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| View Original: | Active negative resistance definition.svg (338x271) | |||
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| Keywords: Active negative resistance definition.svg characteristic curves of an ordinary positive ohmic resistance OR black and an active resistor or negative linear resistance NLR <font color red >red</font> a type of negative resistance The ohmic resistance obeys Ohm's law; the current is proportional to the voltage <math>v iR\ </math> with a positive proportionality constant <math>R > 0</math> so its IV curve is a straight line through the origin with positive slope Linear negative resistance obeys Ohm's law but the proportionality constant is negative <math>R < 0</math> so it's IV curve is a straight line through the origin with negative slope Devices with negative linear resistance have both negative differential resistance and negative static resistance equal and constant <math>R \Delta v \over \Delta i v \over i < 0 \ </math> Negative linear resistance is created by amplifier circuits with positive feedback such as the negative impedance converter NLR circuits are widely used in op amp active filters because they can create transfer functions that positive resistances cannot 2013-06-16 14 54 14 own Chetvorno cc-zero Uploaded with UploadWizard Negative resistance Device current-voltage characteristics Ohm's law | ||||
