CA1178337A - Automatic photocell loading - Google Patents
Automatic photocell loadingInfo
- Publication number
- CA1178337A CA1178337A CA000413593A CA413593A CA1178337A CA 1178337 A CA1178337 A CA 1178337A CA 000413593 A CA000413593 A CA 000413593A CA 413593 A CA413593 A CA 413593A CA 1178337 A CA1178337 A CA 1178337A
- Authority
- CA
- Canada
- Prior art keywords
- photo diode
- voltage
- loading
- output
- output 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.)
- Expired
Links
- 230000003405 preventing effect Effects 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000004044 response Effects 0.000 abstract description 13
- 239000003990 capacitor Substances 0.000 abstract description 5
- 230000035945 sensitivity Effects 0.000 abstract description 4
- 230000001052 transient effect Effects 0.000 abstract description 3
- 230000002028 premature Effects 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 11
- 238000013459 approach Methods 0.000 description 7
- 210000003127 knee Anatomy 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 241000272470 Circus Species 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J1/00—Photometry, e.g. photographic exposure meter
- G01J1/42—Photometry, e.g. photographic exposure meter using electric radiation detectors
- G01J1/44—Electric circuits
-
- 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
- H03G3/3084—Automatic control in amplifiers having semiconductor devices in receivers or transmitters for electromagnetic waves other than radiowaves, e.g. lightwaves
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Electromagnetism (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Electronic Switches (AREA)
- Dc-Dc Converters (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/311,845 US4424440A (en) | 1981-10-16 | 1981-10-16 | Automatic photocell loading |
| US06/311,845 | 1981-10-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1178337A true CA1178337A (en) | 1984-11-20 |
Family
ID=23208765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000413593A Expired CA1178337A (en) | 1981-10-16 | 1982-10-15 | Automatic photocell loading |
Country Status (10)
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2540625A1 (fr) * | 1983-02-04 | 1984-08-10 | Somfy | Capteur d'intensite lumineuse |
| US6373045B1 (en) * | 1999-06-29 | 2002-04-16 | Infineon Technologies North America Corp. | High speed optocoupler detector |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS404557Y1 (US07321065-20080122-C00160.png) * | 1959-11-02 | 1965-02-09 | ||
| GB1315115A (en) * | 1969-05-28 | 1973-04-26 | Plessey Co Ltd | Wall-coverings |
| JPS4912981B1 (US07321065-20080122-C00160.png) * | 1969-12-11 | 1974-03-28 | ||
| DE2002013C3 (de) * | 1970-01-17 | 1973-12-06 | Messerschmitt-Boelkow-Blohm Gmbh, 8000 Muenchen | Impulshchtempfanger mit Gleichlicht kompensation |
| JPS493585U (US07321065-20080122-C00160.png) * | 1972-04-10 | 1974-01-12 | ||
| SE380150B (US07321065-20080122-C00160.png) * | 1974-02-18 | 1975-10-27 | Bofors Ab | |
| JPS51134860A (en) * | 1975-05-19 | 1976-11-22 | Matsushita Electric Ind Co Ltd | Voltage nonnlinear resistor element and method of making same |
| DE2914266C2 (de) * | 1979-04-09 | 1983-04-21 | Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V., 3400 Göttingen | Photoelektrische Einrichtung zum Erzeugen eines einer Nutzlichtänderung entsprechenden elektrischen Ausgangssignales |
-
1981
- 1981-10-16 US US06/311,845 patent/US4424440A/en not_active Expired - Lifetime
-
1982
- 1982-10-12 IN IN1173/CAL/82A patent/IN158601B/en unknown
- 1982-10-13 MX MX194753A patent/MX153714A/es unknown
- 1982-10-14 DE DE8282305469T patent/DE3276545D1/de not_active Expired
- 1982-10-14 EP EP82305469A patent/EP0077648B1/en not_active Expired
- 1982-10-15 ES ES516562A patent/ES516562A0/es active Granted
- 1982-10-15 CA CA000413593A patent/CA1178337A/en not_active Expired
- 1982-10-15 AU AU89427/82A patent/AU8942782A/en not_active Abandoned
- 1982-10-15 JP JP57180111A patent/JPS58108424A/ja active Pending
- 1982-10-18 BR BR8206100A patent/BR8206100A/pt not_active IP Right Cessation
-
1983
- 1983-09-16 ES ES525681A patent/ES8405968A1/es not_active Expired
-
1990
- 1990-09-11 JP JP1990094828U patent/JPH0346837U/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0346837U (US07321065-20080122-C00160.png) | 1991-04-30 |
| EP0077648A3 (en) | 1983-06-08 |
| EP0077648A2 (en) | 1983-04-27 |
| JPS58108424A (ja) | 1983-06-28 |
| IN158601B (US07321065-20080122-C00160.png) | 1986-12-20 |
| ES525681A0 (es) | 1984-06-16 |
| DE3276545D1 (en) | 1987-07-16 |
| MX153714A (es) | 1986-12-22 |
| BR8206100A (pt) | 1983-09-20 |
| ES8405968A1 (es) | 1984-06-16 |
| EP0077648B1 (en) | 1987-06-10 |
| AU8942782A (en) | 1983-04-21 |
| ES8402464A1 (es) | 1984-01-16 |
| US4424440A (en) | 1984-01-03 |
| ES516562A0 (es) | 1984-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |