User contributions for East of Borschov

26 November 2010

• 04:3704:37, 26 November 2010 diff hist +7 File:Vactrol time response chart.png →Summary: ref
• 04:3604:36, 26 November 2010 diff hist +180 File:Vactrol time response chart.png →Summary: ref
• 04:3404:34, 26 November 2010 diff hist −4 File:Vactrol distortion graph.png →Summary: correction
• 04:3304:33, 26 November 2010 diff hist +282 File:Vactrol distortion graph.png →Summary: correction

25 November 2010

• 16:1616:16, 25 November 2010 diff hist +504 N File:Vactrol distortion graph.png {{Information |Description={{en|1=Typical distortion of a LED-LDR optoisolator (vactrol) as a function of LED current. Adapted from charts and textual data in PerkinElmer (2001). ''[http://www.datasheetcatalog.org/datasheet/perkinelmer/VT500.pdf Photo
• 16:1116:11, 25 November 2010 diff hist +13 File:Vactrol time response chart.png →Summary: format
• 16:1016:10, 25 November 2010 diff hist +1,000 N File:Vactrol time response chart.png {{Information |Description={{en|1=Response of a LED-LDR optoisolator (vactrol) to a step change in LED current. Note that time scale is logarithmic! Blue trace: response of a vactrol that was kept dark long enough. It overshoots steady-state resistance,
• 06:3506:35, 25 November 2010 diff hist +936 N File:Idealized vactrol transfer function 2.PNG {{Information |Description={{en|1=Idealized transfer function of a LED-LDR optoisolator ("vactrol"). Green band approximated fluctuations due to memory effect at room temperature. Wider red band approximates effects of thermal drift, changes in optical co

23 November 2010

• 16:3216:32, 23 November 2010 diff hist +349 N Category:Jean Armand de Lestocq a really nice guy he was if only he could stat out of trouble
• 16:2916:29, 23 November 2010 diff hist +811 N File:I.G.Lestocq by Stenglin after Grooth's original.jpg {{Information |Description={{en|1=Portrait of Jean Armand (Ivan Germann in Russian sources) Lestocq. Engraved by Johan Stenglin after the original oil portrait by G-C. Grooth. Grooth painted his portrait not later than 1748, when Lestocq was banished from

18 November 2010

• 16:3616:36, 18 November 2010 diff hist 0 File:OEP series optocouples.jpg uploaded a new version of File:OEP series optocouples.jpg:
• 03:0203:02, 18 November 2010 diff hist −12 File:DeArmond Tremolo Control.jpg changed link to danformosa.com

17 November 2010

• 17:0117:01, 17 November 2010 diff hist −8 File:Vactrol Fender tremolo.PNG →Summary: one ma
• 16:5616:56, 17 November 2010 diff hist +98 File:Vactrol Fender tremolo.PNG →Summary: ec
• 16:5216:52, 17 November 2010 diff hist +1,524 N File:Vactrol Fender tremolo.PNG {{Information |Description={{en|1=Conceptual schematic of the 1963 Fender tremolo effect.<br>This is only a fragment explaining the concept!<br> Based on schematics for Fender AA763/AB763 amp which was marketed under the Vibrolux, Vibroverb, Showman etc.

16 November 2010

• 22:0222:02, 16 November 2010 diff hist +28 File:Light-dependent resistor equivalent.svg Category:Photoresistors
• 22:0122:01, 16 November 2010 diff hist +28 File:LDR equivalent schematic.png Category:Photoresistors
• 21:4721:47, 16 November 2010 diff hist 0 File:LDR equivalent schematic.png uploaded a new version of File:LDR equivalent schematic.png:
• 21:4521:45, 16 November 2010 diff hist +764 N File:LDR equivalent schematic.png {{Information |Description={{en|1={{en|1=Approximation schematic of a light-dependent (CdS or CdSe) resistor * Rd: dark (leakage) resistance (megaOhm range) * Rl: light (residual) resistance (hundred Ohm to a few kiloOhm) * Rv: idealized variable resistan
• 21:3121:31, 16 November 2010 diff hist +399 File:Vactrol VCA (Silonex).PNG →Summary: ref
• 21:2221:22, 16 November 2010 diff hist +702 N File:Vactrol VCA (Silonex).PNG {{Information |Description={{en|1=Linear control law VCA with vactrols as remote-control pots. Based on schematic in ''[http://www.silonex.com/audiohm/levelcontrol.html Audio level control with resistive optocouplers]''. ([http://www.silonex.com/audiohm
• 09:0009:00, 16 November 2010 diff hist +717 N File:Vactrol Inverse law VCA (split grounds).PNG {{Information |Description=Vactrol-based, remote-controlled variable gain amplifier with an inverse control law: V out = V in / (V c / Vref). Based on PerkinElmer (2001). ''[http://www.datasheetcatalog.org/datasheet/perkinelmer/VT500.pdf Photoconducti
• 08:5708:57, 16 November 2010 diff hist +831 N File:Vactrol AGC (Yushin).PNG {{Information |Description=Basic +20dB, automatic gain control cell - as used in 1970s telephone networks. Adapted from A. V. Yushin (1998, in Russian). Оптоэлектронные приборы и их зарубежные аналоги (Optoelectro

15 November 2010

• 12:3112:31, 15 November 2010 diff hist +372 N File:Vactrol types.PNG {{Information |Description=Types of vactrols by driver: incandescent bulb, neon lamp, LED |Source={{own}} |Date=Nov 2010 |Author= ~~~~ |Permission= |other_versions= }} Category:Vactrol
• 09:5109:51, 15 November 2010 diff hist +720 N File:Vactrol basic attenuators.PNG {{Information |Description=Three basic voltage divider circuits employing vactrols (photoresitor or photocell optocouplers): * Series * Shunt * Series-shunt |Source={{own}}. For an analysis of performance, see for example * Silonex (2002). ''[http://www.s

12 November 2010

• 16:5416:54, 12 November 2010 diff hist −6 File:OEP series optocouples.jpg Category:Vactrol
• 16:5416:54, 12 November 2010 diff hist +26 N Category:Vactrol Category:Opto-isolator
• 16:5316:53, 12 November 2010 diff hist 0 File:Light-dependent resistor equivalent.svg uploaded a new version of File:Light-dependent resistor equivalent.svg:
• 16:5216:52, 12 November 2010 diff hist +698 N File:Light-dependent resistor equivalent.svg {{Information |Description={{en|1=Approximation schematic of a light-dependent (CdS or CdSe) resistor * Rd: dark (leakage) resistance (megaOhm range) * Rl: light (residual) resistance (hundred Ohm to a few kiloOhm) * Rv: idealized variable resistance, inv

4 November 2010

• 22:0122:01, 4 November 2010 diff hist 0 File:Optoisolator topologies both.svg uploaded a new version of File:Optoisolator topologies both.svg:
• 15:2515:25, 4 November 2010 diff hist 0 File:Optoisolator topologies both.svg →Summary: not

3 November 2010

• 19:2919:29, 3 November 2010 diff hist +86 File:Optoisolator topologies both.svg →Summary: source
• 19:2319:23, 3 November 2010 diff hist +749 N File:Optoisolator topologies both.svg {{Information |Description={{en|1=Comparison of planar (top) and silicone dome (bottom) opto-isolator layout (both in DIP package for convenience). Based on drawings in: * planar: Forrest M. Mims (2000). [http://books.google.com/books?id=-sE7JVywygQC Mims

2 November 2010

• 19:5919:59, 2 November 2010 diff hist +2 File:OEP series optocouples.jpg →Summary: template
• 19:5919:59, 2 November 2010 diff hist +53 File:OEP series optocouples.jpg →Summary: template
• 19:5619:56, 2 November 2010 diff hist +1,052 N File:OEP series optocouples.jpg {{Information |Description={{en|1={{en}} Russian OEP series opto-isolators. These are living fossils made in 1992: incandescent lamp light source, cadmium sulphide sensors. Slow and inefficient, they make superb volume controls, guitar filters and synth V

30 October 2010

• 15:5615:56, 30 October 2010 diff hist +224 Commons:Village pump Which button is what?
• 11:3411:34, 30 October 2010 diff hist −5 File:Sisoy Veliky drawing post-1893 (turret).jpg "author" corrected

25 October 2010

• 12:4912:49, 25 October 2010 diff hist +478 Commons:Deletion requests/File:SochiGambusiaMonument.jpg Die ?! the thing was installed in June 2010.

23 September 2010

• 15:4215:42, 23 September 2010 diff hist +21 File:Wegener Expedition-1930 50.jpg Category:Aerosan
• 15:4215:42, 23 September 2010 diff hist −4 File:Wegener Expedition-1930 27.jpg Category:Aerosan
• 15:4215:42, 23 September 2010 diff hist +21 File:Wegener Expedition-1930 18.jpg Category:Aerosan
• 15:4115:41, 23 September 2010 diff hist +21 File:Wegener Expedition-1930 031.jpg Category:Aerosan
• 15:4115:41, 23 September 2010 diff hist +21 File:Wegener Expedition-1930 022.jpg Category:Aerosan

9 September 2010

• 16:1316:13, 9 September 2010 diff hist +324 N File:Cricket gourd by Qi Baishi.jpg {{Information |Description={{en|1=A pet cricket and cricket hous made of a gourd.}} |Source=http://www.beetles-for-sale.com/Cricket___gourd.html |Author=en:Qi Baishi (died 1957) |Date=1957 or earlier |Permission= |other_versions= }} {{PD-China}} [[Ca

28 August 2010

• 20:2420:24, 28 August 2010 diff hist +29 File:Esox hdm.JPG Category:Haus des Meeres

22 August 2010

• 14:2014:20, 22 August 2010 diff hist +126 File:Schloss Schoenbrunn August 2006 406.jpg Adding image note: en:Technisches Museum Wien

10 August 2010

• 21:0721:07, 10 August 2010 diff hist +616 N File:Sir Martin Bowes 1550.jpg {{Information |Description={{en|1=Portrait of Sir en:Martin Bowes (1497-1566), under-treasurer of Henry VIII, Lord Mayor of London.}} |Source=Challis, Christopher (1993). ''[http://books.google.com/books?id=Zz89AAAAIAAJ A New history of the Royal Min

4 August 2010

• 16:5116:51, 4 August 2010 diff hist +674 N File:Queen Elizabeth by Delaram crop.jpg {{Information |Description={{en|1=Fragment of an engraving of Queen Elizabeth by Francis Delaram (cropped, mirror flip). Library of Congress description: "The portrait of Queen Elizabeth from Camden's Historie, 1630, engraved by Francis Delaram after an
• 16:5016:50, 4 August 2010 diff hist +575 N File:Queen Elizabeth by Delaram full.jpg {{Information |Description={{en|1=Library of Congress description: "The portrait of Queen Elizabeth from Camden's Historie, 1630, engraved by Francis Delaram after an original by Nicholas Hilliard" (more at [http://www.loc.gov/rr/rarebook/catalog/drake/d