JPS4991568A - - Google Patents
Info
- Publication number
- JPS4991568A JPS4991568A JP48002946A JP294673A JPS4991568A JP S4991568 A JPS4991568 A JP S4991568A JP 48002946 A JP48002946 A JP 48002946A JP 294673 A JP294673 A JP 294673A JP S4991568 A JPS4991568 A JP S4991568A
- Authority
- JP
- Japan
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
- H03F3/3069—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output
- H03F3/3071—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output with asymmetrical driving of the end stage
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/06187—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code with magnetically detectable marking
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/08—Methods or arrangements for sensing record carriers, e.g. for reading patterns by means detecting the change of an electrostatic or magnetic field, e.g. by detecting change of capacitance between electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/307—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in push-pull amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/52—Circuit arrangements for protecting such amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
- H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/30—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor
- H03F3/3069—Single-ended push-pull [SEPP] amplifiers; Phase-splitters therefor the emitters of complementary power transistors being connected to the output
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F2200/00—Indexing scheme relating to amplifiers
- H03F2200/27—A biasing circuit node being switched in an amplifier circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Artificial Intelligence (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Amplifiers (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
- Recording Or Reproducing By Magnetic Means (AREA)
Priority Applications (8)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP732946A JPS5422859B2 (US06294698-20010925-C00026.png) | 1972-12-30 | 1972-12-30 | |
| JP48002945A JPS4991567A (US06294698-20010925-C00026.png) | 1972-12-30 | 1972-12-30 | |
| FR7347078A FR2212691B1 (US06294698-20010925-C00026.png) | 1972-12-30 | 1973-12-28 | |
| GB6023973A GB1451090A (en) | 1972-12-30 | 1973-12-31 | Audio power amplifier |
| DE19732365289 DE2365289B2 (de) | 1972-12-30 | 1973-12-31 | Audio-leistungsverstaerker |
| DE2365282A DE2365282C3 (de) | 1972-12-30 | 1973-12-31 | Verfahren zur Darstellung von Informationen auf einer Magnetspur von kartenförmigen Datenträgern |
| NL7400009.A NL161316C (nl) | 1972-12-30 | 1974-01-02 | Krachtversterker. |
| US05/699,609 US4087761A (en) | 1972-12-30 | 1976-06-24 | Audio power amplifier |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP732946A JPS5422859B2 (US06294698-20010925-C00026.png) | 1972-12-30 | 1972-12-30 | |
| JP48002945A JPS4991567A (US06294698-20010925-C00026.png) | 1972-12-30 | 1972-12-30 | |
| DE2365282A DE2365282C3 (de) | 1972-12-30 | 1973-12-31 | Verfahren zur Darstellung von Informationen auf einer Magnetspur von kartenförmigen Datenträgern |
| US42970374A | 1974-01-02 | 1974-01-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS4991568A true JPS4991568A (US06294698-20010925-C00026.png) | 1974-09-02 |
| JPS5422859B2 JPS5422859B2 (US06294698-20010925-C00026.png) | 1979-08-09 |
Family
ID=27431784
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48002945A Pending JPS4991567A (US06294698-20010925-C00026.png) | 1972-12-30 | 1972-12-30 | |
| JP732946A Expired JPS5422859B2 (US06294698-20010925-C00026.png) | 1972-12-30 | 1972-12-30 |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP48002945A Pending JPS4991567A (US06294698-20010925-C00026.png) | 1972-12-30 | 1972-12-30 |
Country Status (6)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213758U (US06294698-20010925-C00026.png) * | 1975-07-16 | 1977-01-31 |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5756245B2 (US06294698-20010925-C00026.png) * | 1974-12-04 | 1982-11-29 | ||
| JPS5827536Y2 (ja) * | 1976-06-21 | 1983-06-15 | 三菱電機株式会社 | 電力増幅器 |
| DE2930606A1 (de) * | 1979-07-27 | 1981-01-29 | Dittel Walter Gmbh | Simplex-sende-empfangsgeraet |
| JPS5665511A (en) * | 1979-11-01 | 1981-06-03 | Sharp Corp | Indicating circuit for state of a-class and b-class amplifying operation of power amplifier |
| JPS56156005A (en) * | 1980-05-02 | 1981-12-02 | Rohm Co Ltd | Electric power amplifier |
| US4401950A (en) * | 1980-12-05 | 1983-08-30 | Motorola, Inc. | Low-voltage, complementary symmetry class B amplifier arrangement |
| US4593251A (en) * | 1981-06-29 | 1986-06-03 | Smith Randall C | Power amplifier capable of simultaneous operation in two classes |
| US4532476A (en) * | 1981-06-29 | 1985-07-30 | Smith Randall C | Power amplifier capable of simultaneous operation in two classes |
| JPS59200510A (ja) * | 1983-04-26 | 1984-11-13 | Citizen Watch Co Ltd | 低消費電力増巾器 |
| DE3744112A1 (de) * | 1987-12-01 | 1989-06-15 | Carl Spitzenberger | Verstaerkeranordnung |
| GB2227137B (en) * | 1988-12-10 | 1993-02-10 | Motorola Inc | Amplifier output stage |
| FI86013C (fi) * | 1989-03-29 | 1992-06-25 | Nokia Mobira Oy | Foerfarande foer omvandling av en operationsklass av en saendare. |
| US5055797A (en) * | 1989-04-03 | 1991-10-08 | Chater William T | Bias control for power amplifiers |
| US5281925A (en) * | 1992-11-17 | 1994-01-25 | Acrodyne Industries, Inc. | RF amplifier providing reduced drive response rise times and fall times |
| US5570062A (en) * | 1994-10-12 | 1996-10-29 | Ericsson Ge Mobile Communications Inc. | AM-FM transmitter power amplifier using class-BC |
| FR2836306B1 (fr) * | 2002-02-15 | 2004-07-16 | St Microelectronics Sa | Transconducteur a-ab |
| US8624678B2 (en) | 2010-12-05 | 2014-01-07 | Rf Micro Devices (Cayman Islands), Ltd. | Output stage of a power amplifier having a switched-bulk biasing and adaptive biasing |
| GB2410142A (en) * | 2004-01-13 | 2005-07-20 | Gordon Leslie Scott | An audio power amplifier with automatic class selection |
| US7053714B1 (en) | 2005-10-12 | 2006-05-30 | Peavey Electronics Corporation | Methods and apparatus for switching between class A and A/B operation in a power amplifier |
| US20100183166A1 (en) * | 2009-01-20 | 2010-07-22 | Simon Shan Lin Sun | External car amplifier capable of producing high power |
| US8629725B2 (en) | 2010-12-05 | 2014-01-14 | Rf Micro Devices (Cayman Islands), Ltd. | Power amplifier having a nonlinear output capacitance equalization |
| US8766724B2 (en) | 2010-12-05 | 2014-07-01 | Rf Micro Devices (Cayman Islands), Ltd. | Apparatus and method for sensing and converting radio frequency to direct current |
| US8604873B2 (en) | 2010-12-05 | 2013-12-10 | Rf Micro Devices (Cayman Islands), Ltd. | Ground partitioned power amplifier for stable operation |
| US8843083B2 (en) | 2012-07-09 | 2014-09-23 | Rf Micro Devices (Cayman Islands), Ltd. | CMOS switching circuitry of a transmitter module |
| US8731490B2 (en) | 2012-07-27 | 2014-05-20 | Rf Micro Devices (Cayman Islands), Ltd. | Methods and circuits for detuning a filter and matching network at the output of a power amplifier |
| US11387787B2 (en) * | 2017-04-28 | 2022-07-12 | Burmester Audiosysteme Gmbh | Signal amplifier circuit, voltage converter and system |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB466831A (en) * | 1935-02-09 | 1937-06-07 | British Thomson Houston Co Ltd | Improvements in and relating to the control of thermionic devices |
| US2812393A (en) * | 1954-10-06 | 1957-11-05 | Zenith Radio Corp | Power supply and bias arrangement for push-pull transistor amplifier |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2259121A (en) * | 1939-09-20 | 1941-10-14 | Lemuel M Temple | Radio receiver circuit |
| US2963656A (en) * | 1959-05-26 | 1960-12-06 | Burroughs Corp | Temperature stable transistor amplifier |
| JPS5017664Y2 (US06294698-20010925-C00026.png) * | 1971-03-31 | 1975-05-30 | ||
| US3787777A (en) * | 1971-11-19 | 1974-01-22 | Beltone Electronics Corp | Electric amplifier |
-
1972
- 1972-12-30 JP JP48002945A patent/JPS4991567A/ja active Pending
- 1972-12-30 JP JP732946A patent/JPS5422859B2/ja not_active Expired
-
1973
- 1973-12-28 FR FR7347078A patent/FR2212691B1/fr not_active Expired
- 1973-12-31 DE DE19732365289 patent/DE2365289B2/de not_active Ceased
- 1973-12-31 GB GB6023973A patent/GB1451090A/en not_active Expired
- 1973-12-31 DE DE2365282A patent/DE2365282C3/de not_active Expired
-
1974
- 1974-01-02 NL NL7400009.A patent/NL161316C/xx not_active IP Right Cessation
-
1976
- 1976-06-24 US US05/699,609 patent/US4087761A/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB466831A (en) * | 1935-02-09 | 1937-06-07 | British Thomson Houston Co Ltd | Improvements in and relating to the control of thermionic devices |
| US2812393A (en) * | 1954-10-06 | 1957-11-05 | Zenith Radio Corp | Power supply and bias arrangement for push-pull transistor amplifier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5213758U (US06294698-20010925-C00026.png) * | 1975-07-16 | 1977-01-31 |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2365289B2 (de) | 1976-02-26 |
| DE2365282C3 (de) | 1978-11-30 |
| US4087761A (en) | 1978-05-02 |
| DE2365282B2 (de) | 1978-03-30 |
| DE2365289A1 (de) | 1974-07-04 |
| FR2212691B1 (US06294698-20010925-C00026.png) | 1978-03-24 |
| NL161316B (nl) | 1979-08-15 |
| GB1451090A (en) | 1976-09-29 |
| DE2365282A1 (de) | 1975-07-03 |
| FR2212691A1 (US06294698-20010925-C00026.png) | 1974-07-26 |
| JPS4991567A (US06294698-20010925-C00026.png) | 1974-09-02 |
| NL161316C (nl) | 1979-08-15 |
| JPS5422859B2 (US06294698-20010925-C00026.png) | 1979-08-09 |
| NL7400009A (US06294698-20010925-C00026.png) | 1974-07-02 |
