Yes, I did. For example page 123:
Figure 5.7b shows a variation on the cascoded VAS suggested by Hawksford[4]. The intention is apparently to reduce the Vce variation on the VAS transistor Q1 by bootstrapping the cascode transistor Q2 from the emitter of Q1.
Clearly, he hasn't even read the article he referred to.
Figure 5.7b shows a variation on the cascoded VAS suggested by Hawksford[4]. The intention is apparently to reduce the Vce variation on the VAS transistor Q1 by bootstrapping the cascode transistor Q2 from the emitter of Q1.
Clearly, he hasn't even read the article he referred to.
Jan,
I am having a problem with your web site. Clicking on an article does not open an article. I tried Firefox and IE.
Jim
I am having a problem with your web site. Clicking on an article does not open an article. I tried Firefox and IE.
Jim
I have read some of Douglas books, and i've learned some interesting stuff...he offers some hints that you cant find elsewhere.
It lays here on my desk; I am reading it front to back (including the cover). I think it's great. Currently I am at page 369 🙂
Hi Jim,
Linear Audio is a printed publication, like a book. I call it a bookzine. The article abstracts on my website allow you to look at each article content to decide whether you want the bookzine.
jan didden
I have had the book for about 2 months.
I think its excellent - Edmonds point notwithstanding!
No nonsense, no b.s. (well, maybe a bit on the Hawksford Cascode) but just facts and solid engineering.
Thank you Doug!
I've also ordered Bob Coredell's book - I expect that will also be a zero b.s. event.
Thank you Bob!
I think its excellent - Edmonds point notwithstanding!
No nonsense, no b.s. (well, maybe a bit on the Hawksford Cascode) but just facts and solid engineering.
Thank you Doug!
I've also ordered Bob Coredell's book - I expect that will also be a zero b.s. event.
Thank you Bob!
4 out of 5 stars
Ray de Velder (customer reviews, September 23, 2010) :
An excellent introductory text for hobbiests [sic!!!].
Comprehensive description of the basics of small signal audio. Covers most audio small signal analogue design (no digital). Like all of Self's books, sensible, conservative and not adventurous. Not recommended for professional designers, but highly recommended for "enthusiasts."
Ray de Velder? What the heck.... who is this guy???
Ray de Velder (customer reviews, September 23, 2010) :
An excellent introductory text for hobbiests [sic!!!].
Comprehensive description of the basics of small signal audio. Covers most audio small signal analogue design (no digital). Like all of Self's books, sensible, conservative and not adventurous. Not recommended for professional designers, but highly recommended for "enthusiasts."
Ray de Velder? What the heck.... who is this guy???
i
Dunno..he appears to have written other reviews for Amazon on other science topics. Its either a prejudiced view or written by another guy who hasn't read the text and is unfamiliar with the specialised circuitry for audio industry contained. Such reviews are a waste of space, whatever your opinion of the work, IMO.😡
Last edited:
Hi Bob,
I did already read that, and that was the reason I started to Google this chap.
Regarding his comment on class-D, maybe there's some truth to that.
To figure that out I have to dig in the thesis of Karsten Nielsen*, a pdf of 75Mb!!!
(I've read once that certain modulation schemes do exhibit some inherent distortion, though not sure whether this applies to your examples of class-D, as I haven't received your book yet :-( )
Cheers,
E.
* ICEpower — Karsten Nielsen's PhD Thesis
I did already read that, and that was the reason I started to Google this chap.
Regarding his comment on class-D, maybe there's some truth to that.
To figure that out I have to dig in the thesis of Karsten Nielsen*, a pdf of 75Mb!!!
(I've read once that certain modulation schemes do exhibit some inherent distortion, though not sure whether this applies to your examples of class-D, as I haven't received your book yet :-( )
Cheers,
E.
* ICEpower — Karsten Nielsen's PhD Thesis
Hi Edmond,
Thanks. I'm really sorry to hear you have not received your book yet.
Yes, I'd sure like to know more about this guy's point, especially if it is credible. Although my four chapters on class D understandably were intended only to scratch the surface on class D (whole books are needed), I still would like to understand if I have overlooked something or if the guy just skimmed and didn't see the whole picture. There are many, many sources of distortion in class D, so if there is an inherent one that I have overlooked that exists even if class D is implemented with "perfect devices" it is important that that distortion be put into perspective compared to the real-world ones. It is also important to understand what class D modulators the distortions being referred to apply to.
Finally, he seems to suggest a technique for reducing these distortions, presumably apart from those I have mentioned and of course negative feedback. This I would also like to know about. The key for me is knowing what I need to revise or add in the second edition when that comes out in maybe two years.
Often we can learn a lot from criticism if it is well-founded.
Cheers,
Bob
Hi Bob,
>I'm really sorry to hear you have not received your book yet.
I've ordered your book via amazon.co.uk. That's why the delivery will take more time.
As for class-D, see my comment on 'your' thread.
Cheers,
E.
>I'm really sorry to hear you have not received your book yet.
I've ordered your book via amazon.co.uk. That's why the delivery will take more time.
As for class-D, see my comment on 'your' thread.
Cheers,
E.
Regarding D. Self's book and particularly when checking details on his website, there are continuing problems with the host.
Some weeks ago, soon after the opening of Ihan's thread for Bob Cordell's book, Doug Self confirmed troubles with, presumably, the management of site host Pipex. I know nothing of net workings but this is a right PITA for anyone needing site access. After then gaining access with "aqpl43.dsl.pipex.com" as alternative address, I recently found his home page menu throwing similar error messages when a link or submenu items was addressed.
For quite some hours now, access to the site is denied due to "bandwidth restrictions being exceeded"
Do others have this problem too and perhaps know the crux of the matter or even what may be helpful to get this valuable DIY resource fully functional? I assume, of course, that is indeed what Doug Self wants too.
Some weeks ago, soon after the opening of Ihan's thread for Bob Cordell's book, Doug Self confirmed troubles with, presumably, the management of site host Pipex. I know nothing of net workings but this is a right PITA for anyone needing site access. After then gaining access with "aqpl43.dsl.pipex.com" as alternative address, I recently found his home page menu throwing similar error messages when a link or submenu items was addressed.
For quite some hours now, access to the site is denied due to "bandwidth restrictions being exceeded"
Do others have this problem too and perhaps know the crux of the matter or even what may be helpful to get this valuable DIY resource fully functional? I assume, of course, that is indeed what Doug Self wants too.
- Status
- Not open for further replies.