DE2830697C3 - - Google Patents
Info
- Publication number
- DE2830697C3 DE2830697C3 DE2830697A DE2830697A DE2830697C3 DE 2830697 C3 DE2830697 C3 DE 2830697C3 DE 2830697 A DE2830697 A DE 2830697A DE 2830697 A DE2830697 A DE 2830697A DE 2830697 C3 DE2830697 C3 DE 2830697C3
- Authority
- DE
- Germany
- 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.)
- Expired
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
- H03G11/002—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general without controlling loop
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/288—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Lens Barrels (AREA)
- Television Receiver Circuits (AREA)
- Studio Devices (AREA)
- Automatic Focus Adjustment (AREA)
- Control Of Electric Motors In General (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1977094930U JPS5926697Y2 (ja) | 1977-07-16 | 1977-07-16 | テレビレンズ用サ−ボ増幅回路 |
Publications (3)
Publication Number | Publication Date |
---|---|
DE2830697A1 DE2830697A1 (de) | 1979-01-18 |
DE2830697B2 DE2830697B2 (de) | 1979-11-29 |
DE2830697C3 true DE2830697C3 (fr) | 1984-10-04 |
Family
ID=14123677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2830697A Granted DE2830697B2 (de) | 1977-07-16 | 1978-07-12 | Servoverstärker zum Antrieb eines Servomotors einer Fernsehkameralinseneinrichtung |
Country Status (3)
Country | Link |
---|---|
JP (1) | JPS5926697Y2 (fr) |
DE (1) | DE2830697B2 (fr) |
FR (1) | FR2397751A1 (fr) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5866904A (ja) * | 1981-10-17 | 1983-04-21 | Fuji Photo Optical Co Ltd | サ−ボモジユ−ル用制御回路 |
JP2885376B2 (ja) * | 1989-03-13 | 1999-04-19 | 富士写真光機株式会社 | テレビカメラ用レンズ装置 |
JP2794631B2 (ja) * | 1989-05-10 | 1998-09-10 | キヤノン株式会社 | パワーズーム機能付カメラ及びレンズ交換可能なカメラ及びパワーズーム機能付交換レンズ |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3061673A (en) * | 1959-02-05 | 1962-10-30 | Thompson Ramo Wooldridge Inc | Servo system for light level control |
DE1917015C3 (de) * | 1969-04-02 | 1975-11-20 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Anordnung zum Regeln der Amplitude des Ausgangssignals einer Fernsehaufnahmeröhre |
US3593078A (en) * | 1969-09-08 | 1971-07-13 | North American Rockwell | Starting and operating control for an ac motor powered by a dc power supply |
DE2113942B2 (de) * | 1971-03-23 | 1973-09-13 | Siemens Ag, 1000 Berlin U. 8000 Muenchen | Kamera, insbesondere Fernsehkamera |
JPS4923631A (fr) * | 1972-06-22 | 1974-03-02 | ||
US3848123A (en) * | 1973-03-30 | 1974-11-12 | Rca Corp | Automatic brightness control for image intensifier tube |
JPS5131651U (fr) * | 1974-08-29 | 1976-03-08 |
-
1977
- 1977-07-16 JP JP1977094930U patent/JPS5926697Y2/ja not_active Expired
-
1978
- 1978-07-12 DE DE2830697A patent/DE2830697B2/de active Granted
- 1978-07-13 FR FR7821048A patent/FR2397751A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
FR2397751B1 (fr) | 1982-04-23 |
JPS5422416U (fr) | 1979-02-14 |
JPS5926697Y2 (ja) | 1984-08-02 |
FR2397751A1 (fr) | 1979-02-09 |
DE2830697B2 (de) | 1979-11-29 |
DE2830697A1 (de) | 1979-01-18 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OAP | Request for examination filed | ||
OD | Request for examination | ||
C3 | Grant after two publication steps (3rd publication) | ||
8339 | Ceased/non-payment of the annual fee |