This is a shameless piece of self publicity so I'll keep it
short and to the point!
A long time ago I wrote a little book called "Electric
Motors". It was meant to deal with the practical
applications of a very wide range of motor types . It's run
to ten reprints and sold over 30,000 copies so someone has
found it useful !
I've recently updated it and added new sections
covering both VFD operation and semiconductor commutated
machines. It also covers motor operation on both European
and North American type single and three phase power
This second edition has reached the printing press
and is now available from Amazon and all the usual outlets
(ISBN 978 185486 133 7). The book carries my family name -
Jim Cox although for some strange reason Amazon list it as
the more formal V.J. Cox. If you find it useful there's
also a companion book "Electric Motors in the Home
Comments on these books would of course be
welcome - even if they are of the variety "don't buy this
book it's a piece of junk"!
AKA Jim Cox AKA V J.Cox
On Fri, 22 Jun 2007 08:19:03 -0500, Ignoramus26157
I have Jim's other book and it's a good one so I just bought the
second one. Another good book on motors is "Electric Motors and
Control Techniques" Try this link:
(Amazon.com product link shortened)82526526&sr=8-2
I think you would enjoy this book. It does have enough math in it to
help you figure out what a particular motor is going to behave like.
At least it is fairly on topic spam. I searched Amazon and came up with his
(Amazon.com product link shortened)82517670&sr-1
Amazon has your book listed as:
* Paperback: 133 pages
* Publisher: Trans-Atlantic Publications (October 1996)
* Language: English
* ISBN-10: 1854861336
* ISBN-13: 978-1854861337
* Product Dimensions: 8.2 x 5.6 x 0.4 inches
* Shipping Weight: 6.4 ounces
Now that didn't seem like the one you mentioned so I searched some more and
(Amazon.com product link shortened)82517944&sr=1-4
* Paperback: 134 pages
* Publisher: Special Interest Model Books; 2Rev Ed edition (December 14,
* ISBN-10: 1854862464
* ISBN-13: 978-1854862464
* Product Dimensions: 8.1 x 5.8 x 0.5 inches
* Shipping Weight: 8 ounces (View shipping rates and policies)
* Amazon.com Sales Rank: #1,383,202 in Books (See Bestsellers in Books)
(Publishers and authors: Improve Your Sales)
You gave an incorrect ISBN number. If you are going to spam, do it right ;)
Fair comment - to spam is bad enough - misleading
spam is unforgivable!
I can only plead that the post was idly generated
while on holiday in warmer climes and I looked up the wrong
The correct reference for the 2006 2Rev edition is :-
Some first edition copies are still circulating. The second
edition is easily identified by the prominent inclusion of a
Hitachi VFD in the new front cover illustration.
I am getting it corrected but the present
Amazon flyer still incorrectly shows the old disassembled
induction motor front cover.
On Fri, 22 Jun 2007 06:54:22 +0100, with neither quill nor qualm,
firstname.lastname@example.org quickly quoth:
I think all but Nick the Dick will find it on topic, as all of us use
electric motors in the shop.
They're not showing on Amazon yet. Only the 1996 version is listed.
Eureka! I checked under "v j cox" and found the new version under a
new ISBN 978-1854862464 with a new workshop practice number?!?
When are you going to make a preview available on Amazon so we can
compare it to the other interesting and pricy tome
( http://tinyurl.com/yorbte for a mere $150) I found during my search?
Stoop and you'll be stepped on; stand tall and you'll be shot at.
-- Carlos A. Urbizo
On Jun 21, 10:54 pm, email@example.com wrote:
I have not seen the book, but did find the following information.
Book Description: Special Interest Model Books. New This practical
workshop guide deals with the principles and characteristics of the
wide range of motors likely to be used in small engineering workshops.
The topics include: Speed control; Electric braking; Generators;
Installation; and Safety. Since the publication of the first edition,
the book has become a well-established reference source on how motors
behave and their applications. Over the years, a lot has happened in
the field of motor design. This 2nd edition contains updated
information about recent developments in motor types and their control
systems, including the installation of VFD (Variable Frequency Drive
Units). It also covers the operating differences between North
American and European power systems. From the Inside FlapWORKSHOP
PRACTICE SERIES from Special Interest Model Books 1. Hardening,
Tempering & Heat Treatment - Tubal Cain 2. Vertical Milling in the
Home Workshop - Arnold Throp 3. Screwcutting in the Lathe - Martin
Cleeve 4. Foundrywork for the Amateur - B.Terry Aspin 5. Milling
Operations in the Lathe - Tubal Cain 6. Measuring & Marking Metals -
Ivan Law 7. The Art of Welding - W.A.Vause 8. Sheet Metal Work -
R.E.Wakeford 9. Soldering & Brazing - Tubal Cain 10. Saws & Sawing -
Ian Bradley 11. Electroplating - J.Poyner 12. Drills, Taps & Dies -
Tubal Cain 13. Workshop Drawing - Tubal Cain 14. Making Small Workshop
Tools - Stan Bray 15. Workholding in the Lathe - Tubal Cain 16.
Electric Motors - Jim Cox 17. Gears & Gear Cutting - Ivan Law 18.
Basic Benchwork - Les Oldridge 19. Spring Design & Manufacture - Tubal
Cain 20. Metalwork & Machining Hints & Tips - Ian Bradley 21.
Adhesives & Sealants - David Lammas 22. Workshop Electrics - Alex
Weiss 23. Workshop Construction - !Jim Forrest & Peter Jennings 24.
Electric Motors in the Home Workshop - Jim Cox 25. The Backyard
Foundry - B.Terry Aspin 26. Home Workshop Hints & Tips Edited by Vic
Smeed 27. Spindles - Harprit Sandhu 28. Simple Workshop Devices -
Tubal Cain 29. CAD for Model Engineers - D.A.G.Brown 30. Workshop
Materials - Alex Weiss 31. Useful Workshop Tools - Stan Bray 32.
Unimat III Lathe Accessories - Bob Loader 33. Making Clocks - Stan
Bray 34. Lathework: A Complete Course - Harold Hall 35. Milling: A
Complete Course - Harold Hall 36. Photo Etching - Brian King 37.
Dividing - Harold Hall 16 Electric MotorsThis book deals with
principles and characteristicsof teh wide range of motor types likely
to be useful in small engineering workshop applications. It also
covers matters such as speed control, electric braking, generators,
installation and safety aspects - everything, in fact, of practical
value jto the small workshop user.In the years since the publication
of the first edition, the book has become a well established reference
source for users to dip into when more information is needed on how
motors behave both in standard usage and also in less common
applications.In this time a lot has happened in the field of motor
design. This second edition now contains updated information covering
both these later developments in motor types and their control
systems. A major section is devoted to the characteristics and
installation of Variable Frequency Drive units (VFDs). It also covers
the operating differences between North American and European power
systems.The author, Jim Cox, was Chief Engineer of a well-known
electronics company and spent his working life closely involved with
electronic and electro-mechanical equipment. He has been a keen model
engineer for many years and is well aware of both the needs of small
engineering workshops and the capability of their owners. He is also
known as a familiar contributor to Internet News Groups under his
pentagrid signature. See all Reviews. Bookseller Inventory # CBS-
On Jun 22, 6:54 am, firstname.lastname@example.org wrote:
I've been using your two books for years, but I hadn't but two and two
together and realised that you were the author. They're excellent
books; well done.
So where does "Pentagrid" come from?
On Fri, 22 Jun 2007 14:07:52 -0700, Christopher Tidy wrote:
I was brought up in the days when vacuum tubes with
fliaments were the norm and a pentagrid was a really exotic
state of the art new invention.
"Electric Motors" was written before I subscribed to
newsgroups. I chose to use a pseudonym because I felt that
contributions should be judged on their content rather than
on the spurious authority of an author.
The pentagrid (also known as the heptode) is, as the name implies, a tube
with five grids in addition to the cathode and the plate. It dates from the
1930's or before and was used primarily as a combination local
oscillator/mixer in radios. It was also used in early radars in a circuit
called the phantastron to add a range "step" to the display on an A-Scope.
The nearly ubiquitous "all American five" tube lineup for AM superhet
radios in the US included a 12BE6 pentagrid converter. Other tubes
were 12BA6 (IF amp), 12AV6 (detector and first audio amp), 50C5
(audio power output) and 35W4 full wave rectifier. The filament
voltages added up to 121 volts in series, so no transformer was
required to run off US line voltage.
These radios were so inexpensive to make that if they failed to work
at the end of the production line a ram came down and crushed the
defective unit tubes and all. I saw this in a Motorola factory near
Chicago in 1962.
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