File:Active negative resistance - voltage controlled.svg

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English: Current-voltage (IV) diagram of a "active" negative resistance, produced at the port of an amplifier with positive feedback. The curve has a straight line segment through the origin with negative slope -R, so applying a voltage v to the amplifier causes a proportional current i to flow out of the positive terminal, the opposite of an ordinary positive resistance. The device has both negative differential resistance (red region) and is active (produces power) (grey region):
Applying a large enough voltage of either polarity to it moves the amplifier into nonlinear regions of the curve, and if the voltage exceeds the amplifier power supply rails Vs the amplifier will saturate and the resistance will become positive. This type of negative resistance is found in feedback oscillators, negative impedance converters, and active filters.
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Source Own work
Author Chetvorno

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22 July 2013

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Date/TimeThumbnailDimensionsUserComment
current15:17, 4 May 2014Thumbnail for version as of 15:17, 4 May 2014963 × 955 (11 KB)ChetvornoMade negative differential resistance region of the curve red and used grey shading to label active region, to improve consistency with other diagrams.
20:05, 22 July 2013Thumbnail for version as of 20:05, 22 July 2013963 × 955 (10 KB)Chetvorno{{Information |Description ={{en|1=Current-voltage (''IV'') diagram of a linear negative resistance}} |Source ={{own}} |Author =Chetvorno |Date =July 22, 2013 |Permission = |other_versions = }} [[Cat...
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