| Patents for H03F 3 - Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements (44,008) |
|---|
| 12/14/1993 | US5270668 Semiconductor amplifier |
| 12/14/1993 | CA1325256C Recirculating delay line radar performance monitor |
| 12/09/1993 | WO1993024993A1 Instrumentation amplifier |
| 12/08/1993 | EP0573359A1 Treatment and precorrection device of an audio frequency signal before its amplification in an amplifier chain of an amplitude modulated emitter |
| 12/08/1993 | EP0572974A1 Harmonic distortion compensation circuit |
| 12/08/1993 | EP0572691A1 Semi-redundant type power amplifier for operation in one or more channels |
| 12/08/1993 | CN1079345A Capacitor coupled isolted amplifier |
| 12/07/1993 | US5268650 Amplifier circuit with bipolar and field-effect transistors |
| 12/06/1993 | CA2097555A1 Device for the processing and pre-correction of an audio signal before it is amplified in an amplification system of a transmitter with amplitude modulation |
| 12/01/1993 | EP0571512A1 Gain linearity correction circuit for mos circuits |
| 11/30/1993 | US5266905 Audio amplifier with amplified feedback |
| 11/30/1993 | US5266852 Filter circuit for integrated circuit |
| 11/30/1993 | US5266826 Semiconductor integrated circuit |
| 11/30/1993 | US5266793 Fail-safe photoamplifier circuit with a safety light curtain system |
| 11/25/1993 | WO1993023922A1 Local area network amplifier for twisted pair lines |
| 11/25/1993 | WO1993023876A1 Current mirror with at least one pnp transistor |
| 11/25/1993 | WO1993023798A1 Zero-voltage complementary switching high efficiency class d amplifier |
| 11/25/1993 | DE4216918A1 LF-power amplifier arrangement for car radio - has window comparator switching power amplifier to digital mode when LF-signal level is between two threshold values |
| 11/25/1993 | DE4216684A1 Stromspiegel mit wenigstens einem pnp-Transistor Current mirror with at least one pnp transistor |
| 11/25/1993 | CA2136085A1 Zero-voltage complementary switching high efficiency class d amplifier |
| 11/24/1993 | EP0571302A1 Amplifier with limited output current |
| 11/24/1993 | EP0571075A2 Analog to digital converter with autoranging offset |
| 11/24/1993 | EP0570820A2 Switchable current source circuit and the use of such a circuit in a phase detector |
| 11/24/1993 | EP0570584A1 Semiconductor device |
| 11/24/1993 | EP0570491A1 High power switch-mode radio frequency amplifier method and apparatus. |
| 11/23/1993 | US5264807 High frequency power amplifier with high efficiency and low distortion |
| 11/23/1993 | US5264804 Lowpass filter with improved D.C. offset performance |
| 11/23/1993 | US5264803 Amplifier circuit with increased voltage handling capacity |
| 11/18/1993 | EP0570011A1 Operational amplifier with common-mode feedback amplifier circuit |
| 11/16/1993 | US5262787 Recirculating delay line radar performance monitor |
| 11/16/1993 | US5262735 Ring oscillator having outputs that are selectively combined to produce different frequencies |
| 11/16/1993 | US5262733 Pulse-width modulation amplifier |
| 11/16/1993 | US5262665 Semiconductor device with current sensing function |
| 11/16/1993 | CA2017904C High frequency amplifier circuit capable of optimizing a total power consumption |
| 11/11/1993 | WO1993022830A1 Dc feedback circuit using sample and hold circuits |
| 11/10/1993 | EP0569165A2 Power supply circuit |
| 11/10/1993 | EP0569102A2 Differential amplifier having rail-to-rail input capability and square-root current control |
| 11/10/1993 | EP0568880A1 Preamplifier for optical communication having a gain control circuit |
| 11/09/1993 | US5260672 Voltage follower circuit |
| 11/09/1993 | CA2033302C Amplifier circuit with correction of amplitude and phase distortions |
| 11/03/1993 | EP0568198A2 Integrated circuit for physiological signal measurement |
| 11/03/1993 | EP0568197A2 Biomedical amplifier circuit |
| 11/03/1993 | EP0514381B1 Frequency response-compensated circuit |
| 11/02/1993 | US5258723 Integrated instrumentation amplifier with integrated frequency-compensating capacitance |
| 11/02/1993 | US5258715 Circuit arrangement for selectively amplifying signals |
| 11/02/1993 | US5258664 Operational amplifier with self contained sample and hold and auto zero |
| 11/02/1993 | CA1323910C Mos analog nor amplifier |
| 10/27/1993 | EP0567380A1 Method and device for compensation of phase instabilities of a wave amplified by a microwave tube |
| 10/27/1993 | EP0566990A2 Single-ended and differential transistor amplifier circuits with full signal modulation compensation techniques which are technology independent |
| 10/26/1993 | US5257285 Transimpedance pre-amplifier and a receiver including the pre-amplifier |
| 10/26/1993 | US5257146 Magnetic head swing clamp and cross-talk eliminator for read/write preamplifier |
| 10/26/1993 | US5256988 Conical transverse electromagnetic divider/combiner |
| 10/26/1993 | US5256987 Power amplifier device having a plurality of power amplifier units connected in parallel |
| 10/26/1993 | US5256986 Circuit arrangement for amplifying weak sensor currents |
| 10/26/1993 | US5256984 Amplifier for controlling linear gain of wide band using external bias |
| 10/26/1993 | US5256983 Wide band amplifier |
| 10/25/1993 | CA2094355A1 Method and device for compensating phase jitter in waves amplified by a microwave tube |
| 10/21/1993 | DE4212934A1 Optical signal receiver circuit - has collector emitter of bipolar transistor connected in parallel with trans-impedance amplifier coupling resistance |
| 10/19/1993 | US5255322 Multi-zone audio distribution amplifier |
| 10/19/1993 | US5254957 Apparatus and method for amplifying optically sensed signals |
| 10/19/1993 | US5254956 Composite differential amplifier |
| 10/19/1993 | US5254889 MOSFET analog multiplier |
| 10/19/1993 | US5254851 Wide-dynamic range light receiver |
| 10/14/1993 | DE4224582C1 Audio amplifier circuit using operational amplifiers - has capacitors coupling outputs of subtractor and inverter amplifier to inputs of opposite amplifier to provide symmetrical characteristic |
| 10/13/1993 | EP0565053A1 Solid state microwave power amplifier module |
| 10/13/1993 | EP0564983A1 Micropower amplifier/transducer driver with signal expansion |
| 10/13/1993 | EP0564490A1 Improved switching amplifier |
| 10/12/1993 | US5252931 Wide band frequency amplifiers |
| 10/12/1993 | US5252928 Charge amplifier circuit |
| 10/12/1993 | US5252820 Photoelectric conversion circuit having a tuning circuit and changeover switcher |
| 10/08/1993 | CA2088624A1 Solid state microwave power amplifier module |
| 10/06/1993 | EP0564341A1 Video amplifier with gain and alignment control |
| 10/06/1993 | EP0564225A2 Voltage generation circuits and methods |
| 10/06/1993 | EP0563776A2 Signal detecting circuit apparatus |
| 10/06/1993 | EP0563421A1 Circuit arrangement with a switch amplifier |
| 10/06/1993 | EP0563155A1 Digital-to-analogue conversion |
| 10/06/1993 | EP0563125A1 Dynamically biased amplifier |
| 10/06/1993 | CN1022364C Dynamic offset amplifier |
| 10/05/1993 | US5251331 High efficiency dual mode power amplifier apparatus |
| 10/05/1993 | US5251054 LAN electro-optical interface |
| 10/05/1993 | US5250912 RF power amplifier |
| 10/05/1993 | US5250911 Single-ended and differential transistor amplifier circuits with full signal modulation compensation techniques which are technology independent |
| 10/01/1993 | CA2092882A1 Circuit arrangement having a switching amplifier |
| 09/30/1993 | WO1993019539A1 Optical receiver |
| 09/30/1993 | WO1993019522A1 Coupling circuit |
| 09/30/1993 | WO1993019517A1 Resonant circuit and multiple resonator circuits constructed therefrom |
| 09/30/1993 | DE4308518A1 Combined bipolar transistor and MOSFET amplifier for ECL-CMOS level shifting circuit - uses two bipolar transistors with series MOSFETs between two opposing potentials providing amplifier inputs and outputs |
| 09/30/1993 | CA2128894A1 Optical receiver |
| 09/29/1993 | EP0562658A1 Amplifier arrangement |
| 09/29/1993 | EP0376953B1 Electronic devices and signal comparator using same |
| 09/29/1993 | CN1076814A Wave-guide input-output type microstrip amplifier |
| 09/29/1993 | CN1022279C Ultra high gain direct coupling amplifying circuit |
| 09/28/1993 | US5248950 High frequency signal processing apparatus with biasing arrangement |
| 09/28/1993 | US5248946 Symmetrical differential amplifier circuit |
| 09/28/1993 | US5248945 Power amplifiers |
| 09/23/1993 | DE4304898A1 Differential amplifier, comparator, and high speed A/D converter - has two constant current sources for specified currents, and current rise control responding to analog signal |
| 09/23/1993 | DE4210463A1 Push=pull power amplifier for impedances with large reactance - uses first stage as control member for voltage-superimposing current source and second stage as control member for emitter follower |
| 09/22/1993 | EP0561469A2 Enhancement-depletion mode cascode current mirror |
| 09/22/1993 | EP0561346A1 Amplifier |
| 09/22/1993 | EP0561336A1 High-sensitivity, low-noise transistor amplifier |