | CN1571263A Differential current output unit |
| 01/26/2005 | CN1186885C 差分线路驱动器 Differential Line Driver |
| 01/25/2005 | US6847904 Multi-channel programmable gain amplifier controlled with a serial interface |
| 01/25/2005 | US6847692 Data transmission system |
| 01/25/2005 | US6847263 Optical receiver with wide dynamic range transimpedance amplifier |
| 01/25/2005 | US6847258 Power amplifier, power amplifying method and radio communication apparatus |
| 01/25/2005 | US6847257 Efficient minimum pulse spread spectrum modulation for filterless class D amplifiers |
| 01/25/2005 | US6847236 Buffer/voltage-mirror arrangements for sensitive node voltage connections |
| 01/25/2005 | US6847226 Semiconductor instrument |
| 01/25/2005 | US6847108 Semiconductor integrated circuit |
| 01/20/2005 | WO2005006544A1 Operational amplifier with constant offset and apparatus comprising such an operational amplifier |
| 01/20/2005 | WO2005006543A1 Systematic offset free operational amplifier and apparatus comprising such an operational amplifier |
| 01/20/2005 | WO2005006542A1 Cartesian loop transmitter and method of adjusting an output level of such transmitter |
| 01/20/2005 | WO2005006541A1 High-frequency power amplifying circuit |
| 01/20/2005 | WO2005006540A1 Apparatus, amplifier, system and method for receiver equalization |
| 01/20/2005 | WO2005006392A2 Low voltage circuit for interfacing with high voltage analog signals |
| 01/20/2005 | WO2005004716A1 Amplifier system for determining parameters of a patient |
| 01/20/2005 | WO2004068705A8 Preamplifier circuit, clock switch circuit, and optical receiver using the same |
| 01/20/2005 | WO2004036739A3 Continuous bias circuit and method for an amplifier |