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Inductance Converter

Convert between different inductance units used in electronics and electrical engineering

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Common Conversions

Understanding Inductance

Inductance is the property of an electrical conductor by which a change in current in the conductor creates a voltage in both the conductor itself (self-inductance) and any nearby conductors (mutual inductance).

The SI unit of inductance is the henry (H), named after American scientist Joseph Henry. It is defined as the inductance of a closed circuit in which an electromotive force of one volt is produced when the electric current varies uniformly at a rate of one ampere per second:

L = V × t / I

where:

– L is the inductance in henries (H)
– V is the voltage in volts (V)
– I is the current in amperes (A)
– t is the time in seconds (s)

Inductance can also be defined in terms of magnetic flux linkage (Φ):

L = Φ / I

For a solenoid coil with N turns, area A, and length l, the inductance is approximately:

L = (μ₀ × μᵣ × N² × A) / l

where μ₀ is the permeability of free space and μᵣ is the relative permeability of the core material.

Common Inductor Values
1-100 nH
PCB traces, wire bonds
0.1-10 µH
RF chokes, SMD inductors
10-100 µH
Switching power supplies
0.1-10 mH
Audio filters, transformers
10-100 mH
Line filters, tuning coils
0.1-10 H
Large power inductors
10-100 H
Large audio chokes
1.5-3 H
Guitar pickup coils