JPS54114162A - Electric amplifier - Google Patents
Electric amplifierInfo
- Publication number
- JPS54114162A JPS54114162A JP1414279A JP1414279A JPS54114162A JP S54114162 A JPS54114162 A JP S54114162A JP 1414279 A JP1414279 A JP 1414279A JP 1414279 A JP1414279 A JP 1414279A JP S54114162 A JPS54114162 A JP S54114162A
- Authority
- JP
- Japan
- Prior art keywords
- electric amplifier
- amplifier
- electric
- Prior art date
- 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.)
- Pending
Links
Classifications
-
- 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
- H03F3/211—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only using a combination of several 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0211—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers with control of the supply voltage or current
- H03F1/0244—Stepped control
-
- 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
- H03F1/02—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation
- H03F1/0205—Modifications of amplifiers to raise the efficiency, e.g. gliding Class A stages, use of an auxiliary oscillation in transistor amplifiers
- H03F1/0277—Selecting one or more amplifiers from a plurality of amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/34—Muting amplifier when no signal is present or when only weak signals are present, or caused by the presence of noise signals, e.g. squelch systems
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE7801377A SE412670B (sv) | 1978-02-07 | 1978-02-07 | Elektrisk forsterkare |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54114162A true JPS54114162A (en) | 1979-09-06 |
Family
ID=20333886
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1414279A Pending JPS54114162A (en) | 1978-02-07 | 1979-02-07 | Electric amplifier |
Country Status (5)
Country | Link |
---|---|
US (1) | US4262262A (ja) |
JP (1) | JPS54114162A (ja) |
DE (1) | DE2904231A1 (ja) |
NL (1) | NL7900731A (ja) |
SE (1) | SE412670B (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2515359B1 (fr) * | 1981-10-23 | 1985-07-05 | Lmt Radio Professionelle | Emetteur de puissance hyperfrequence a transistors a effet de champ, notamment pour radar doppler |
KR950007836B1 (ko) * | 1990-11-27 | 1995-07-20 | 삼성전자주식회사 | 시모스 파워 증폭기 |
DE4224111C1 (de) * | 1992-07-22 | 1994-02-24 | Vdo Luftfahrtgeraete Werk Gmbh | Schaltungsanordnung zur Reduzierung des Energieverbrauches an einem analogen Verstärker |
US5570062A (en) * | 1994-10-12 | 1996-10-29 | Ericsson Ge Mobile Communications Inc. | AM-FM transmitter power amplifier using class-BC |
US6028486A (en) * | 1997-10-07 | 2000-02-22 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for reducing power dissipation in multi-carrier amplifiers |
US6028485A (en) * | 1998-08-03 | 2000-02-22 | Motorola, Inc. | Power amplification apparatus and method therefor |
JP2003017951A (ja) * | 2001-06-29 | 2003-01-17 | Harada Ind Co Ltd | Fmアンテナ用増幅器 |
DE102007026930B4 (de) * | 2007-06-12 | 2009-04-16 | Universität des Saarlandes Campus Saarbrücken | Endstufensystem |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3579136A (en) * | 1965-12-13 | 1971-05-18 | George A Machamer | Multi-stage power amplifier in which each stage conducts for only a predetermined portion of the input |
US3497820A (en) * | 1966-12-27 | 1970-02-24 | Tideland Signal Corp | Two-stage power amplifier connected to autotransformer |
US3832643A (en) * | 1972-09-21 | 1974-08-27 | Raytheon Co | Minimal dissipation power controller |
US4117418A (en) * | 1977-01-14 | 1978-09-26 | Lennart Harry Erik Hoglund | Electric amplifier |
-
1978
- 1978-02-07 SE SE7801377A patent/SE412670B/sv unknown
-
1979
- 1979-01-30 NL NL7900731A patent/NL7900731A/xx not_active Application Discontinuation
- 1979-01-31 US US06/008,188 patent/US4262262A/en not_active Expired - Lifetime
- 1979-02-05 DE DE19792904231 patent/DE2904231A1/de not_active Withdrawn
- 1979-02-07 JP JP1414279A patent/JPS54114162A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US4262262A (en) | 1981-04-14 |
DE2904231A1 (de) | 1979-08-09 |
SE412670B (sv) | 1980-03-10 |
NL7900731A (nl) | 1979-08-09 |
SE7801377L (sv) | 1979-08-08 |
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