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Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Dynatron_oscillator> ?p ?o }

• Dynatron_oscillator abstract "In electronics, the dynatron oscillator, invented in 1918 by Albert Hull at General Electric, is an obsolete vacuum tube electronic oscillator circuit which uses a negative resistance characteristic in early tetrode vacuum tubes, caused by a process called secondary emission. It was the first negative resistance vacuum tube oscillator. The dynatron oscillator circuit was used to a limited extent as beat frequency oscillators (BFOs), and local oscillators in vacuum tube radio receivers as well as in scientific and test equipment from the 1920s to the 1940s but became obsolete around World War 2 due to the variability of secondary emission in tubes.Negative transconductance oscillators, such as the transitron oscillator invented by Cleto Brunetti in 1939, are similar negative resistance vacuum tube oscillator circuits which are based on negative transconductance (a fall in current through one grid electrode caused by an increase in voltage on a second grid) in a pentode or other multigrid vacuum tube. These replaced the dynatron circuit and were employed in vacuum tube electronic equipment through the 1970s.".
• Dynatron_oscillator thumbnail Dynatron_signal_generator_1931.jpg?width=300.
• Dynatron_oscillator wikiPageID "530636".
• Dynatron_oscillator wikiPageLength "26303".
• Dynatron_oscillator wikiPageOutDegree "72".
• Dynatron_oscillator wikiPageRevisionID "701498917".
• Dynatron_oscillator wikiPageWikiLink Albert_W._Hull.
• Dynatron_oscillator wikiPageWikiLink Armstrong_oscillator.
• Dynatron_oscillator wikiPageWikiLink Balthasar_van_der_Pol.
• Dynatron_oscillator wikiPageWikiLink Beat_frequency_oscillator.
• Dynatron_oscillator wikiPageWikiLink Biasing.
• Dynatron_oscillator wikiPageWikiLink Capacitance.
• Dynatron_oscillator wikiPageWikiLink Capacitor.
• Dynatron_oscillator wikiPageWikiLink Category:Oscillators.
• Dynatron_oscillator wikiPageWikiLink Cathode.
• Dynatron_oscillator wikiPageWikiLink Cavity_magnetron.
• Dynatron_oscillator wikiPageWikiLink Control_grid.
• Dynatron_oscillator wikiPageWikiLink Crystal_oscillator.
• Dynatron_oscillator wikiPageWikiLink Electrical_resistance_and_conductance.
• Dynatron_oscillator wikiPageWikiLink Electron.
• Dynatron_oscillator wikiPageWikiLink Electronic_oscillator.
• Dynatron_oscillator wikiPageWikiLink Feedback.
• Dynatron_oscillator wikiPageWikiLink General_Electric.
• Dynatron_oscillator wikiPageWikiLink Graphite.
• Dynatron_oscillator wikiPageWikiLink Hartley_oscillator.
• Dynatron_oscillator wikiPageWikiLink Inductance.
• Dynatron_oscillator wikiPageWikiLink Inductor.
• Dynatron_oscillator wikiPageWikiLink LC_circuit.
• Dynatron_oscillator wikiPageWikiLink Local_oscillator.
• Dynatron_oscillator wikiPageWikiLink Negative_resistance.
• Dynatron_oscillator wikiPageWikiLink Noise_(electronics).
• Dynatron_oscillator wikiPageWikiLink Parasitic_oscillation.
• Dynatron_oscillator wikiPageWikiLink Pentagrid_converter.
• Dynatron_oscillator wikiPageWikiLink Pentode.
• Dynatron_oscillator wikiPageWikiLink Plate_electrode.
• Dynatron_oscillator wikiPageWikiLink Radio_receiver.
• Dynatron_oscillator wikiPageWikiLink Resonance.
• Dynatron_oscillator wikiPageWikiLink Secondary_emission.
• Dynatron_oscillator wikiPageWikiLink Signal_generator.
• Dynatron_oscillator wikiPageWikiLink Sine_wave.
• Dynatron_oscillator wikiPageWikiLink Superheterodyne_receiver.
• Dynatron_oscillator wikiPageWikiLink Suppressor_grid.
• Dynatron_oscillator wikiPageWikiLink Television.
• Dynatron_oscillator wikiPageWikiLink Tetrode.
• Dynatron_oscillator wikiPageWikiLink Transconductance.
• Dynatron_oscillator wikiPageWikiLink Triode.
• Dynatron_oscillator wikiPageWikiLink Tunnel_diode.
• Dynatron_oscillator wikiPageWikiLink Vacuum_tube.
• Dynatron_oscillator wikiPageWikiLink File:Dynatron_oscillator_circuit.svg.
• Dynatron_oscillator wikiPageWikiLink File:Dynatron_tube.png.
• Dynatron_oscillator wikiPageWikiLink File:Transitron_characteristic.svg.
• Dynatron_oscillator wikiPageWikiLink File:Transitron_oscillator_circuit.svg.
• Dynatron_oscillator wikiPageWikiLink File:UY224_tetrode_plate_current_negative_resistance.svg.
• Dynatron_oscillator wikiPageWikiLinkText "Dynatron oscillator".
• Dynatron_oscillator wikiPageWikiLinkText "Transitron".
• Dynatron_oscillator wikiPageWikiLinkText "dynatron oscillator".
• Dynatron_oscillator wikiPageWikiLinkText "dynatron".
• Dynatron_oscillator align "right".
• Dynatron_oscillator caption "A modern tetrode, the 6P25. Due to a coating on the plate, there is very little secondary emission, so there is virtually no negative resistance region in the curves, making this tube unusable for dynatron operation.".
• Dynatron_oscillator caption "An early tetrode, the RCA 24-A from 1929, showing on the lefthand side the negative resistance "kink" in the curves due to secondary emission. At a screen voltage VC2 of 90 V it has negative resistance between about Vp = 10 to 60 V.".
• Dynatron_oscillator caption "Dynatron vacuum tube signal generator, 1931. It covered the range 1.8 to 15 MHz. The circuit was used in signal generators due to its frequency stability, which was compared to crystal oscillators".
• Dynatron_oscillator caption "The dynatron oscillator circuit was also used as the local oscillator in superheterodyne radio receivers, such as this 1931 Crosley model 122 seven tube radio.".
• Dynatron_oscillator direction "horizontal".
• Dynatron_oscillator header "Plate current vs plate voltage curves for tetrodes:".
• Dynatron_oscillator image "Crosley 122 "Super Buddy Boy" radio receiver 1931.jpg".
• Dynatron_oscillator image "Dynatron signal generator 1931.jpg".
• Dynatron_oscillator image "RCA 24-A screen grid tube anode characteristics.png".
• Dynatron_oscillator image "Tetrode.png".
• Dynatron_oscillator width "180".
• Dynatron_oscillator width "200".
• Dynatron_oscillator width "240".
• Dynatron_oscillator width "265".
• Dynatron_oscillator wikiPageUsesTemplate Template:Multiple_image.
• Dynatron_oscillator wikiPageUsesTemplate Template:Reflist.
• Dynatron_oscillator subject Category:Oscillators.
• Dynatron_oscillator hypernym Circuit.
• Dynatron_oscillator type BaseballLeague.
• Dynatron_oscillator type Circuit.
• Dynatron_oscillator type Component.
• Dynatron_oscillator comment "In electronics, the dynatron oscillator, invented in 1918 by Albert Hull at General Electric, is an obsolete vacuum tube electronic oscillator circuit which uses a negative resistance characteristic in early tetrode vacuum tubes, caused by a process called secondary emission. It was the first negative resistance vacuum tube oscillator.".
• Dynatron_oscillator label "Dynatron oscillator".
• Dynatron_oscillator sameAs Q176207.
• Dynatron_oscillator sameAs NDR_oscillator.
• Dynatron_oscillator sameAs m.02m403.
• Dynatron_oscillator sameAs Q176207.
• Dynatron_oscillator wasDerivedFrom Dynatron_oscillator?oldid=701498917.
• Dynatron_oscillator depiction Dynatron_signal_generator_1931.jpg.
• Dynatron_oscillator isPrimaryTopicOf Dynatron_oscillator.