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IEVref:131-12-20ID:
Language:enStatus: Standard
Term: differential inductance
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Symbol: Ld
Definition: for an inductive two-terminal element with terminals A and B, derivative of the total flux ΨAB between the terminals with respect to the electric current i in the element:

L d = d Ψ AB di MathType@MTEF@5@5@+= feaagKart1ev2aqatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr 4rNCHbGeaGqipu0Je9sqqrpepC0xbbL8F4rqqrFfpeea0xe9Lq=Jc9 vqaqpepm0xbba9pwe9Q8fs0=yqaqpepae9pg0FirpepeKkFr0xfr=x fr=xb9adbaqaaeGacaGaciaabmqaamaabaabaaGcbaGaamitamaaBa aaleaacaqGKbaabeaakiabg2da9maalaaabaGaciizaiaadI6adaWg aaWcbaGaaeyqaiaabkeaaeqaaaGcbaGaciizaiaadMgaaaaaaa@3E8E@

where the sign of the total flux is determined by taking the voltage, in the time integral defining it, as the difference of the electric potentials at A and B, and where the current is taken as positive if its direction is from A to B and negative in the opposite case

Note 1 to entry: For an ideal inductor, the differential inductance Ld is equal to its inductance L.


Publication date:2021-03
Source:
Replaces:131-12-20:2008-09
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