Amplifiers with both discharge tubes and semiconductor devices as amplifying elements

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HELECTRICITY H03Electronic circuits H03FAMPLIFIERS

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H03F5/00Amplifiers with both discharge tubes and semiconductor devices as amplifying elements

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Patents Grantslast 30 patents

Information Patent Grant
Valve amplifiers
- Patent number 12,107,560
- Issue date Oct 1, 2024
- Blackstar Amplification Ltd.
- Paul James Stevens
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Bias circuit
- Patent number 10,248,149
- Issue date Apr 2, 2019
- Richwave Technology Corp.
- Chih-Sheng Chen
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Architecture of a wideband distributed amplification device
- Patent number 10,027,296
- Issue date Jul 17, 2018
- Thales
- Eva Maria Gonzalez Esteban
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Impedance converter and condenser microphone
- Patent number 9,893,691
- Issue date Feb 13, 2018
- Kabushiki Kaisha Audio Technica
- Hiroshi Akino
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Power amplifier and input signal adjusting method
- Patent number 9,680,432
- Issue date Jun 13, 2017
- Yamaha Corporation
- Yohei Otani
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Rectifier circuit for monitoring dc offset of a single-supply audio...
- Patent number 9,648,420
- Issue date May 9, 2017
- Panasonic Automotive Systems Company of America, division of Panasonic Corpor...
- Dallas Dwight Hickerson
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Guitar amplifier circuitry
- Patent number 9,620,097
- Issue date Apr 11, 2017
- BAD CAT HOLDINGS, LLC
- George Klimek
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Impedance converter circuit for condenser microphone
- Patent number 9,590,570
- Issue date Mar 7, 2017
- Kabushiki Kaisha Audio-Technica
- Hiroshi Akino
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electronic system of a hybrid amplifier
- Patent number 9,467,110
- Issue date Oct 11, 2016
- Piotr Nawrocki
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Electronic device and control method thereof
- Patent number 9,413,304
- Issue date Aug 9, 2016
- Samsung Electronics Co., Ltd.
- Jae-cheol Lee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Rectifier circuit for monitoring DC offset of a single-supply audio...
- Patent number 9,379,681
- Issue date Jun 28, 2016
- Panasonic Automotive Systems Company of America, division of Panasonic Corpor...
- Dallas Dwight Hickerson
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Lightweight amplifier
- Patent number 9,203,365
- Issue date Dec 1, 2015
- Michael B. Milbert
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method and apparatus for outputting audio signal
- Patent number 9,136,798
- Issue date Sep 15, 2015
- Samsung Electronics Co., Ltd.
- Won-hyung Moon
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Method of outputting audio signal and audio signal output apparatus...
- Patent number 9,124,226
- Issue date Sep 1, 2015
- Samsung Electronics Co., Ltd.
- Won-hyung Moon
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Sound output device using vacuum tube, audio apparatus and method f...
- Patent number 8,841,966
- Issue date Sep 23, 2014
- Samsung Electronics Co., Ltd.
- Jae-cheol Lee
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Audio frequency amplifier
- Patent number 8,026,765
- Issue date Sep 27, 2011
- Roberto Michele Giovannotto
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Controlling the performance of a thermionic tube
- Patent number 7,936,211
- Issue date May 3, 2011
- KBO Dynamics International Limited
- Colin Arrowsmith
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Output circuit of vacuum-tube amplifier
- Patent number 7,583,141
- Issue date Sep 1, 2009
- AVERD Labs Co., Ltd.
- Soung Whan Chung
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Expanded performance and functions for vacuum tube replacement devices
- Patent number 7,482,863
- Issue date Jan 27, 2009
- Roberts Retrovalve, Inc.
- Douglas H. Roberts
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Vacuum tube replacement device, circuit and system
- Patent number 7,408,401
- Issue date Aug 5, 2008
- Roberts Retrovalve, Inc.
- Douglas H. Roberts
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Tube input JFET output (TIJO) zero feedback audio amplifier
- Patent number 6,737,915
- Issue date May 18, 2004
- Stephen Arthur Harner
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Output signal converter for ampliciation or attenuation of tube amp...
- Patent number 6,229,387
- Issue date May 8, 2001
- KORG, Inc.
- Fumio Mieda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Output signal converter for tube amplifiers
- Patent number 6,175,271
- Issue date Jan 16, 2001
- Korg Inc.
- Fumio Mieda
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Vacuum tube audio amplifying circuit
- Patent number 5,912,585
- Issue date Jun 15, 1999
- Zanden Audio System Co., Ltd.
- Kazutoshi Yamada
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable control of electronic power supplies
- Patent number 5,909,145
- Issue date Jun 1, 1999
- Maven Peal Instruments, Inc.
- David G. Zimmerman
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Asymmetrical driver for asymmetrical loudspeakers
- Patent number 5,721,784
- Issue date Feb 24, 1998
- Carmelo F. Bernardo
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Grant
Hybrid solid state/vacuum tube audio amplifier
- Patent number 5,705,950
- Issue date Jan 6, 1998
- Brent K. Butler
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Variable control of electronic power supplies
- Patent number 5,635,872
- Issue date Jun 3, 1997
- Maven Peal Instruments, Inc.
- David G. Zimmerman
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Output transformerless amplifier impedance matching apparatus
- Patent number 5,612,646
- Issue date Mar 18, 1997
- David W. Berning
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Reflected plate amplifier
- Patent number 5,450,034
- Issue date Sep 12, 1995
- Aphex Systems, Ltd.
- Donn Werrbach
- H03 - BASIC ELECTRONIC CIRCUITRY

Patents Applicationslast 30 patents

Information Patent Application
VALVE AMPLIFIERS
- Publication number 20220385253
- Publication date Dec 1, 2022
- Blackstar Amplification Ltd.
- Paul James Stevens
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
BIAS CIRCUIT
- Publication number 20180275709
- Publication date Sep 27, 2018
- RICHWAVE TECHNOLOGY CORP.
- Chih-Sheng Chen
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
IMPEDANCE CONVERTER AND CONDENSER MICROPHONE
- Publication number 20170187342
- Publication date Jun 29, 2017
- KABUSHIKI KAISHA AUDIO-TECHNICA
- Hiroshi AKINO
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ARCHITECTURE OF A WIDEBAND DISTRIBUTED AMPLIFICATION DEVICE
- Publication number 20170104463
- Publication date Apr 13, 2017
- THALES
- Eva Maria GONZALEZ ESTEBAN
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
POWER AMPLIFIER AND INPUT SIGNAL ADJUSTING METHOD
- Publication number 20160268986
- Publication date Sep 15, 2016
- Yamaha Corporation
- Yohei OTANI
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
RECTIFIER CIRCUIT FOR MONITORING DC OFFSET OF A SINGLE-SUPPLY AUDIO...
- Publication number 20150271614
- Publication date Sep 24, 2015
- Panasonic Automotive Systems Company of America, Division of Panasonic Corpor...
- DALLAS DWIGHT HICKERSON
- H04 - ELECTRIC COMMUNICATION TECHNIQUE
Information Patent Application
ELECTRONIC DEVICE AND CONTROL METHOD THEREOF
- Publication number 20140176237
- Publication date Jun 26, 2014
- Samsung Electronics Co., Ltd.
- Jae-cheol LEE
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
METHOD AND APPARATUS FOR OUTPUTTING AUDIO SIGNAL
- Publication number 20130094673
- Publication date Apr 18, 2013
- Samsung Electronics Co., Ltd.
- Won-hyung MOON
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
SOUND OUTPUT DEVICE USING VACUUM TUBE, AUDIO APPARATUS AND METHOD F...
- Publication number 20130027131
- Publication date Jan 31, 2013
- Samsung Electronics Co., Ltd.
- Jae-cheol LEE
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
METHOD OF OUTPUTTING AUDIO SIGNAL AND AUDIO SIGNAL OUTPUT APPARATUS...
- Publication number 20120195441
- Publication date Aug 2, 2012
- Samsung Electronics Co., Ltd.
- Won-hyung MOON
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Controlling the Performance of a Thermionic tube
- Publication number 20110199155
- Publication date Aug 18, 2011
- Colin Arowsmith
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
AUDIO FREQUENCY AMPLIFIER
- Publication number 20100259328
- Publication date Oct 14, 2010
- Roberto Michele Giovannotto
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Controlling the performance of a thermionic tube
- Publication number 20100033245
- Publication date Feb 11, 2010
- Colin Arrowsmith
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
OUTPUT CIRCUIT OF VACUUM-TUBE AMPLIFIER
- Publication number 20090224826
- Publication date Sep 10, 2009
- Soung Whan Chung
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
VACUUM TUBE REPLACEMENT DEVICE, CIRCUIT AND SYSTEM
- Publication number 20080204131
- Publication date Aug 28, 2008
- Douglas H. Roberts
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Expanded Performance and Functions for Vacuum Tube Replacement Devices
- Publication number 20070285156
- Publication date Dec 13, 2007
- Roberts Retrovalve, Inc.
- Douglas H. Roberts
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
TUBE INPUT JFET OUTPUT (TIJO) ZERO FEEDBACK AUDIO AMPLIFIER
- Publication number 20040090263
- Publication date May 13, 2004
- Stephen Arthur Harner
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Application
Audio expander
- Publication number 20020126861
- Publication date Sep 12, 2002
- Chester Colby
- H03 - BASIC ELECTRONIC CIRCUITRY

Amplifiers with both discharge tubes and semiconductor devices as amplifying elements

Industry

Parent Industries

Current Industry

Patents Grantslast 30 patents

Valve amplifiers

Bias circuit

Architecture of a wideband distributed amplification device

Impedance converter and condenser microphone

Power amplifier and input signal adjusting method

Rectifier circuit for monitoring dc offset of a single-supply audio...

Guitar amplifier circuitry

Impedance converter circuit for condenser microphone

Electronic system of a hybrid amplifier

Electronic device and control method thereof

Rectifier circuit for monitoring DC offset of a single-supply audio...

Lightweight amplifier

Method and apparatus for outputting audio signal

Method of outputting audio signal and audio signal output apparatus...

Sound output device using vacuum tube, audio apparatus and method f...

Audio frequency amplifier

Controlling the performance of a thermionic tube

Output circuit of vacuum-tube amplifier

Expanded performance and functions for vacuum tube replacement devices

Vacuum tube replacement device, circuit and system

Tube input JFET output (TIJO) zero feedback audio amplifier

Output signal converter for ampliciation or attenuation of tube amp...

Output signal converter for tube amplifiers

Vacuum tube audio amplifying circuit

Variable control of electronic power supplies

Asymmetrical driver for asymmetrical loudspeakers

Hybrid solid state/vacuum tube audio amplifier

Variable control of electronic power supplies

Output transformerless amplifier impedance matching apparatus

Reflected plate amplifier

Patents Applicationslast 30 patents

VALVE AMPLIFIERS

BIAS CIRCUIT

IMPEDANCE CONVERTER AND CONDENSER MICROPHONE

ARCHITECTURE OF A WIDEBAND DISTRIBUTED AMPLIFICATION DEVICE

POWER AMPLIFIER AND INPUT SIGNAL ADJUSTING METHOD

RECTIFIER CIRCUIT FOR MONITORING DC OFFSET OF A SINGLE-SUPPLY AUDIO...

ELECTRONIC DEVICE AND CONTROL METHOD THEREOF

METHOD AND APPARATUS FOR OUTPUTTING AUDIO SIGNAL

SOUND OUTPUT DEVICE USING VACUUM TUBE, AUDIO APPARATUS AND METHOD F...

METHOD OF OUTPUTTING AUDIO SIGNAL AND AUDIO SIGNAL OUTPUT APPARATUS...

Controlling the Performance of a Thermionic tube

AUDIO FREQUENCY AMPLIFIER

Controlling the performance of a thermionic tube

OUTPUT CIRCUIT OF VACUUM-TUBE AMPLIFIER

VACUUM TUBE REPLACEMENT DEVICE, CIRCUIT AND SYSTEM

Expanded Performance and Functions for Vacuum Tube Replacement Devices

TUBE INPUT JFET OUTPUT (TIJO) ZERO FEEDBACK AUDIO AMPLIFIER

Audio expander