| Patents for H03F 1 - Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements (30,272) |
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| 08/28/1985 | EP0153250A1 Integrated amplifier with a CMOS output stage |
| 08/28/1985 | EP0152805A2 Semiconductor device |
| 08/28/1985 | EP0152581A1 Amplifier in which the stages are dc-coupled |
| 08/27/1985 | US4538198 Protection circuit for an output transistor |
| 08/27/1985 | US4538117 Transistor amplifier |
| 08/27/1985 | US4538116 Output stage for an operational amplifier |
| 08/27/1985 | US4538114 Differential amplifier |
| 08/27/1985 | US4538102 Power supply circuit |
| 08/21/1985 | EP0152151A1 Broadband control amplifier |
| 08/21/1985 | EP0151803A2 Circuit arrangement for adapting an amplifier with an inductance in the emitter circuit to a filter with an input inductance |
| 08/20/1985 | US4536717 Compensated inverting/noninverting differential amplifier |
| 08/20/1985 | CA1192312A1 Single-supply ic digital-to-analog converter for use with microprocessors |
| 08/20/1985 | CA1192276A1 Lc delay line for feedforward amplifier |
| 08/20/1985 | CA1192274A1 Current amplifier |
| 08/13/1985 | US4535304 High frequency amplifier with phase compensation |
| 08/13/1985 | US4535303 Driver circuit |
| 08/13/1985 | US4535276 Output circuit and brushless motor using the same |
| 08/13/1985 | CA1191909A1 Amplifier circuit |
| 08/07/1985 | EP0151080A2 Level transposition circuit for high definition video image generation |
| 08/07/1985 | EP0150606A1 Comparator circuit |
| 08/06/1985 | US4533876 Differential operational amplifier with common mode feedback |
| 07/31/1985 | EP0150140A2 Polarisation circuit of a field-effect transistor |
| 07/31/1985 | EP0149951A2 Method and apparatus for seismic detection |
| 07/30/1985 | US4532482 Circuit for preventing malfunction of muting amplifier |
| 07/30/1985 | US4532478 Phase adjusted feedforward system utilizing a single amplitude/phase equalizer |
| 07/30/1985 | US4532477 Distortion compensation for a microwave amplifier |
| 07/30/1985 | CA1191215A1 Active predistorter for linearity compensation |
| 07/30/1985 | CA1191213A1 Transistor circuit including biassing circuit |
| 07/24/1985 | EP0149319A2 High frequency circuit |
| 07/23/1985 | US4531173 Protective power foldback circuit for a power semiconductor |
| 07/23/1985 | US4531100 Amplifier suitable for low supply voltage operation |
| 07/23/1985 | US4531099 Amplifier |
| 07/23/1985 | US4531098 Wide dynamic range amplifier with second harmonic signal cancellation |
| 07/17/1985 | EP0148771A2 Capacitance proximity sensor |
| 07/17/1985 | EP0148685A2 Direct current differential amplifier arrangement, especially for the measurement of slowly varying weak voltages |
| 07/17/1985 | EP0148563A1 Wide-band direct-coupled transistor amplifiers |
| 07/17/1985 | EP0148249A1 Circuit with adjustable amplitude and rolloff frequency characteristics |
| 07/16/1985 | US4530026 Output transistor protection circuit in a power amplifier with collector power dissipation limitation |
| 07/16/1985 | US4529965 Switched-capacitor circuit analog-to-digital converter |
| 07/16/1985 | US4529946 Differential amplifier circuit |
| 07/16/1985 | US4529945 Method of removing distortions in amplifiers |
| 07/16/1985 | CA1190664A1 Borehole spectral analog to digital converter |
| 07/16/1985 | CA1190607A1 Signal cuber |
| 07/09/1985 | US4528520 Wide band high output amplifier using a power field effect transistor as an output stage |
| 07/09/1985 | US4528518 Chain amplifier |
| 07/09/1985 | US4528517 Overdrive thermal distortion compensation for a Quinn cascomp amplifier |
| 07/09/1985 | US4528516 Differential amplifier with dynamic thermal balancing |
| 07/09/1985 | US4528515 High frequency differential amplifier with adjustable damping factor |
| 07/03/1985 | EP0147306A2 Linear power amplifier |
| 07/03/1985 | EP0147230A2 Subscriber line interface circuit having an impedance synthesizer |
| 07/02/1985 | US4527128 Bistate linear amplifier circuit |
| 07/02/1985 | CA1189920A1 Multiple amplifier interconnection for optimal sensitivity |
| 07/02/1985 | CA1189919A1 Stabilized high efficiency radio frequency amplifier |
| 06/25/1985 | US4525681 Narrow-band amplifier, more specifically television intermediate frequency amplifier |
| 06/25/1985 | US4525636 Variable electronic impedance circuit |
| 06/19/1985 | EP0145313A1 Bootstrap power regulator for systems such as analog to digital converters |
| 06/19/1985 | EP0144647A1 Differential amplifier |
| 06/18/1985 | US4524331 High input impedance amplifier circuit |
| 06/18/1985 | US4524329 Operational amplifier circuit |
| 06/18/1985 | US4524327 Operational amplifier |
| 06/11/1985 | US4523154 Enhanced-accuracy semiconductor power amplifier |
| 06/11/1985 | US4523152 High-efficiency feedforward-error-correction amplifier |
| 06/05/1985 | EP0143375A2 Transformerless push-pull amplifier |
| 06/04/1985 | US4521742 Amplifier power supply with large dynamic headroom |
| 06/04/1985 | US4521741 For a capacitive voltage source |
| 06/04/1985 | US4521740 Bias current compensated amplifier |
| 06/04/1985 | US4521739 Low offset voltage transistor bridge transconductance amplifier |
| 05/28/1985 | US4520324 MOS Gain controlled amplifier |
| 05/28/1985 | US4520323 Emitter follower type SEPP circuit |
| 05/28/1985 | US4520322 Power amplifier having improved power supply circuit |
| 05/28/1985 | CA1187950A1 Monolithic programmable gain-integrator stage |
| 05/28/1985 | CA1187949A1 Negative feedback amplifiers including directional couplers |
| 05/23/1985 | WO1985002304A1 Bias circuit for dynamically switchable low drop current source |
| 05/22/1985 | EP0142177A1 Transistor protection circuit |
| 05/21/1985 | US4518928 Power supply circuit for amplifier |
| 05/21/1985 | US4518926 Gate-coupled field-effect transistor pair amplifier |
| 05/21/1985 | US4518923 Preamplifier |
| 05/21/1985 | CA1187566A1 Mos power-on reset circuit |
| 05/15/1985 | EP0141715A2 Automatic precorrection device of non-linearities in a power amplifier circuit, and its application to a television transmitter |
| 05/14/1985 | US4517528 Amplifier circuit driven by ground isolated power supply |
| 05/14/1985 | US4517525 Balancing compensation in differential amplifiers with a single-ended drive |
| 05/14/1985 | US4517524 High frequency operational amplifier |
| 05/14/1985 | US4517521 Feed forward circuit and a method for aligning and balancing the same |
| 05/14/1985 | CA1187146A1 Protection circuit |
| 05/14/1985 | CA1187144A1 Differential amplifier with auto bias adjust |
| 05/14/1985 | CA1187136A1 Bias generator |
| 05/09/1985 | WO1985002072A1 High efficiency igfet operational amplifier |
| 05/08/1985 | EP0140677A2 Differential amplifier using a constant-current source circuit |
| 05/07/1985 | US4516082 Amplifier circuit for minimizing output voltage power-up transients |
| 05/07/1985 | US4516080 High-efficiency low distortion parallel amplifier |
| 05/02/1985 | EP0138901A1 Stabilized microwave power amplifier system. |
| 04/30/1985 | US4514700 Output amplifier for a transmitting tube |
| 04/30/1985 | US4514646 Semiconductor integrated circuit device including a protective resistor arrangement for output transistors |
| 04/30/1985 | CA1186385A1 Amplifier comprising means for eliminating direct voltage transients on the amplifier output |
| 04/24/1985 | EP0138261A2 Differential operational amplifier with common mode feedback |
| 04/24/1985 | EP0138260A2 Gain amplifier |
| 04/23/1985 | US4513251 Miller compensation for an operational amplifier |
| 04/23/1985 | US4513250 Signal cuber |
| 04/17/1985 | EP0137620A2 Improvements in or relating to integrated circuits |
| 04/16/1985 | US4512008 Small signal amplifying circuit for a pickup cartridge |