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Simple self-inductance meter

Simple self-inductance meter
Coils having self-inductance have a mystique for many electronics constructors and designers, particularly amateurs, that is quite unwarranted. Do the mathematics associated with these devices cause this feeling? It is, of course, true that measuring self-inductance is not as straightforward as resistance or capacitance. The most accurate method of measuring self-inductance involves inductive bridges (comparison, Maxwell-Wien, Hay, Owen or Campbell). Where accuracy is not that important, a PC may be used nowadays to measure self-inductance. This article describes a circuit and associated software that enable this to be done in a simple manner.
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