Inductance (L) is the property of an electrical circuit whereby changes in current flowing in the circuit produces changes in the magnetic field such that a counter EMF is set up in that circuit or in neighboring ones. If the counter EMF is set up in the original circuit, it is called self-inductance and if it is set up in a nearby circuit then it is called mutual inductance.
The unit of inductance is the Henry (H) and is the value of inductance in which an induced EMF of one volt is produced when the inducing current is varied at the rate of one ampere per second. The henry is commonly sub-divided into several smaller units, the milliHenry abbreviated mH, the microHenry abbreviated µH, and the nanoHenry abbreviated nH.
Fixed Inductors
Fixed value inductors are now available with colour coded body. Most common type is the LGA series colour coded lead type (Resistor like) one which is readily available. It has excellent ferrite core material and has high Q and self resonant frequencies. These inductors are widely used in oscillator circuits. The value (in uH) of the inductor can be easily obtained using the colour code chart.
Fixed Inductor Colour Code
D.Mohankumar
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