Colpitts Ideal Model
Colpitts is a surname. Notable people with the surname include: * A. Russell Colpitts (born 1906), farmer and political figure in New Brunswick, Canada * Edwin H. Colpitts (1872–1949), communications pioneer best known for his invention of the Colpitts oscillator **Colpitts oscillator, design for an LC electronic oscillator circuit See also *Colpitts Grange Colpitts Grange is a hamlet in Northumberland, England. It is about to the south-east of Hexham. Governance Colpitts Grange is in the House of Commons of the United Kingdom, parliamentary constituency of Hexham (UK Parliament constituency ...

Edwin H
The name Edwin means "rich friend". It comes from the Old English elements "ead" (rich, blessed) and "ƿine" (friend). The original Anglo-Saxon form is Eadƿine, which is also found for Anglo-Saxon figures. People * Edwin of Northumbria (died 632 or 633), King of Northumbria and Christian saint * Edwin (son of Edward the Elder) (died 933) * Eadwine of Sussex (died 982), King of Sussex * Eadwine of Abingdon (died 990), Abbot of Abingdon * Edwin, Earl of Mercia (died 1071), brother-in-law of Harold Godwinson (Harold II) *Edwin (director) (born 1978), Indonesian filmmaker * Edwin (musician) (born 1968), Canadian musician * Edwin Abeygunasekera, Sri Lankan Sinhala politician, member of the 1st and 2nd State Council of Ceylon * Edwin Ariyadasa (1922-2021), Sri Lankan Sinhala journalist * Edwin Austin Abbey (1852–1911) British artist * Edwin Eugene Aldrin (born 1930), although he changed it to Buzz Aldrin, American astronaut * Edwin Howard Armstrong (1890–1954), American ...
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Colpitts Oscillator
A Colpitts oscillator, invented in 1918 by American engineer Edwin H. Colpitts, is one of a number of designs for LC oscillators, electronic oscillators that use a combination of inductors (L) and capacitors (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. Overview The Colpitts circuit, like other LC oscillators, consists of a gain device (such as a bipolar junction transistor, field-effect transistor, operational amplifier, or vacuum tube) with its output connected to its input in a feedback loop containing a parallel LC circuit (tuned circuit), which functions as a bandpass filter to set the frequency of oscillation. The amplifier will have differing input and output impedances, and these need to be coupled into the LC circuit without overly damping it. A Colpitts oscillator uses a pair ...
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