what is negative inductance? 01 PUBLIC

At a fixed frequency, a negative inductance can be seen as a capacitor which presents the same impedance as an inductor but with opposite phase.

Simulate > Frequency Domain > Run Frequency-Domain Simulation

At a fixed frequency, a negative inductance can be seen as a capacitor which presents the same impedance as an inductor but with opposite phase.

Over a range of frequencies, a negative inductance is not generally directly physically realisable. However, it can be realised using a Negative Impedance Converter:

http://en.wikipedia.org/wiki/Negative_impedance_converter

Simulate > Frequency Domain > Run Frequency-Domain Simulation

Note that in the time domain the average voltage across the inductor climbs exponentially because with a negative inductance the first order LR time domain expression becomes:

Vo = Vi*exp(TL/R)

Simulate > Time Domain > Run Time-Domain Simulation

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