Editing Wien bridge oscillator (section)

==External links==
{{Commonscat|Wien bridge oscillators}}
* [http://www.hp.com/hpinfo/abouthp/histnfacts/museum/earlyinstruments/0002/index.html Model 200A Audio Oscillator, 1939], HP Virtual Museum.
* [http://www.ecircuitcenter.com/Circuits/opwien/opwien.htm Wien Bridge Oscillator], including SPICE simulation. The "Wien bridge oscillator" in the simulation is not a low distortion design with amplitude stabilization; it is a more conventional oscillator with a diode limiter.
* {{Citation |last1=Aigrain |first1=P. R. |last2=Williams |first2=E. M. |title=Theory of Amplitude-Stabilized Oscillators |date=January 1948 |journal=Proceedings of the IRE |volume=36 |issue=1 |pages=16–19 |doi=10.1109/JRPROC.1948.230539 |s2cid=51640873 |ref=none}}
* [http://www.cirvirlab.com/simulation/op_amp_wien_bridge_oscillator_online.php Online Simulator of  Wien Bridge Oscillator] – Gives online simulation of Wien bridge oscillator.
* [http://www.cliftonlaboratories.com/Bill%20Hewlett%20and%20his%20Magic%20Lamp.htm Bill Hewlett and his Magic Lamp], Clifton Laboratories
* {{citation |date=October 1939 |journal=Proceedings of the IRE |volume=27 |issue=10 |pages=649–655 |first1=F. E. |last1=Terman |first2=R. R. |last2=Buss |first3=W. R. |last3=Hewlett |first4=F. C. |last4=Cahill |url=http://www.hparchive.com/Manuals/HP-200-IRE-Article.pdf |title=Some Applications of Negative Feedback with Particular Reference to Laboratory Equipment |doi=10.1109/JRPROC.1939.228752|s2cid=51642790 }} (Acks Edward L. Ginzton at end of paper.) (Presented 16 June 1938 at 13th Annual Convention, Manuscript received 22 November 1938, abridged 1 August 1939); Meacham presented at 13th Annual Convention on 16 June 1938, too. See BSTJ. Also presented at Pacific Coast Convention, Portland, OR, 11 August 1938.
*: {{harvtxt|Terman|Buss|Hewlett|Cahill|1939|pp=653–654}}, §''Resistance-stabilized Oscillators Employing Negative Feedback'', state "For a discussion of ordinary resistance-stabilized oscillators see pages 283–289 of F. E. Terman, 'Measurements in Radio Engineering,' McGraw-Hill Book Company, New York, N.Y., (1935)." {{OCLC|180980}} {{ASIN|B001KZ1IFK}} (diode limiting)
*: {{harvtxt|Terman|Buss|Hewlett|Cahill|1939|p=654}} state, "This oscillator [Hewlett's] somewhat resembles that described by H. H. Scott, in the paper 'A new type of selective circuit and some applications,' Proc. I.R.E., vol 26, pp. 226–236; February, (1938), although differing in a number of respects, such as being provided with amplitude control and having the frequency adjusted by variable condensers rather than variable resistors. The latter feature makes the impedance from ''a'' to ground constant as the capacitance is varied to change the frequency, and so greatly simplifies the design of the amplifier circuits."
* {{cite patent |inventor-last=Wise |inventor-first=Raymond O. |country-code=US |patent-number=2319965 |title=Variable Frequency Bridge Stabilized Oscillator |publication-date=14 June 1941 |issue-date=25 May 1943 |assign1=Bell Telephone Laboratories |ref=none}}
* {{cite patent |inventor-last=Edson |inventor-first=William A. |country-code=US |patent-number=2343539 |title=Stabilized Oscillator |publication-date=16 January 1942 |issue-date=7 March 1944 |assign1=Bell Telephone Laboratories |ref=none}}
* http://www.radiomuseum.org/forum/single_pentode_wien_bridge_oscillator.html
*:: http://www.americanradiohistory.com/Archive-Bell-Laboratories-Record/40s/Bell-Laboratories-Record-1945-12.pdf has Black bio; "Stabilized feedback amplifier" won prize in 1934. <!-- Also has MF signaling and Potter's visible speech! -->
* {{US patent|2303485}} Later (31 December 1940) Meacham patent about multi-frequency bridge-stabilized oscillators using series resonant circuits.

{{Electronic oscillators}}

{{DEFAULTSORT:Wien Bridge Oscillator}}
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