Inductance Calculations: Working Formulas and Tables (Anglais) Broché – 1 janvier 2009
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Ayant besoin de deux autres exemplaires pour mes collègues j'ai commandé une semaine aprés sur Barnes&nobles (même prix) histoire de voir le plus rapide et finalement lorsque le livre fut dispo sur Amazon je me suis empressé de le prendre deux semaines aprés...
Résultats des courses :
Amazon arrivé en 4 jours et livraison gratos donc au final moins cher
Dover arrivé en 3 semaines
Et le troisième ...ben je l'attends toujours après 1 mois et 2 semaines....
Quand au bouquin couvre tout les besoins que j'ai en matière de calcul d'inductance pour des systèmes de gros aimants. Ouvrage de référence à avoir dans sa librairie ingé.
Attention réservé à un public averti.
le contenu demande de sérieuse connaissance en électrotech et en anglais
et un peu de souvenirs de math
mais le top avec Nagaoka
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I read some of the other reviews on the book and found that some of them were complaining about having to use look-up tables and how the coil configurations were strange. First, this book addresses numerous configurations, many of which ARE quite common. Second, this book is meant to provide the user with very accurate approximation techniques and simple formulas for calculating self- and mutual inductance. It is not meant to provide analytical solutions for inductance. It provides methods that are definitely better than trying to use Neumann's integral, which usually involve elliptic integrals and power series (which may not even converge). My opinion is that if you need to use it that often, just code up the formulas and tables in MatLab or some other programming language.
One last point, if you work with spiral disc coils (sometimes called pancake coils) buy this book. Huge time saver and accurate. I ran calculations on an inductor and came within 1.5% of the inductance value I measured using a precision LCR meter (which isn't bad considering that it was a handmade coil whose dimensions I had to approximate from hand measurements).
This is a reference shelf classic for those concerned with inductance calculations. It is not a textbook, and it does not address design as such. All coils and configurations discussed are air core. There are no wire tables or discussion of insulation or winding styles. The crux is mathematical and computational.
Given the vintage of the book, all units are cgs and emu, e.g. the permeability of free space is unity. A Henry is always a Henry, but there is the occasional "abhenries per centimeter" laying about. This is a common hazard of foundational magnetics texts; they seemingly all predate the SI system. The field in general has been the most laggard in switching over. Paul's book is SI; only in the 21st century have new magnetics texts routinely used the 'new' system.
Conclusion: highly recommended if you are performing out-of-the-ordinary design, or are involved with the field academically. Few run-of-the-mill practitioners will find need for the "Mutual Inductance of Eccentric Circular Coils', or 'A Solenoid and a Coaxial Circular Filament. General Case, Circle Not in the End Plane.' However, this book is where I first ran across the useful Brooks Coil, so it is not entirely disconnected from everyday work. There is also the prescient 'Flat Spirals with Polygonal Turns' that eventually became a workhorse component in the RF portion of the microelectronics industry. Theory never goes bad, and on that basis the book is timeless.
It is essentially a practical book; although many of the equations for inductance are complicated, there is little explanation of how the equations were derived. If that had been included, the book would have been about three times as long (and costly), and many would have been put off by the advanced math.