FR2189951A1 - - Google Patents
Info
- Publication number
- FR2189951A1 FR2189951A1 FR7322146A FR7322146A FR2189951A1 FR 2189951 A1 FR2189951 A1 FR 2189951A1 FR 7322146 A FR7322146 A FR 7322146A FR 7322146 A FR7322146 A FR 7322146A FR 2189951 A1 FR2189951 A1 FR 2189951A1
- Authority
- FR
- France
- 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
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/56—Modifications of input or output impedances, not otherwise provided for
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/04—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only
- H03F3/08—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light
- H03F3/082—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements with semiconductor devices only controlled by light with FET's
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Optical Communication System (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US26382272A | 1972-06-19 | 1972-06-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2189951A1 true FR2189951A1 (US07122547-20061017-C00273.png) | 1974-01-25 |
| FR2189951B1 FR2189951B1 (US07122547-20061017-C00273.png) | 1977-02-11 |
Family
ID=23003367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7322146A Expired FR2189951B1 (US07122547-20061017-C00273.png) | 1972-06-19 | 1973-06-16 |
Country Status (10)
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0306798A2 (en) * | 1987-09-09 | 1989-03-15 | National Semiconductor Corporation | Low noise, high speed current or voltage amplifier |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3937426B2 (ja) * | 2001-07-16 | 2007-06-27 | 日本電気株式会社 | プリアンプ回路 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3523189A (en) * | 1968-05-23 | 1970-08-04 | Trw Inc | Light-sensitive circuit in which the effective load of a phototransistor is bootstrapped |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2587589A (en) * | 1947-11-03 | 1952-03-04 | Moore Electronic Lab Inc | Sealed lens phototube |
| US2724761A (en) * | 1951-08-18 | 1955-11-22 | Bell Telephone Labor Inc | High tolerance impedance elements and methods of making them |
| DE951746C (de) * | 1952-11-20 | 1956-10-31 | Felten & Guilleaume Carlswerk | Elektrischer Messwiderstand |
| US2877355A (en) * | 1955-03-28 | 1959-03-10 | Ibm | Bistable phototube |
| US3223938A (en) * | 1962-05-11 | 1965-12-14 | Bendix Corp | Emitter follower transistor amplifier |
| DE1216981B (de) * | 1963-09-12 | 1966-05-18 | Licentia Gmbh | Niederohmiger Messwiderstand fuer Starkstrom |
| US3657543A (en) * | 1968-07-24 | 1972-04-18 | Optronix Inc | Optical communications system with improved bias control for photosensitive input device |
| US3705986A (en) * | 1971-01-25 | 1972-12-12 | Computer Transmission Corp | Optical data transmission system |
-
1972
- 1972-06-19 US US00263822A patent/US3792256A/en not_active Expired - Lifetime
-
1973
- 1973-06-13 CA CA173,993A patent/CA996190A/en not_active Expired
- 1973-06-14 GB GB2836873A patent/GB1439654A/en not_active Expired
- 1973-06-16 FR FR7322146A patent/FR2189951B1/fr not_active Expired
- 1973-06-18 IL IL42533A patent/IL42533A/en unknown
- 1973-06-18 SE SE7308561A patent/SE388945B/xx unknown
- 1973-06-18 DE DE2331007A patent/DE2331007C2/de not_active Expired
- 1973-06-18 JP JP6863073A patent/JPS579260B2/ja not_active Expired
- 1973-06-19 NL NL7308533A patent/NL7308533A/xx not_active Application Discontinuation
- 1973-06-19 IT IT25586/73A patent/IT989294B/it active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3523189A (en) * | 1968-05-23 | 1970-08-04 | Trw Inc | Light-sensitive circuit in which the effective load of a phototransistor is bootstrapped |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0306798A2 (en) * | 1987-09-09 | 1989-03-15 | National Semiconductor Corporation | Low noise, high speed current or voltage amplifier |
| EP0306798A3 (en) * | 1987-09-09 | 1990-05-30 | National Semiconductor Corporation | Low noise, high speed current or voltage amplifier |
Also Published As
| Publication number | Publication date |
|---|---|
| SE388945B (sv) | 1976-10-18 |
| DE2331007A1 (de) | 1974-01-17 |
| IL42533A (en) | 1976-05-31 |
| JPS579260B2 (US07122547-20061017-C00273.png) | 1982-02-20 |
| CA996190A (en) | 1976-08-31 |
| IT989294B (it) | 1975-05-20 |
| JPS49109083A (US07122547-20061017-C00273.png) | 1974-10-17 |
| NL7308533A (US07122547-20061017-C00273.png) | 1973-12-21 |
| GB1439654A (en) | 1976-06-16 |
| IL42533A0 (en) | 1973-08-29 |
| FR2189951B1 (US07122547-20061017-C00273.png) | 1977-02-11 |
| US3792256A (en) | 1974-02-12 |
| DE2331007C2 (de) | 1985-11-21 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |