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PDF (635 KB) ... Print publication: Issue 2 (February 1932) ... Find related articles...
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www.iop.org/EJ/abstract/0950-7671/9/2/302
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SAO/NASA ADS Physics Abstract Service ... Title:; Photo cells: the valves which operate by light ... Publication:; Journal of Scientific Instruments, Volume 9, Issue 2, pp. 33-40 (1932).
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adsabs.harvard.edu/abs/1932JScI....9...33P
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This page provides free information about photocells ... photocells | Contact Us...
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www.wkonline.com/d/photocells.html
www.wkonline.com/d/photocells.html
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The majority of photocells operate with modulated light in the invisible infrared spectrum, which offers a wealth of advantages. Visible ambient light from lighting equipment for example does not interfere with the sensor function.
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www.ifm-electronic.com/ifmweb/techinf.nsf/0/4ED5F703A99...
www.ifm-electronic.com/ifmweb/techinf.nsf/0/4ED5F703A9957DF1C12568D900525EB3
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United States Patent 3418480 ... US Patent References:; Photosensitive two state circuits and systems; - - 3185850; Human contact controlled switching circuit using a multivibrator and biswitch; - - 3320438; Spring-driven electrical generator; ... - - 3342998; Photocell circuit control arrangement; - - 2838719;
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www.freepatentsonline.com/3418480.html
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1. A differential pressure converter comprising: 2. A differential pressure converter according to claim 1, characterized in that the two photocells operate according to the principle of differential connection.
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www.freepatentsonline.com/3745348.html
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Why It Pays to Build Efficiently ... Install motion sensors or photocells to operate lights automatically and prevent energy use in rooms or areas that are unoccupied.
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www.fypower.org/res/efficient_homes/new.html
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Photocells are used to maintain a given light level as required by the task. They can control a single ballast or a group of ballasts, depending on the size of the zone. ... 1). The photocells operate through the programmable controller. Programmable controllers are used, one on each floor, to provide overall control.
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www.luminoptics.com/lmcscontrolsystems.html
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OCCIDENTAL MEDICAL CENTER.USA. CANNON DESIGN (1981) ... Photocells operate solar control louvres situated in the flue cavity which are tilt adjusted to control the solar gain.
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www.battlemccarthy.demon.co.uk/research/doubleskin/case...
www.battlemccarthy.demon.co.uk/research/doubleskin/casestudies/occidental.htm
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