What determines un inductor's inductance?

Inductance depends on: number di turns squared (N²), core material permeability (μ), cross-sectional area (A), e length (l). L = μN²A/l. Ferrite o iron cores dramatically increase inductance compared un air cores.

Perche do inductors oppose current changes?

Changing current creates un changing magnetic field, which induces un voltage opposing il change (Lenz's law). This back-EMF resists current increase e sustains current during decrease. It's like inertia per electrical current—inductors resist any change in current flow.

Cos'e mutual inductance?

Quando two inductors share magnetic flux, changing current in one induces voltage in il other—this e mutual inductance, measured in henrys. Transformers usare this principle. Mutual inductance M relates un coupling coefficient k: M = k√(L₁L₂).

Perche do PCB traces hanno inductance?

Any conductor carrying current creates un magnetic field, giving it inductance. A straight wire ha circa 1 nH per mm length. At high frequencies (100+ MHz), even short traces act as significant inductors. This parasitic inductance affects signal integrity e deve be considered in RF design.

Induttanza Converter

Informazioni Inductance Conversione

Inductance measures un component's tendency un oppose changes in current da storing energy in un magnetic field. Quando current through un inductor changes, it generates un voltage that resists that change—this e electromagnetic induction, described da Faraday's law. Il induced voltage V = L(di/dt) e proportional un both inductance e rate di current change. This property makes inductors act like electrical inertia, smoothing current variations in power supplies e blocking high-frequency signals while passing DC.

Il SI unit e il henry (H), defined as il inductance producing 1 volt quando current changes at 1 ampere per secondo. Named after Joseph Henry who discovered self-inductance independently di Faraday. Inductors sono essential in switching power supplies (storing energy tra switching cycles), RF filters (frequency-selective circuits), transformers (coupling tra windings via mutual inductance), e motors (creating rotating magnetic fields).

Our converter handles all standard inductance units used in electronics, power systems, e electrical engineering.

Comuni Inductance Conversions

Da	A	Moltiplica Per
H	mH	1,000
mH	H	0.001
H	μH	10⁶
μH	H	10⁻⁶
mH	μH	1,000
μH	mH	0.001
μH	nH	1,000
nH	μH	0.001
H	nH	10⁹

Inductance Unita Riferimento

Henry (H) – Il SI unit, producing 1 volt quando current changes at 1 ampere per secondo. Named after American scientist Joseph Henry who discovered self-inductance in 1831. One henry e relatively large—achieving it requires many turns di wire around un high-permeability core. Large power transformers e filter chokes reach several henrys. Primary windings di mains transformers typically misurare 1-100 H.

Millihenry (mH) – 10⁻³ H, common in audio e power applications. Speaker crossover inductors: 0.1-10 mH. Power supply chokes e filter inductors: 1-100 mH. Relay coils e solenoids: 10-500 mH. Motor windings typically fall in this range. Wirewound inductors con ferrite o iron cores achieve millihenry values in practical sizes.

Microhenry (μH) – 10⁻⁶ H, il workhorse unit per power electronics e RF circuits. Switching power supply inductors: 1-1000 μH depending on frequency e power level. EMI filter chokes: 10-100 μH. AM radio antennas: 100-500 μH. Higher frequencies require lower inductance—MHz-range circuits usare single-digit un tens di microhenrys.

Nanohenry (nH) – 10⁻⁹ H, essential per high-frequency RF e microwave work. GHz-range matching networks usare 1-100 nH inductors. Chip inductors per wireless applications: 1-100 nH. Critically, every conductor ha parasitic inductance—circa 1 nH per millimetro di wire o trace length, which significantly impacts GHz circuit design.