| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
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| 05/26/1994 | WO1994011799A1 Switching regulator and amplifier system |
| 05/25/1994 | EP0598578A2 Symmetrical bipolar bias current source with high power supply rejection ratio (PSRR) |
| 05/25/1994 | EP0598445A1 MOS technology amplifier circuit |
| 05/25/1994 | EP0598308A1 Differential comparator circuit |
| 05/24/1994 | US5315268 Audio power amplifier |
| 05/24/1994 | US5315267 Composite differential direct-coupled instrumentation amplifier |
| 05/24/1994 | US5315266 Amplifier having improved capacitive drive capability |
| 05/24/1994 | US5315265 Low intermodulation distortion FET amplifier using parasitic resonant matching |
| 05/24/1994 | US5315264 Rail-to-rail opamp with large sourcing current and small quiescent current |
| 05/24/1994 | US5315263 Push-pull amplifier having bootstrap capacitor isolation |
| 05/24/1994 | US5315231 Symmetrical bipolar bias current source with high power supply rejection ratio (PSRR) |
| 05/24/1994 | US5315169 Power-efficient sample and hold circuit using bipolar transistors of single conductivity type |
| 05/24/1994 | US5315166 Substrate voltage generator and method therefor in a semiconductor device having selectively activated internal stepped-down power supply voltages |
| 05/18/1994 | EP0597420A1 Differential amplifier circuit using quadritail circuit |
| 05/18/1994 | EP0409851B1 Distributed push-pull amplifier |
| 05/17/1994 | US5313207 Differential subtracter improved for higher accuracy and A/D converter including the same |
| 05/17/1994 | US5313121 Circuit for processing signals supplied by a zirconium-type oxygen sensor |
| 05/11/1994 | EP0596568A1 Semiconductor device comprising a monolithic integrated distribited amplifier circuit with wide bandwidth and high gain |
| 05/11/1994 | EP0596562A1 Device comprising a circuit for processing an alternating signal |
| 05/11/1994 | EP0596061A1 Current mirror with at least one pnp transistor |
| 05/11/1994 | EP0449823A4 Improved variolosser |
| 05/11/1994 | CN1086643A Switch for short-circuit at input of power amplfying transistor |
| 05/10/1994 | US5311353 Wide dynamic range optical receivers |
| 05/10/1994 | US5311319 Solid state image pickup device having feedback voltage to amplifier |
| 05/10/1994 | US5311147 High impedance output driver stage and method therefor |
| 05/10/1994 | US5311146 Current mirror for low supply voltage operation |
| 05/10/1994 | US5311145 Combination driver-summing circuit for rail-to-rail differential amplifier |
| 05/10/1994 | US5311144 Ultra-fast differential amplifier |
| 05/10/1994 | US5311141 Active filter circuit |
| 05/10/1994 | US5311115 Enhancement-depletion mode cascode current mirror |
| 05/10/1994 | US5311088 Transconductance cell with improved linearity |
| 05/10/1994 | CA2043413C Dual mode power amplifier for radiotelephone |
| 05/10/1994 | CA1329426C Solid-state high power amplifier arrangement |
| 05/10/1994 | CA1329418C Detector and localizer for low energy radiation emissions |
| 05/04/1994 | EP0595629A1 Trimming circuit |
| 05/04/1994 | EP0595600A1 Semiconductor device package |
| 05/04/1994 | EP0595589A2 Differential output amplifier input stage with rail-to-rail common mode input range |
| 05/04/1994 | EP0595561A1 Amplifiers |
| 05/04/1994 | EP0595350A2 Reproducing circuit for a magnetic head |
| 05/04/1994 | EP0594971A1 High impedance output driver stage and method therefor |
| 05/03/1994 | US5309298 Suppression of magnetic instability in inductive recording heads |
| 05/03/1994 | US5309294 Method and circuitry to provide true voltage bias to a magnetoresistive head |
| 05/03/1994 | US5309114 Pulse step modulator |
| 05/03/1994 | US5309039 Power supply dependent input buffer |
| 04/28/1994 | WO1994009562A1 Non-linear operational transconductance amplifier |
| 04/27/1994 | CN2163480Y Waveguide input micro-frequency band amplifier |
| 04/26/1994 | US5307417 Sound system with howling-prevention function |
| 04/26/1994 | US5307145 Process and apparatus for measuring small quantities of light |
| 04/26/1994 | US5307024 Linearized level-shifting amplifier |
| 04/26/1994 | US5307023 Non-linear operational transconductance amplifier |
| 04/26/1994 | US5307022 High dynamic range modulation independent feed forward amplifier network |
| 04/26/1994 | US5306986 Zero-voltage complementary switching high efficiency class D amplifier |
| 04/26/1994 | US5306960 Common bias circuit for a plurality of discrete IC's each having their own bias circuritry |
| 04/19/1994 | US5305469 Modem for telecommunication system with a reflection amplifier function |
| 04/19/1994 | US5305109 Parallel untuned video if amplifiers supplied signals from TV 1st detector via respective input filters |
| 04/19/1994 | US5304950 System for use with an amplifier |
| 04/19/1994 | US5304949 Buffer circuit |
| 04/19/1994 | US5304943 In-phase combiner and RF recovery system |
| 04/19/1994 | US5304862 Constant current circuit |
| 04/19/1994 | US5304859 Substrate voltage generator and method therefor in a semiconductor device having internal stepped-down power supply voltage |
| 04/13/1994 | EP0592281A1 Wideband high frequency power amplifier |
| 04/13/1994 | CN1085360A Applique circuit of transistor power amplifier circuit |
| 04/12/1994 | US5303397 Semiconductor integrated circuit containing a circuit having an impedance circuit externally attached thereto |
| 04/12/1994 | US5302917 Linear amplifier circuit for audio equipment |
| 04/12/1994 | US5302915 Unity-gain, wide bandwidth, bipolar voltage follower with a very low input current |
| 04/12/1994 | US5302912 Push-pull audio amplifier with crossover distortion compensation |
| 04/12/1994 | US5302911 Preamplifier |
| 04/12/1994 | US5302888 CMOS integrated mid-supply voltage generator |
| 04/06/1994 | EP0591032A1 Push-pull power amplifier with transformer feedback for metric waves |
| 04/06/1994 | EP0590903A1 Output limiter for class-D BICMOS hearing aid output amplifier |
| 04/06/1994 | EP0590246A2 Power supply dependent input buffer |
| 04/05/1994 | US5300897 Amplifier protection circuit |
| 04/05/1994 | US5300896 Bootstrapped, AC-coupled differential amplifier |
| 04/05/1994 | US5300895 Method for terminating harmonics of transistors |
| 04/05/1994 | US5300893 Amplifier |
| 03/31/1994 | WO1994007304A1 High power solid state r.f. amplifier |
| 03/30/1994 | EP0589676A1 Variable voltage to current conversion circuit |
| 03/30/1994 | CN2160170Y Transistor constant-current power amplifier |
| 03/29/1994 | US5299009 Amplifier with a tuned output transformer |
| 03/29/1994 | US5298812 Regulating circuit as for controlling the speed of a motor |
| 03/29/1994 | US5298809 Balanced type differential integrating circuit |
| 03/23/1994 | EP0588424A1 Buest control in a power amplifier for a TDMA communication system |
| 03/23/1994 | EP0587965A1 Differential transconductance stage, dynamically controlled by the input signal's amplitude |
| 03/23/1994 | EP0587962A1 Method and circuit for implementing an impedance, in particular for D.C. telephonic applications |
| 03/23/1994 | EP0587945A1 Amplitude regulation circuit |
| 03/23/1994 | EP0587943A1 Voltage follower circuit |
| 03/22/1994 | US5296825 Bias circuit having signal output to detector portion |
| 03/22/1994 | US5296762 Bidirectional microwave amplifier apparatus |
| 03/22/1994 | US5296754 Push-pull circuit resistant to power supply and temperature induced distortion |
| 03/17/1994 | WO1994006206A1 Push pull buffer with noise cancelling symmetry |
| 03/16/1994 | EP0587509A1 Voltage-current converter circuit |
| 03/16/1994 | EP0587265A1 Cross coupled op-amp input transconductance reduction |
| 03/16/1994 | EP0586730A1 Circuit arrangement for transforming a balanced input signal into an unbalanced output signal |
| 03/16/1994 | CN1083986A Highdynamic range modulation independent feed forward amplifier network |
| 03/15/1994 | US5295161 Fiber optic amplifier with active elements feedback circuit |
| 03/15/1994 | US5294893 Differential output amplifier input stage with rail-to-rail common mode input range |
| 03/15/1994 | US5294892 Two-stage rail-to-rail class AB operational amplifier |
| 03/15/1994 | CA2003401C Amplifier circuit using feedback load |
| 03/10/1994 | DE4324649A1 Fast, low power DRAM sense amplifier - uses current mirror and complementary CMOS FET's for improved speed and low power. |
| 03/09/1994 | EP0586251A1 Power amplifier having high output voltage swing and high output drive current |