Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Photoresistor> ?p ?o }
- Photoresistor abstract "A photoresistor or light-dependent resistor (LDR) or photocell is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. A photoresistor can be applied in light-sensitive detector circuits, and light- and dark-activated switching circuits. A photoresistor is made of a high resistance semiconductor. In the dark, a photoresistor can have a resistance as high as several megohms (MΩ), while in the light, a photoresistor can have a resistance as low as a few hundred ohms. If incident light on a photoresistor exceeds a certain frequency, photons absorbed by the semiconductor give bound electrons enough energy to jump into the conduction band. The resulting free electrons (and their hole partners) conduct electricity, thereby lowering resistance. The resistance range and sensitivity of a photoresistor can substantially differ among dissimilar devices. Moreover, unique photoresistors may react substantially differently to photons within certain wavelength bands.A photoelectric device can be either intrinsic or extrinsic. An intrinsic semiconductor has its own charge carriers and is not an efficient semiconductor, for example, silicon. In intrinsic devices the only available electrons are in the valence band, and hence the photon must have enough energy to excite the electron across the entire bandgap. Extrinsic devices have impurities, also called dopants, added whose ground state energy is closer to the conduction band; since the electrons do not have as far to jump, lower energy photons (that is, longer wavelengths and lower frequencies) are sufficient to trigger the device. If a sample of silicon has some of its atoms replaced by phosphorus atoms (impurities), there will be extra electrons available for conduction. This is an example of an extrinsic semiconductor.".
- Photoresistor thumbnail LDR_1480405_6_7_HDR_Enhancer_1.jpg?width=300.
- Photoresistor wikiPageExternalLink MoonLight.html.
- Photoresistor wikiPageExternalLink photoresistor.html.
- Photoresistor wikiPageExternalLink light_dependent_resistor.php.
- Photoresistor wikiPageExternalLink lab7.
- Photoresistor wikiPageID "102789".
- Photoresistor wikiPageLength "6499".
- Photoresistor wikiPageOutDegree "46".
- Photoresistor wikiPageRevisionID "683016157".
- Photoresistor wikiPageWikiLink Alarm_device.
- Photoresistor wikiPageWikiLink Alarm_devices.
- Photoresistor wikiPageWikiLink Band_gap.
- Photoresistor wikiPageWikiLink Bandgap.
- Photoresistor wikiPageWikiLink Cadmium_selenide.
- Photoresistor wikiPageWikiLink Cadmium_sulfide.
- Photoresistor wikiPageWikiLink Cadmium_sulphide.
- Photoresistor wikiPageWikiLink Category:Optical_devices.
- Photoresistor wikiPageWikiLink Category:Resistive_components.
- Photoresistor wikiPageWikiLink Category:Sensors.
- Photoresistor wikiPageWikiLink Charge_carrier.
- Photoresistor wikiPageWikiLink Conduction_band.
- Photoresistor wikiPageWikiLink Copper.
- Photoresistor wikiPageWikiLink Dopant.
- Photoresistor wikiPageWikiLink Dopants.
- Photoresistor wikiPageWikiLink Dynamic_range_compression.
- Photoresistor wikiPageWikiLink Electrical_resistance.
- Photoresistor wikiPageWikiLink Electrical_resistance_and_conductance.
- Photoresistor wikiPageWikiLink Electron.
- Photoresistor wikiPageWikiLink Electron_hole.
- Photoresistor wikiPageWikiLink Frequency.
- Photoresistor wikiPageWikiLink Germanium.
- Photoresistor wikiPageWikiLink Guitar_amplifier.
- Photoresistor wikiPageWikiLink Guitar_amplifiers.
- Photoresistor wikiPageWikiLink Incandescent_lamp.
- Photoresistor wikiPageWikiLink Incandescent_light_bulb.
- Photoresistor wikiPageWikiLink Indium_antimonide.
- Photoresistor wikiPageWikiLink Infrared.
- Photoresistor wikiPageWikiLink Infrared_astronomy.
- Photoresistor wikiPageWikiLink Infrared_spectroscopy.
- Photoresistor wikiPageWikiLink Latency_(engineering).
- Photoresistor wikiPageWikiLink Lead_sulfide.
- Photoresistor wikiPageWikiLink Lead_sulphide.
- Photoresistor wikiPageWikiLink Light-emitting_diode.
- Photoresistor wikiPageWikiLink Neon.
- Photoresistor wikiPageWikiLink Neon_lamp.
- Photoresistor wikiPageWikiLink Night_light.
- Photoresistor wikiPageWikiLink Nightlight.
- Photoresistor wikiPageWikiLink Optoelectronics.
- Photoresistor wikiPageWikiLink Passive.
- Photoresistor wikiPageWikiLink Photoconductivity.
- Photoresistor wikiPageWikiLink Photodiode.
- Photoresistor wikiPageWikiLink Photon.
- Photoresistor wikiPageWikiLink Phototransistor.
- Photoresistor wikiPageWikiLink Resistor.
- Photoresistor wikiPageWikiLink Restriction_of_Hazardous_Substances_Directive.
- Photoresistor wikiPageWikiLink Semiconductor.
- Photoresistor wikiPageWikiLink Semiconductor_device.
- Photoresistor wikiPageWikiLink Tremolo_(electronic_effect).
- Photoresistor wikiPageWikiLink Valence_and_conduction_bands.
- Photoresistor wikiPageWikiLink Valence_band.
- Photoresistor wikiPageWikiLink File:Photoresistor.gif.
- Photoresistor wikiPageWikiLink File:Photoresistors_-_three_sizes_-_mm_scale.jpg.
- Photoresistor wikiPageWikiLink File:Streetlight_control.jpg.
- Photoresistor wikiPageWikiLinkText "CdS".
- Photoresistor wikiPageWikiLinkText "LDR".
- Photoresistor wikiPageWikiLinkText "Light-dependent resistor".
- Photoresistor wikiPageWikiLinkText "Photoresistor".
- Photoresistor wikiPageWikiLinkText "cadmium sulfide cell".
- Photoresistor wikiPageWikiLinkText "cadmium sulphide".
- Photoresistor wikiPageWikiLinkText "exposure meter".
- Photoresistor wikiPageWikiLinkText "light dependent resistor".
- Photoresistor wikiPageWikiLinkText "light sensitive resistor".
- Photoresistor wikiPageWikiLinkText "photo cells".
- Photoresistor wikiPageWikiLinkText "photocell".
- Photoresistor wikiPageWikiLinkText "photoresistance".
- Photoresistor wikiPageWikiLinkText "photoresistivity".
- Photoresistor wikiPageWikiLinkText "photoresistor".
- Photoresistor hasPhotoCollection Photoresistor.
- Photoresistor imageSize "201".
- Photoresistor name "Photoresistor".
- Photoresistor symbol File:Photoresistor.gif.
- Photoresistor symbolCaption "The symbol for a photoresistor".
- Photoresistor type Passive.
- Photoresistor wikiPageUsesTemplate Template:Authority_control.
- Photoresistor wikiPageUsesTemplate Template:Commonscat.
- Photoresistor wikiPageUsesTemplate Template:Distinguish.
- Photoresistor wikiPageUsesTemplate Template:Infobox_electronic_component.
- Photoresistor wikiPageUsesTemplate Template:Reflist.
- Photoresistor workingPrinciple Photoconductivity.
- Photoresistor subject Category:Optical_devices.
- Photoresistor subject Category:Resistive_components.
- Photoresistor subject Category:Sensors.
- Photoresistor hypernym Resistor.
- Photoresistor type Instrument.
- Photoresistor type Application.
- Photoresistor type Component.
- Photoresistor type Instrument.
- Photoresistor type Sensor.
- Photoresistor type Transducer.