| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 10/30/1990 | CA1275737C Digital-to-analog converter |
| 10/30/1990 | CA1275709C Transconductance amplifier |
| 10/24/1990 | EP0393404A2 Stabilization and calibration of precision electronic circuit component |
| 10/23/1990 | US4965587 Antenna which is electronically reconfigurable in transmission |
| 10/23/1990 | US4965530 Parallelled amplifier with switched isolation resistors |
| 10/23/1990 | US4965529 High current, very wide band transconductance amplifier |
| 10/23/1990 | US4965527 Gain equalizer for microwave balanced amplifier configuration |
| 10/23/1990 | US4965526 Hybrid amplifier |
| 10/23/1990 | US4965510 Integrated semiconductor circuit |
| 10/23/1990 | US4965468 High resolution, fully differential CMOS comparator |
| 10/18/1990 | WO1990012454A1 Gyrator circuits |
| 10/18/1990 | WO1990012452A1 Optical receivers |
| 10/17/1990 | EP0392373A2 Circuit device for potentialfree driving of a field effect transistor |
| 10/17/1990 | EP0392062A1 Integrable amplifier circuit |
| 10/16/1990 | US4963836 Wide range high stability variable gain amplifier |
| 10/16/1990 | US4963835 Differential amplifier with an improved gain characteristic in a high frequency region |
| 10/16/1990 | US4963834 Operational amplifier |
| 10/13/1990 | CA2013727A1 Switching amplifier |
| 10/10/1990 | EP0391055A2 Output stage for an operational amplifier |
| 10/09/1990 | US4962328 Charge amplifier circuit with drift compensation |
| 10/09/1990 | US4962323 High speed auto zero comparator |
| 10/04/1990 | WO1990011644A1 Differential amplifier with gain compensation |
| 10/03/1990 | EP0390593A2 Heterojunction bipolar transistor integrated circuit |
| 10/03/1990 | EP0390588A2 Input/output switching circuit |
| 10/03/1990 | EP0390494A2 Wideband amplifier using fet |
| 10/03/1990 | EP0389654A1 Integrated circuit amplifier |
| 10/03/1990 | EP0223854B1 Rf input drive saturation control loop |
| 10/02/1990 | US4961046 Voltage-to-current converter |
| 10/02/1990 | US4961009 Current-voltage converting circuit utilizing CMOS-type transistor |
| 10/02/1990 | CA1274884A1 Balanced output analog differential amplifier circuit |
| 09/26/1990 | EP0388802A2 Error amplifier for use with parallel operated autonomous current or voltage regulators using transconductance type power amplifiers |
| 09/25/1990 | US4959623 Low impedance buffer circuit |
| 09/25/1990 | US4959622 Operational amplifier with precise bias current control |
| 09/25/1990 | US4959621 Differential amplifier having externally controllable power consumption |
| 09/20/1990 | DE3908076A1 Alternating-voltage amplifier |
| 09/19/1990 | EP0387951A1 Current amplifier |
| 09/19/1990 | EP0387949A1 Integrated semiconductor device with an active insulator circuit |
| 09/19/1990 | EP0387939A1 Differential amplifiers |
| 09/19/1990 | EP0387463A1 Improvements to complementary emitter follower drivers |
| 09/19/1990 | EP0387416A2 Integrated light-receiving semiconductor device |
| 09/19/1990 | EP0208765B1 Automatic reduction of intermodulation products in high power linear amplifiers |
| 09/18/1990 | US4958133 CMOS complementary self-biased differential amplifier with rail-to-rail common-mode input-voltage range |
| 09/13/1990 | DE3907139A1 Circuit arrangement for controlling a DC motor |
| 09/12/1990 | EP0386933A2 Audio amplifier with phase modulated pulse width modulation |
| 09/11/1990 | USRE33333 Digital audio amplifier having a high power output level and low distortion |
| 09/11/1990 | US4956729 Video signal preamplifier circuit |
| 09/11/1990 | US4956716 Imaging system employing charge amplifier |
| 09/11/1990 | US4956615 Input circuit for high-frequency amplifiers |
| 09/11/1990 | US4956613 Differential amplifier having externally controllable power consumption |
| 09/05/1990 | EP0385672A2 Induction coil driver |
| 09/05/1990 | EP0385641A2 A high efficiency UHF linear power amplifier |
| 09/05/1990 | EP0385018A2 MOS analog amplifier |
| 09/04/1990 | US4954769 CMOS voltage reference and buffer circuit |
| 09/04/1990 | US4954757 Linear deflection amplifier with energy recovery |
| 09/01/1990 | CA2011193A1 Broadband nonlinear drive control network for linear amplifiers arranged in several amplifier channels |
| 09/01/1990 | CA2008442A1 Induction coil driver |
| 08/29/1990 | EP0384710A1 Amplifier circuit operable at low power source voltage |
| 08/29/1990 | EP0384510A1 Differential amplifier |
| 08/29/1990 | EP0384205A2 Input stage for a broadband optical receiver |
| 08/29/1990 | EP0383968A1 Amplifier stage circuit |
| 08/29/1990 | EP0165312B1 Pre-amplifier in focal plane detector array |
| 08/28/1990 | US4952890 Phase modulation compensated amplitude modulator using digitally selected amplifiers |
| 08/28/1990 | US4952885 MOS stage with high output resistance particularly for integrated circuits |
| 08/28/1990 | US4952884 Pulse width modulation amplifier circuit |
| 08/28/1990 | US4952866 Voltage-to-current converters |
| 08/28/1990 | US4952825 Semiconductor integrated circuit having signal level conversion circuit |
| 08/28/1990 | US4952821 Voltage detection circuit and comparison voltage generator therefor |
| 08/28/1990 | US4952796 Light detection circuit having a junction reverse-biased by a current generator |
| 08/23/1990 | WO1990009703A1 Amplifier arrangement and communication line circuit using same |
| 08/22/1990 | EP0383397A2 Current conveyor circuit |
| 08/22/1990 | EP0383311A2 Microwave power amplifier using phase inverters |
| 08/22/1990 | EP0383293A2 Amplifying circuit |
| 08/22/1990 | EP0383193A2 Microwave integrated circuit |
| 08/22/1990 | CN1044881A Differential amplifier using voltage level shifting to achieve rail-to-rail input capability at very low power supply voltage |
| 08/21/1990 | US4951003 Differential transconductance circuit |
| 08/21/1990 | US4950929 Reducing resistive effects of an electrical switch |
| 08/21/1990 | US4950040 Measuring range selection switch |
| 08/21/1990 | CA1273070A2 High speed data bus structure and system |
| 08/16/1990 | EP0382695A2 Transmitter arrangement for digitally modulated signals |
| 08/16/1990 | EP0382373A2 Nonlinear noninverting transimpedance amplifier |
| 08/16/1990 | EP0382302A2 Differential amplifier using voltage level shifting to achieve rail-to-rail input capability at very low power supply voltage |
| 08/14/1990 | US4949050 RF power amplifier system having amplifier protection |
| 08/14/1990 | US4949049 Biasing network for integrated pairs of amplifiers internally commutable from a single-ended to a balanced configuration and viceversa |
| 08/14/1990 | US4949048 Pulse width modulation amplifier circuit |
| 08/14/1990 | US4948992 Static method to negate offset voltages in CMOS operational amplifiers |
| 08/08/1990 | EP0380976A1 Differential amplifier |
| 08/08/1990 | EP0380703A1 Wide-band amplifier |
| 08/08/1990 | CN1044554A 晶体管电路 Transistor circuit |
| 08/07/1990 | US4947455 RF power supply for supplying a regulated power amplified unmodulated drive signal to an RF modulator |
| 08/07/1990 | US4947220 Field Effect Transistor device |
| 08/07/1990 | US4947136 Variable gain distributed amplifier |
| 08/07/1990 | US4947135 Single-ended chopper stabilized operational amplifier |
| 08/07/1990 | US4947103 Current mirror have large current scaling factor |
| 08/01/1990 | EP0380152A1 Transistor circuit |
| 08/01/1990 | EP0379984A2 Feed forward Darlington circuit with reduced NPN reverse beta sensitivity |
| 08/01/1990 | EP0379671A2 Noise reduction for photodiode arrays |
| 08/01/1990 | CN1009044B High-efficiency class-a audio power amplifier |
| 07/31/1990 | US4945259 Bias voltage generator and method |
| 07/26/1990 | DE3938510A1 Antenna auxiliary amplifier circuit for antenna diversityreception |
| 07/26/1990 | DE3908765C1 Circuit for forming current differences and the use of this circuit |