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158:, popular until the 1940s. In that application, the input radio frequency signal from the antenna is magnetically coupled into the LC circuit by an additional winding, and the feedback is reduced with adjustable gain control in the feedback loop, so the circuit is just short of oscillation. The result is a narrow-band radio-frequency filter and amplifier. The non-linear characteristic of the transistor or tube also
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In the
Meissner variant, the LC resonant circuit is exchanged with the feedback coil, i.e., in the output path (vacuum tube plate, field-effect transistor drain, or bipolar transistor collector) of the amplifier (e.g., Grebennikov, Fig. 2.8). Many publications, however, embrace both variants with
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either name. English speakers call it the "Armstrong oscillator", whereas German speakers call it the "MeiĂźner oscillator".
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to generate an oscillation. The
Meissner patent from 1913 describes a device for generating electrical vibrations, a
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286:, Proceedings of the Institute of Radio Engineers, September 1915, pages 215-238
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U.S. Patent No. 1,924,796. (filed: 16 March 1914; issued: 29 August 1933).
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as the amplifying element. Armstrong's original design used a triode
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67:. His circuits improved radio frequency reception. Meissner used a
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Meissner oscillator schematic, original 1913 vacuum tube version
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The circuit diagram shown is a modern implementation, using a
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253:", published April 10, 1913, issued June 23, 1919
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Einrichtung zur
Erzeugung elektrischer Schwingungen
144:{\displaystyle f={\frac {1}{2\pi {\sqrt {LC}}}}\,}
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63:presented in 1915 some recent developments in the
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284:Some recent developments in the audion receiver
79:because the distinguishing feature is that the
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298:RF and Microwave Transistor Oscillator Design
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162:the RF signal to produce the audio signal.
87:into the tank inductor by a "tickler coil"
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269:"Production of waves by cathode-ray tubes"
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83:signal needed to produce oscillations is
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75:. Both circuits are sometimes called a
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154:This circuit was widely used in the
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267:See also: Meissner, Alexander.
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594:Transmission-line oscillator
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579:Opto-electronic oscillator
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449:Meacham bridge oscillator
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223:Wireless receiving system
69:Lieben-Reisz-Strauss tube
548:Pearson–Anson oscillator
296:Grebennikov, A. (2007),
167:field-effect transistor
47:circuit which uses an
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530:Relaxation oscillators
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482:Phase-shift oscillator
401:Oscillator phase noise
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49:inductor and capacitor
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574:Delay-line oscillator
330:Armstrong oscillators
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73:de Forest Audion tube
45:electronic oscillator
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332:at Wikimedia Commons
282:Edwin H. Armstrong,
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85:magnetically coupled
37:Armstrong oscillator
599:Klystron oscillator
589:Robinson oscillator
538:Blocking oscillator
434:Colpitts oscillator
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247:Meissner, Alexander
219:Armstrong, Edwin H.
71:, Armstrong used a
41:Meissner oscillator
39:(also known as the
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444:Lampkin oscillator
439:Hartley oscillator
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77:tickler oscillator
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569:Cavity oscillator
515:Pierce oscillator
510:Butler oscillator
487:Twin-T oscillator
459:Vackář oscillator
454:Seiler oscillator
391:Leeson's equation
328:Media related to
307:978-0-470-02535-2
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55:used for
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189:See also
81:feedback
43:) is an
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374:Theory
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35:The
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20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
