How Many Microhenrys in That Coil?

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How Many Microhenrys in That Coil?

Post by KirtB » Wed Jul 26, 2017 10:13 pm

How Many Microhenrys in That Coil?, December 1931/January 1932 Short Wave Craft

This is a nice short article covering the calculation of inductances for coils wound on cores and wire sizes. The author recognized that standard formulas, although concise and accurate, are sometimes difficult to work with when calculations for a large number of values is needed for a particular circuit design. To address the situation, he presents a handy nomograph, chart, and a table of typical values. A smartphone app, a spreadsheet, or a desktop computer program would be used today to calculate inductance values, number of turns, winding spacing, etc., but back when mechanical slide rules were the order of the …
Kirt Blattenberger

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