JPS6251813U - - Google Patents
Info
- Publication number
- JPS6251813U JPS6251813U JP1985143076U JP14307685U JPS6251813U JP S6251813 U JPS6251813 U JP S6251813U JP 1985143076 U JP1985143076 U JP 1985143076U JP 14307685 U JP14307685 U JP 14307685U JP S6251813 U JPS6251813 U JP S6251813U
- Authority
- JP
- Japan
- Prior art keywords
- transistors
- bases
- transistor
- common emitter
- control voltage
- 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
- 238000010586 diagram Methods 0.000 description 4
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/04—Manually-operated control in untuned amplifiers
- H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0017—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier
- H03G1/0023—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal the device being at least one of the amplifying solid state elements of the amplifier in emitter-coupled or cascode amplifiers
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Amplifiers (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985143076U JPS6251813U (US06633600-20031014-M00021.png) | 1985-09-19 | 1985-09-19 | |
| US06/908,331 US4727335A (en) | 1985-09-19 | 1986-09-17 | Gain-controlled amplifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985143076U JPS6251813U (US06633600-20031014-M00021.png) | 1985-09-19 | 1985-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6251813U true JPS6251813U (US06633600-20031014-M00021.png) | 1987-03-31 |
Family
ID=15330353
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985143076U Pending JPS6251813U (US06633600-20031014-M00021.png) | 1985-09-19 | 1985-09-19 |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4727335A (US06633600-20031014-M00021.png) |
| JP (1) | JPS6251813U (US06633600-20031014-M00021.png) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002198798A (ja) * | 2000-12-26 | 2002-07-12 | Nec Corp | 出力回路 |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06338934A (ja) * | 1993-05-25 | 1994-12-06 | Exar Corp | 事象駆動型制御回路を有するスピーカーホーン |
| US5319704A (en) * | 1993-06-17 | 1994-06-07 | Exar Corporation | Control circuit for voltage controlled attenuator for speakerphones |
| JPH08237054A (ja) * | 1995-03-01 | 1996-09-13 | Nec Corp | 利得可変回路 |
| US6172566B1 (en) * | 1999-02-17 | 2001-01-09 | Kabushiki Kaisha Toshiba | Low noise amplifier |
| US6452452B1 (en) | 2000-07-10 | 2002-09-17 | Intersil Americas Inc. | Negative feedback gain control for common electrode transistor |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5819012A (ja) * | 1981-07-25 | 1983-02-03 | Nippon Gakki Seizo Kk | 利得制御増幅器 |
| JPS5826214B2 (ja) * | 1973-12-07 | 1983-06-01 | キヤノン株式会社 | アナログ−デイジタルヘンカンキ |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4331929A (en) * | 1979-04-04 | 1982-05-25 | Nippon Gakki Seizo Kabushiki Kaisha | Gain-controlled amplifier |
| JPS5646313A (en) * | 1979-09-21 | 1981-04-27 | Toshiba Corp | Variable gain amplifier |
-
1985
- 1985-09-19 JP JP1985143076U patent/JPS6251813U/ja active Pending
-
1986
- 1986-09-17 US US06/908,331 patent/US4727335A/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5826214B2 (ja) * | 1973-12-07 | 1983-06-01 | キヤノン株式会社 | アナログ−デイジタルヘンカンキ |
| JPS5819012A (ja) * | 1981-07-25 | 1983-02-03 | Nippon Gakki Seizo Kk | 利得制御増幅器 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002198798A (ja) * | 2000-12-26 | 2002-07-12 | Nec Corp | 出力回路 |
Also Published As
| Publication number | Publication date |
|---|---|
| US4727335A (en) | 1988-02-23 |
