Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Resistive_opto-isolator> ?p ?o }
- Resistive_opto-isolator abstract "Resistive opto-isolator (RO), also called photoresistive opto-isolator, vactrol (after a genericized trademark introduced by Vactec, Inc. in the 1960s), analog opto-isolator or lamp-coupled photocell, is an optoelectronic device consisting of a source and detector of light, which are optically coupled and electrically isolated from each other. The light source is usually a light-emitting diode (LED), a miniature incandescent lamp, or sometimes a neon lamp, whereas the detector is a semiconductor-based photoresistor made of cadmium selenide (CdSe) or cadmium sulfide (CdS). The source and detector are coupled through a transparent glue or through the air.Electrically, RO is a resistance controlled by the current flowing through the light source. In the dark state, the resistance typically exceeds a few MOhm; when illuminated, it decreases as the inverse of the light intensity. In contrast to the photodiode and phototransistor, the photoresistor can operate in both the AC and DC circuits and have a voltage of several hundred volts across it. The harmonic distortions of the output current by the RO are typically within 0.1% at voltages below 0.5 V.RO is the first and the slowest opto-isolator: its switching time exceeds 1 ms, and for the lamp-based models can reach hundreds of milliseconds. Parasitic capacitance limits the frequency range of the photoresistor by ultrasonic frequencies. Cadmium-based photoresistors exhibit a "memory effect": their resistance depends on the illumination history; it also drifts during the illumination and stabilizes within hours, or even weeks for high-sensitivity models. Heating induces irreversible degradation of ROs, whereas cooling to below −25 °C dramatically increases the response time. Therefore, ROs were mostly replaced in the 1970s by the faster and more stable photodiodes and photoresistors. ROs are still used in some sound equipment, guitar amplifiers and analog synthesizers owing to their good electrical isolation, low signal distortion and ease of circuit design.".
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- Resistive_opto-isolator wikiPageWikiLink Amateur_radio.
- Resistive_opto-isolator wikiPageWikiLink Antenna_(radio).
- Resistive_opto-isolator wikiPageWikiLink Beverage_antenna.
- Resistive_opto-isolator wikiPageWikiLink Cadmium_selenide.
- Resistive_opto-isolator wikiPageWikiLink Cadmium_sulfide.
- Resistive_opto-isolator wikiPageWikiLink Cardioid.
- Resistive_opto-isolator wikiPageWikiLink Category:Electrical_components.
- Resistive_opto-isolator wikiPageWikiLink Category:Electrical_safety.
- Resistive_opto-isolator wikiPageWikiLink Category:Optoelectronics.
- Resistive_opto-isolator wikiPageWikiLink Category:Safety_engineering.
- Resistive_opto-isolator wikiPageWikiLink Category:Semiconductor_devices.
- Resistive_opto-isolator wikiPageWikiLink Category:Solid_state_switches.
- Resistive_opto-isolator wikiPageWikiLink Doepfer.
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- Resistive_opto-isolator wikiPageWikiLink Impedance_matching.
- Resistive_opto-isolator wikiPageWikiLink Incandescent_lamp.
- Resistive_opto-isolator wikiPageWikiLink Incandescent_light_bulb.
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- Resistive_opto-isolator wikiPageWikiLink Lee_de_Forest.
- Resistive_opto-isolator wikiPageWikiLink Light-emitting_diode.
- Resistive_opto-isolator wikiPageWikiLink Loom.
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- Resistive_opto-isolator wikiPageWikiLink Operating_temperature.
- Resistive_opto-isolator wikiPageWikiLink Opto-isolator.
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- Resistive_opto-isolator wikiPageWikiLink Oximeter.
- Resistive_opto-isolator wikiPageWikiLink Parasitic_capacitance.
- Resistive_opto-isolator wikiPageWikiLink Photodiode.
- Resistive_opto-isolator wikiPageWikiLink Photoeffect.
- Resistive_opto-isolator wikiPageWikiLink Photoelectric_effect.
- Resistive_opto-isolator wikiPageWikiLink Photoresistor.
- Resistive_opto-isolator wikiPageWikiLink Phototransistor.
- Resistive_opto-isolator wikiPageWikiLink Potentiometer.
- Resistive_opto-isolator wikiPageWikiLink Pulse_oximetry.
- Resistive_opto-isolator wikiPageWikiLink Radio_shack.
- Resistive_opto-isolator wikiPageWikiLink Royal_Air_Force.
- Resistive_opto-isolator wikiPageWikiLink Semiconductor.
- Resistive_opto-isolator wikiPageWikiLink The_Jazz_Singer.
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- Resistive_opto-isolator wikiPageWikiLink Vactec.
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- Resistive_opto-isolator wikiPageWikiLinkText "Resistive opto-isolator".
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- Resistive_opto-isolator subject Category:Electrical_components.
- Resistive_opto-isolator subject Category:Electrical_safety.
- Resistive_opto-isolator subject Category:Optoelectronics.
- Resistive_opto-isolator subject Category:Safety_engineering.
- Resistive_opto-isolator subject Category:Semiconductor_devices.
- Resistive_opto-isolator subject Category:Solid_state_switches.
- Resistive_opto-isolator hypernym Device.
- Resistive_opto-isolator type Article.
- Resistive_opto-isolator type Device.
- Resistive_opto-isolator type Article.
- Resistive_opto-isolator type Component.
- Resistive_opto-isolator type Semiconductor.
- Resistive_opto-isolator type Switch.