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[SOLVED] Where can one buy a resistor with negative value?

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iVenki

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I was designing a circuit. I got negative resistance. Is this practical? I mean do you have negative resistance in shops? Where do we have such resistances?
 

Negative resistance is a theoretical construct. It describes a circuit having characteristics that are the inverse of that of a resistor. That is to say if you INCREASE the voltage to the device, the current through it DECREASES.
Frank
 

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