Patents
Sitemap › H03 - Basic electronic circuitry › H03F - Amplifiers › H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008)
09/1998
09/22/1998US5812030 Amplifier device capable of carrying out a stable amplifying operation without a gain variation
09/22/1998US5812029 Gain control circuit and method
09/22/1998US5812028 Audio signal amplifier circuit and a portable acoustic apparatus using the same
09/22/1998US5812027 Spike insensitive intermediate frequency amplifier
09/22/1998US5812026 Differential amplifier with improved voltage gain
09/22/1998US5812024 Stabilization of gain-bandwidth product in analog circuit devices
09/22/1998US5812023 Voltage offset compensation circuit
09/22/1998US5812022 Differential amplifier circuit having low noise input transistors
09/22/1998US5812005 Auto zero circuitry and associated method
09/22/1998CA2124718C Sequential amplifier
09/17/1998WO1998040967A2 Voltage-to-current converter with error correction
09/17/1998WO1998040903A1 Device, notably for controlling a travelling-wave tube
09/17/1998WO1998028840A3 Amplifier with improved output voltage swing
09/17/1998WO1998026502A3 Linear high-frequency amplifier with high input impedance and high power efficiency
09/17/1998DE19810620A1 Wideband damping unit for converting band of high frequency signals
09/17/1998DE19752216A1 Microwave and millimetre wave circuit with amplifier and separation filter
09/17/1998DE19710100A1 Anordnung insbesondere für die Ansteuerung einer Wanderfeldröhre This unit ideal for driving a traveling wave tube
09/16/1998CN2291750Y Current frequency divider of audio-frequency power amplifier
09/16/1998CN1193425A Gain control
09/15/1998US5809410 Low voltage RF amplifier and mixed with single bias block and method
09/15/1998US5809408 Variable gain circuit and radio apparatus using the same
09/15/1998US5808527 Tunable microwave network using microelectromechanical switches
09/15/1998US5808515 Semiconductor amplifying circuit having improved bias circuit for supplying a bias voltage to an amplifying FET
09/15/1998US5808514 Three state output method and apparatus for high speed amplifiers
09/15/1998US5808513 Rail-to-rail input common mode range differential amplifier that operates with very low rail-to-rail voltages
09/15/1998US5808501 Voltage level shifter and method
09/15/1998US5808426 Horizontal drive circuit for large current in video display
09/15/1998US5808296 Programmable detection sensor with means to automatically adjust sensor operating characteristics to optimize performance for both high gain and low contrast applications
09/15/1998CA2124480C Dc coupled amplifier fed by an rf detector
09/11/1998WO1998039952A1 Apparatus and method for monitoring, controlling, displaying and dissipating an electrostatic charge
09/10/1998DE19705168A1 Differential amplifier circuit fed from symmetric signal source
09/09/1998EP0863640A2 Improved physical layer interface device
09/09/1998EP0863609A2 Amplifier circuits
09/09/1998EP0863608A1 Switchable high frequency amplifier
09/09/1998EP0863607A1 Method and apparatus for linearizing an efficient class D/E power amplifier using delta modulation
09/09/1998CN2290953Y Power amplifier containing space stereo sound processing device
09/09/1998CN1192829A Tuning amplifier
09/09/1998CN1192594A Planar dielectric integrated circuit
09/08/1998US5805986 High-frequency step attenuator suitable for transmission circuit
09/08/1998US5805716 For processing a received audio signal
09/08/1998US5805062 2-wire optovoltaic loop-powered isolation amplifier with current bootstrapping
09/08/1998US5805023 High frequency amplifier, receiver, and transmitter system
09/08/1998US5805021 High swing low power general purpose operational amplifier
09/08/1998US5805020 Silent start class D amplifier
09/08/1998US5805019 Voltage gain amplifier for converting a single input to a differential output
09/08/1998US5805015 Current generator stage used with integrated analog circuits
09/08/1998US5805011 Self-calibration system for logarithmic amplifiers
09/08/1998US5805004 Integrated circuit arrangement for minimizing the temperature-dependant offset voltage of an amplifier
09/08/1998US5804997 Current-to-voltage converting device and light receiver
09/02/1998EP0862271A2 Comparator circuit
09/02/1998EP0862264A2 Feedback amplifier and optical receiver using the same
09/02/1998EP0862216A2 Planar dielectric integrated circuit
09/02/1998EP0862102A1 Load pole stabilized voltage regulator
09/02/1998EP0861520A1 Small signal linearization in power switching amplifiers
09/01/1998US5802464 Broadcast or communications receiver including ceramic filter, intermediate frequency amplifier and passive, non-inductive band-pass filters
09/01/1998US5801588 Preamplifier for optical communication
09/01/1998US5801584 Constant-current circuit using field-effect transistor
09/01/1998US5801564 Reduced skew differential receiver
08/1998
08/27/1998WO1998037731A1 High-fidelity and high-efficiency analog amplifier combined with digital amplifier
08/27/1998WO1998037628A1 A reconstruction filter for eliminating the switching residue in a switched system or similar
08/27/1998WO1998037627A1 Series powered, parallel output radio frequency generator
08/27/1998WO1998037626A1 Device and process for telecommunication
08/27/1998DE19707315A1 Circuit arrangement for conversion of optic signal in electric signal
08/26/1998EP0860942A1 Tuning amplifier
08/26/1998EP0860024A2 Circuit structure having a flip-mounted matrix of devices
08/26/1998CN1191414A Tunable MOS linear transconductance amplifier
08/25/1998US5798673 Low voltage operational amplifier bias circuit and method
08/25/1998US5798672 Single-output dual-supply class D amplifier
08/25/1998US5798668 Low-power transconductance driver amplifier
08/25/1998US5798665 Bias controller for decreasing bias current supplied to amplifier without sacrifice if distortion
08/25/1998US5798664 Offset cancelling amplifier circuit having Miller integrator as offset detector
08/25/1998US5798660 Cascoded differential pair amplifier with current injection for gain enhancement
08/25/1998US5797964 Selectively programmable variable-voltage direct-current voltage source
08/20/1998DE19800870A1 Resonant electromechanical oscillation sensor
08/20/1998DE19737379A1 Integrated microwave circuit operated at preset frequency
08/20/1998DE19707313A1 Conversion of high frequency optical signals into electrical signals
08/19/1998EP0858667A1 Choke
08/19/1998EP0581835B1 Circuit for controllable amplifier
08/19/1998CN1190861A Two-accustic channel three-dimension stereo processor
08/18/1998US5796853 Speaker and amplifier system
08/18/1998US5796308 Differential attenuator common mode rejection correction circuit
08/18/1998US5796306 Wide range variable output amplifier apparatus with high efficiency
08/18/1998US5796302 Single pole negative feedback for class-D amplifier
08/18/1998US5796301 Offset cancellation circuit
08/18/1998US5796294 Circuits for generating a current which is proportional to absolute temperature
08/18/1998US5796281 Input buffer circuit with hysteresis for noise control
08/18/1998CA2154584C An amplifier for use in a radiotelephone
08/13/1998WO1998035437A2 An amplifier circuit, a transmitter and a wireless telephone
08/13/1998WO1998035386A1 Radio architecture
08/12/1998EP0857372A1 Amplifier circuit
08/12/1998EP0728297B1 Circuit assembly for the control of signals
08/11/1998US5793256 Integrated circuit preamplifier for an optical receiver
08/11/1998US5793255 Tuned RF amplifier
08/11/1998US5793253 High power solid state microwave transmitter
08/11/1998US5793252 For electronic audio signals
08/11/1998US5793237 Current one-shot circuit with linear response to an input signal transition
08/11/1998US5792956 Signal conditioning circuit apparatus and method
08/06/1998DE19804379A1 Scanning and holding circuit with storage capacitor
08/05/1998EP0856239A1 Class d hearing aid amplifier with feedback
08/05/1998EP0856195A1 Biasing arrangement for linear detector array
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