Solenoid inductance & impedance calculation - Inductance calculation An introduction to the art of Solenoid inductance calculation By David W Knight (v 0.20, unfinished, 4th Feb. 2016) Open document spreadsheet files (calculations and macro routines referred to in the text): (transition from LF to HF behaviour) (accuracy and optimisation of various approximations for Nagaoka's coeff.) (methods for loop inductance, functions for Rosa's self-inductance coeff.) (functions for Rosa's original mutual inductance coeff. New reference function including the effect of pitch. Empirical function for large N asymptotic value). (Intermediate data reduction for mutual inductance coeff including the effect of pitch) (Final data reduction for mutual inductance coeff.
INDUCTANCE CALCULATIONS DOVER BOOKS ON ELECTRICAL ENGINEERING Download Inductance Calculations Dover Books On Electrical Engineering ebook PDF or Read Online books in PDF, EPUB, and Mobi Format. Click Download or Read Online button to INDUCTANCE CALCULATIONS DOVER BOOKS ON ELECTRICAL ENGINEERING book pdf for free now. Grover's 'Inductance Calculations'. Errata and supplementary data Errors and their corrections are shown below in the form of scanned pages marked in pencil.
In preparation) Rosa_v_summ.ods (comparison of methods, in preparation) (solenoid inductance calculations) Abstract: not yet written Formulae, calculation methods, utilities Numerical methods for inductance calculation, by Bob Weaver:. By Bob Weaver. 2009 (PDF) (Open Document spreadsheet). Accurate formulae for AC resistance and internal inductance of wires., Supplementary information and errata. Rodger Rosenbaum 2009.. H L Seneff, MSc. (3.8 MiB)., Robert Weaver Mar.
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Online references - Maxwell, Nagaoka, NBS (Documents in the public domain). J C Maxwell, Trans Roy. Edinburgh, Vol 26, 1872. [ Maxwell 1872 GMD]. E B Rosa, BBS Vol 2, No.2, p161-187 [ BS Sci. This is the original paper giving Rosa's method for solenoid inductance, including derivation of the external GMD for current-sheet segments. BBS Vol 4, No 2, 1908 [ BS Sci. Delphi xe5 serial communication protocols.
Tokyo, Vol 27, 6, 1909 (1.7 MiB). Note that all of Nagaoka's papers can be obtained from the. E B Rosa & F W Grover, revised 1916 3rd edition, 1948.
(15 MiB) - corrected version of BBS Vol. 1 (1911 & 1912) (same page numbering).
BBS, Vol 14, No 4, July 12, 1919 [ BS Sci. 320] (1 MiB). 537], 1926 (5.74 MiB).
F W Grover, NBS J. Research, Vol 1, 1928. F W Grover, JBS Vol 3. C Snow, JBS Vol 9. 1932, p419-426. NBS Circular 544, 1954. The following easy-to-use routine for calculating solenoid inductance by the Rosa-Nagaoka method has been added to the macro library in the spreadsheet.
The three functions called are also in the macro library and are discussed in the article. Note that the calculation is for external partial inductance only. And lead inductance should be added to the result Function LxRosa(byval h as double, D as double, N as double, dw as double, p as double) 'External inductance in henrys of a round-wire solenoid, using the Nagaoka-Rosa method.
V 1.00, 2016-01-11 'Calls functions W82W(), KMGO() and Rosaks90() 'h = coil length / m 'D = coil diameter / m 'N = number of turns 'dw = wire diameter / m 'p = winding pitch / m Dim kNagaoka as double, Lsheet as double, Rosacorr as double kNagaoka = W82W(D/h) Lsheet = 1e-7*pi()*pi()*D*D*N*N*kNagaoka/h Rosacorr = KMGO(N) + Rosaks90( p/dw, p/D, 0) LxRosa =Lsheet -2E-7*pi()*D*N*Rosacorr end function Material not yet transferred. The text below is in the process of being updated and extended. The information will at some point be transferred to the main solenoid inductance article above. Solenoid inductance calculation vs. Measurement: Using the techniques outlined in the previous sections, it is possible to calculate the low-frequency external inductance of solenoids to an accuracy of a few parts in 1000 using a micrometer or a good set of engineer's callipers and a personal computer. If a scientific calculator is used, the computation can be simplified by using one of the Wheeler unrestricted formulae with only a small loss of accuracy. In either case, the outcome is usually better than can be obtained using general-purpose measuring equipment.