PENTAGRID and ELECTRIC MOTORS
pent...@yahoo.com
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
systems.
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
Workshop".
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"!
Jim pentagrid
AKA Jim Cox AKA V J.Cox
Charles Ping
Jim
Your two books have taught me more than I ever imagined I'd ever need
to know about motors - and are, IMHO, essential reference works.
The capacitor & relay 3 phase motor starting setup described in "book
2" that I built over 5 years ago is still going strong on the old
Victoria mill - even after I sold the mill to a friend.
The new one will be bought next week when I walk past Foyles and I
hope that you get a fair share of the proceeds.
Thanks
Char;es
rack2000
and found it a very usefull and interesting book.
Must put your new addition of "Electric Motors" on my birthday list.
Chris.
<pent...@yahoo.com> wrote in message
news:1e1iu2mgccjmt.y...@40tude.net...
Steve
it very useful indeed.
Steve (Sheffield)
"rack2000" <rack...@rack2000.karoo.co.uk> wrote in message
news:6cednU1ZYqhpSubb...@eclipse.net.uk...
Cheshire Steve
pentag...@yahoo.com wrote:
Jim,
I have a copy of Electric Motors in the Home Workshop, and it was very
useful when it came to converting a 3 phase to work with a single
phase inverter. It was slightly less useful when trying to understand
the role of the field discharge resistor in the Ward Leonard drive
system I am trying to restore on a lathe, and seemed completely
deficient in explaining if there was any use for the most common
electric motor laying about in my workshop - the car starter motor.
Maybe your other book, or its new revision, covers a lot of this ? I
am also curious about electric motor systems for hybrid vehicles (or
even simple electric vehicles like milk-floats). Has you new book
stretched into this area ?.
Excellent work though - please keep on explaining the mysterious to
us. I wish you more success, and maybe this will encourage more people
to share their knowledge with us in the future.
Steve
pent...@yahoo.com
wrote:
SNIP
>
>
> 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.
SNIP
>
> Jim pentagrid
>
> AKA Jim Cox AKA V J.Cox
Hair shirt and deep apologies - the wrong ISBN nmber!!
The correct reference for the 2006 2Rev edition is :-
ISBN-13: 978-1854862464
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.
Jim
ivanhoew
i think their all great , i have all 3 ,and really enjoy them .
im having a bit of trouble undertstanding the rpc ,but im sure ill get
it !
regards
robert
--
ivanhoew
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Norman Willcox
If I bought your book would I be able to fathom how to connect the 2 motors
that I recovered from 2 unused development washing machines?
They are evidently capable of variable speed and reverse.
Regards,
Norman Willcox
PS a pity that I am not replying to Jim! Sorry!
pent...@yahoo.com
Not too sure of the etiquette in giving a Newsgroup reply to
this query but since it may be of general interest I'll try.
You should find enough information in "Electric Motors" to
identify the the type of motor that you have acquired. If they
are the single phase induction motor or commutator types you
should have no difficulty in finding how to connect and operate
them.
Later washing machines use electronically commutated motors.
These are also covered in the book but, unless you're an
electronic expert, they're only usable if you can find and sort
out the connections to the associated electronic controller.
If you live in the UK, both books are available at local
public libraries so a quick read should tell you whether the
books will solve your problem. The ISBN numbers are:-
Electric Motors 2nd edition 13 978 185486 246 4
Electric Motors Home workshop 978 185486 133 7
Jim
Bob Minchin
I have recently come across this
http://www.calenterprises.co.uk/speed.html
recently which may be of interest. I have no connection with the chap
and to be honest had dismissed it due to my feeling that washer motors
are generally open frame and therefore unsuitable for most of our swarf
generating hobbies. My preference is for TEFC 3 phase motors now that
fairly cheap inverters are available.
hth
Bob