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| View Original: | Active negative resistance - voltage controlled.svg (962x955) | |||
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| Keywords: Active negative resistance - voltage controlled.svg 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 <font color red >red</font> region and is active produces power grey region <br /> <math>R v \over i \Delta v \over \Delta i < 0 \ </math> 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 V<sub>s</sub> 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 own Chetvorno 2013-07-22 Negative resistance Device current-voltage characteristics Cc-zero | ||||
