Products/Services for Selenium Photocell
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Diodes - (1068 companies)Diodes are electronic components that conduct electric current in only one direction, functioning as a one-way valve. Diodes are manufactured using semiconductor materials such as silicon, germanium or selenium and are used as voltage regulators...Diode TypeDiode ApplicationsRoHS Compliant -
Photovoltaic Cells - (206 companies)...from shorting the cell. It is also expensive. Selenium is expensive and difficult to obtain and therefore too expensive for commercial use. It is well-suited to the solar spectrum since most photons have sufficient energy and few have too much... -
Photoconductive Cells - (42 companies)Photoconductive cells are light-sensitive resistors, in which resistance decreases with an increase in light intensity when illuminated. -
Power Rectifiers - (256 companies)Power rectifiers are electrical devices that convert alternating current (AC) to direct current (DC). They are an integral part of telecom rectifiers for the telecommunications industry, and in battery chargers, DC power systems, and other power system devices. -
Precipitation Systems - (28 companies)Precipitation systems promote the phenomenon that occurs when a substance held in solution passes out of solution into a solid form. -
Lux Meters (Light Meters) - (143 companies)...range. Photodetectors composed of selenium or silicon determine brightness photovoltaically. Generated current is proportional to the photons received. Silicon-based detectors need to amplify the voltage generated by light exposure. Selenium...
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Photovoltaic (PV) and Solar Power Systems - (784 companies)Solar power systems convert light into electricity. They are the building blocks of photovoltaic (PV) modules.
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Surface and Corrosion Protection Products - (255 companies)Surface protection products and corrosion protection products are used to provide protection to industrial surfaces particularly in the marine, transportation, chemical process, pulp and paper, and petroleum industries.
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Solar Radiation Instruments - (61 companies)Solar radiation instruments measure the spectral range of radiation, including global solar radiation (sun + sky), net radiation (incoming solar - reflected solar) and the photosynthetic light spectrum.
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Light Sensor Chips - (73 companies)Light sensor chips convert light into electrical signals which are then conditioned to produce a desired electrical output. They are sometimes called light-to-frequency chips, light-to-voltage chips, or ambient light sensors.
More Information
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The internal resistance of the selenium rectifier photocell, with special reference to the sputtered metal film
The picture of the selenium photocell just given is admittedly incomplete, but it servesto show the importance of the r61e played by the internal resistance, and, together with knowledge of the approximatevalue, or even the order, of this resistance, it forms an …
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The Relative Spectral Response of the Selenium Rectifier Photocell in Relation to Photometry and the Design of Spectral Correction Filters
One might expect, therefore, that one general type of correction iilter might be found to suit all selenium photocells , minor variations in its componentsbeing sufficient to cope with the individual matching of the filter to the cell in cases where this refinement …
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SOME PROBLEMS IN THE MEASUREMENT OF RADIATION UNDER WATER: A REVIEW
Absolute values may be determined above the water but relative values, determined, with selenium photocells , are more usual underwater.
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Accuracy In The Photometry Of Retroreflectors
SELENIUM PHOTOCELL WITH WRATTON 102 FILTER .
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Some Points in the Design of Optical Levers and Amplifiers
Iron- selenium photocells have been used, feeding directly a mirror galvanometer ; the simplicity of this arrangement was intended to eliminate the instability that may occur in electronic D.C. amplifiers working from emission-type photocells.
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Ultraviolet Air Disinfection in a Children's Hospital A Technical and Bacteriological Study 1
Before a selenium photocell can be used for measurement of ultraviolet radiation with wave-lengths below 2,800-2,600 A, its surface layer of lacquer must be re- moved.
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Handbook of Analytical Instruments, Second Edition > Colorimeters and Spectrophotometers (Visible–Ultraviolet)
Since selenium photocells have very low internal resistance, it is difficult to amplify the current they produce by using dc amplifiers.
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The determination of arsenic in gelatin by means of the molybdenum‐blue reaction
The optical density of a given solution measured at 835 mp was about three times greater than when measured with the selenium photocell absorptiometers.
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A History of the World Semiconductor Industry
However, this early work came to nothing, and the development of the selenium photocell did not begin again until 1931.
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An improved direct-reading X-ray microdensitometer
A. Taylor . a selenium photocell by Evans Electroselenium Ltd. replaces the gas cell and associated high-tension accumu- lators employed with the earlier model, and a high-speed galvanometer system replaces the electrometer.
