Use of serpentine in standards of inductance
Book details
- Title
- Use of serpentine in standards of inductance
- Publication year listed
- 1905
- Format
- Public domain eBook
- Reading access
- Free online reader; no registration required
- Source record
- View on Archive.org
About this book
Use of serpentine in standards of inductance
Year: 1905
In 1896 Wien described the construction of a convenient and permanent form of inductance standard, the spool being of serpentine. This form of inductance standard has since been manufactured by several of the German instrument makers, and the Bureau of Standards has purchased a considerable number of them. In attempting measurements of high precision on these coils discrepancies were found which were difficult to understand until investigation showed the serpentine to be slightly magnetic and its permeability variable, thus making the inductance of a coil a function of the current passing through it. A number of measurements on two coils wound on serpentine show the inductance to steadily increase with the current, while the inductan