Editing Colpitts oscillator (section)

{{Short description|LC oscillator design}}
A '''Colpitts oscillator''', invented in 1918 by Canadian-American engineer [[Edwin H. Colpitts]] using [[vacuum tube]]s,<ref>{{cite patent |country-code=US |patent-number=1624537 |inventor-last=Colpitts |inventor-first=Edwin H. |title=Oscillation generator |publication-date=1 February 1918 |issue-date=12 April 1927 }}</ref> is one of a number of designs for [[LC oscillator]]s, [[electronic oscillator]]s that use a combination of [[inductor]]s (L) and [[capacitor]]s (C) to produce an oscillation at a certain frequency.  The distinguishing feature of the Colpitts oscillator is that the [[feedback]] for the active device is taken from a [[voltage divider]] made of two capacitors in series across the inductor.<ref name="Gottlieb">{{cite book   
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  | first = Irving Gottlieb
  | title = Practical Oscillator Handbook
  | publisher = Elsevier
  | year = 1997
  | location = US
  | pages = 151
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  | title = RF Components and Circuits 
  | publisher = Newnes
  | year = 2002
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  | publisher = Cambridge University Press
  | year = 1991
  | location = UK
  | pages = 153
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  | isbn = 0521360463}}</ref><ref name="Rohde">{{cite book   
  | last = Rohde
  | first = Ulrich L.
  | authorlink = 
  |author2=Matthias Rudolph
  | title = RF / Microwave Circuit Design for Wireless Applications, 2nd Ed.
  | publisher = John Wiley & Sons
  | year = 2012
  | location = 
  | pages = 745–746
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  | isbn = 978-1118431405}}</ref>