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Fundamental Amplifier Techniques with Electron Tubes: Theory and practice with design methods for self construction [Englisch] [Gebundene Ausgabe]

Rudolf Moers
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1. Dezember 2010
For years, author Rudolf Moers searched for a textbook about electron tube amplifiers in order to learn how to design amplifiers using electron tubes, given that one has a reasonable knowledge of analog electronics. Since he never found such a book, he has written one himself in a style and content such as he would like to buy. To achieve this, he studied many radio books and did many measurements. This was followed by the organization of all the information, making many drawings and calculations and a lot of writing. By all this effort, a lot of knowledge about electron tube electronics, which was under the threat of being lost, will be retained. There are two aspects of a technical book that readers like to see, but which are often poorly presented. These two aspects are accuracy and a pleasing readability. Readers less skilled in mathematics and interested only in formulae that provide a valid ‘recipe’ like to skip the derivation of that ‘recipe’. In this book this is possible without prejudice to the readability of the story. These ‘recipes’ are framed at the end of formulae derivations. There are readers who are not satisfied with formulae that ‘fall from the sky’ without derivation. For these readers, a ‘recipe’ without substantiation is unsatisfactory and the application of the formulae will be accepted only when the derivation is shown. The formulae are proved in such a way that the reader can easily follow them through, thus a deep knowledge of mathematics is not necessary. The introduction in chapter 1 will be followed in chapter 2 by the principles of electron emission. Chapters 3, 4, 5 and 6 treat the diode, triode, tetrode and pentode respectively, each with a different framework, but only at middle frequencies and without discussing distortion and negative feedback. Chapter 7 treats the limits of audio frequencies and in chapter 8 are discussions about distortion and noise. Chapter 9 concerns negative feedback and in chapter 10 you can read how to build your own electron tube amplifier. Much of the theory is checked against practice, and design methods give the reader help to start with the design and construction of electron tubes amplifiers. The aim of the book is to give the reader useful knowledge about electron tube technology in the application of audio amplifiers, including their power supplies, for the design and DIY construction of these electron tube amplifiers. This is much more than just building an electron tube amplifier from a schematic made from the design from someone else: not only academic theory for scientific evidence, but also a theoretical explanation of how the practice works. No modern simulations, but because you first understand the circuit calculations, then you can work with your hands to build the circuit and last, but not least, if you have a multimeter, a signal generator and an oscilloscope, you can measure the circuit parameters yourself to see that theory and practice are very close. That is the aim, and makes this book a unique reference source.

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  • Gebundene Ausgabe: 834 Seiten
  • Verlag: Elektor International Media; Auflage: 1., Aufl. (1. Dezember 2010)
  • Sprache: Englisch
  • ISBN-10: 0905705939
  • ISBN-13: 978-0905705934
  • Größe und/oder Gewicht: 5 x 21 x 28,3 cm
  • Durchschnittliche Kundenbewertung: 4.0 von 5 Sternen  Alle Rezensionen anzeigen (1 Kundenrezension)
  • Amazon Bestseller-Rang: Nr. 186.006 in Fremdsprachige Bücher (Siehe Top 100 in Fremdsprachige Bücher)

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5 Sterne
3 Sterne
2 Sterne
1 Sterne
4.0 von 5 Sternen
4.0 von 5 Sternen
Die hilfreichsten Kundenrezensionen
4.0 von 5 Sternen Theorie und Praxis: Der Titel passt. 17. April 2012
Von Ernst P
Format:Gebundene Ausgabe|Verifizierter Kauf
Der Autor hat sich eine Menge Mühe gemacht und viel Material über Röhren zusammengetragen, ausprobiert und dokumentiert. Herzlichen Dank für diese Mühe. Das Buch hat A4 (!) Format und ist sehr dick und schwer. Es gibt viele Formeln (aber keine höhere Mathematik). Es geht um Audio Verstärker; Leute die Infos zu Gitarren/Bass Verstärkern suchen, werden hier nicht bedient (wobei die Schaltungsberechnungen da natürlich auch gelten - es sind halt andere Arbeitspunkte und z.T Schaltungen interessant). Schade ist, dass der Autor kein guter Schreiber ist und es klar zu erkennen ist, dass Englisch nicht seine Muttersprache ist. Teilweise sehr mühsam zu lesen, viele Wiederholungen ( Ein Lektor hätte dem Buch sehr gut getan - das war dem Verlag wohl zu teuer). Die 4 Sterne sind mir fast zu hoch - 3 wäre aber (für die Arbeit die der Autor da reingesteckt hat) doch zu wenig.
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Die hilfreichsten Kundenrezensionen auf Amazon.com (beta)
Amazon.com: 2.7 von 5 Sternen  3 Rezensionen
2 von 2 Kunden fanden die folgende Rezension hilfreich
3.0 von 5 Sternen Lots of ink, not much info 17. Juli 2012
Von Valve Nut - Veröffentlicht auf Amazon.com
Format:Gebundene Ausgabe
This book is huge. In terms of page area it is 10% larger than the Radio Designer's Handbook 4th edition, and yet, amazingly, it covers very little ground indeed. The material included is no more than basic-to-intermediate in level. You can get much, much more info from Morgan Jones and Menno Van der Veen's books, even though they are smaller and cheaper.

To give an idea of what is covered, it is probably more eye-opening to list some of the things this book does NOT cover:
Voltage regulators (except one for heaters)
Active loads / constant-current sources and sinks
Volume / balance / tone controls
Signal switching
Phono amplifiers / RIAA equalisation
Proper ground schemes (except for one page).

Most of this book is in fact taken up by unnecessarily large figures, fonts and line spacings. Oh, and not forgetting the PAGES AND PAGES OF DERIVATIONS. Most of the time you will find yourself sweeping through many consecutive pages of derivations with virtually no discussion or explanation of why or what is happening, and virtually no clearly articulated conclusion. This stuff should be put in an appendix.

Solid-state components are more-or-less banned by the author as being evil, or something. Even silicon rectifiers are off limits, except for heater and bias supplies where they are apparently OK!?

The translation from the original Dutch is pretty variable. Some passages are broken or even impossible to follow, and many common terms are given weird names like:
Anode Static Steepness (instead of transconductance)
Linear distortion (instead of phase distortion)
Phase Shifter (instead of phase splitter/inverter)
Basic Cathode Circuit (instead of common-cathode amplifier)
Cathodedyne (instead of cathodyne)
SRPP (he makes the rookie error of not knowing the difference between an SRPP and a half-mu stage. There are no SRPPs in this book)

In particular, I wanted to learn about the author's apparently original method for determining optimum ultra-linear tappings, but this section is either so badly written or translated that the method -if any- is impossible to determine.

Referencing is sometimes strange, most of it coming from Menno Van der Veen's books. Sometimes he attributes very old and well-known techniques to articles written by hobbyists in Glass Audio and the like!

This book does not seem to know who it is aimed at. It is far too dense and mathemetical for beginners, but the actual info is too basic for advanced readers. Altogether it feels like it has been written by someone who is himself a well-meaning, self-taught hobbyist who has collected all his knowledge -even the irrelevant stuff- in one place and wants to emulate an academic textbook, but does not have access to many original papers and books. Almost like an oversized undergraduate thesis. These things would all be forgivable in a low-cost self-published book, but I would not have expected a reputable house like Elektor to have agreed to publishing it.
1 von 1 Kunden fanden die folgende Rezension hilfreich
2.0 von 5 Sternen Very disappointing 30. Mai 2012
Von Charles Deluca - Veröffentlicht auf Amazon.com
Format:Gebundene Ausgabe|Verifizierter Kauf
Scatter shot organization, uneven depth, eye wearying typesetting, difficult translation. Altogether I was so put off I spent less than 10 minutes with it after paying nearly $100. Morgan Jones's book Valve Amplifiers, Third Edition is still the best modern reference in the field.
3.0 von 5 Sternen Unnecessariy heavy on maths and not overly practical, but overall a decent book 26. Januar 2014
Von MythBuster DownUnder - Veröffentlicht auf Amazon.com
Format:Gebundene Ausgabe|Verifizierter Kauf
After reading some unflattering reviews on Amazon I waited a few years for the price of this book to drop to a $30 something level and then bought it. Overall, a huge and heavy book, which makes its main weakness obvious - the author goes into pages and pages of mostly unnecessary maths and calculations, does not simplify anything. He treats the subject from a typically academic approach - the more maths, the better. So, if you maths skills aren't up to scratch, skip this book, you'll get lost, confused, irritated or all of the above.
This is not a book for builders of tube amps, but aimed, it seems, mostly at designers and those who want to understand the maths and physics of it all.

There are good sides of the book, too. The author isn't flippant, he doesn't dismiss this or ignore that, he covers almost everything. As some reviewers already pointed out, some practical issues and circuits aren't covered, true, so it is not the most practical or comprehensive of manuals (it doesn't claim to be anyway, it is after all called "Fundamental ..."), but what is there is analyzed inside and out, up and down, in all directions, in any possible way. I haven't seen so many calculations in any book on tube technology.

So, while the book is certainly worth its current low price (but not its original price of $100 or thereabouts) and while it isn't a total miss like some others, it will only suit mathematically and theoretically inclined readers.
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