Trains.com

Fundamentals of Power Electronics Books

1855 views
16 replies
1 rating 2 rating 3 rating 4 rating 5 rating
  • Member since
    April 2003
  • 305,205 posts
Fundamentals of Power Electronics Books
Posted by Anonymous on Monday, January 14, 2008 8:48 PM

Any good books with many examples that apply to G Scale? Not just G Scale books, others.

Toad (shocked FRIED in da Swamp)

  • Member since
    April 2003
  • 305,205 posts
Posted by Anonymous on Monday, January 14, 2008 10:36 PM

I've got a set of lessons that may zip down to a reasonable size to Email covering basics of DC, AC, etc.  Send me your Email address and I'll pass them on (do you have broad band?).   They don't apply to any particular electronics usage, but I'm not sure what would apply just to G scale trains anyway.  I've used them to better understand some simple circuits I've built to enhance my trains - like the one someone on this board or Bachmann's posted about a circuit to let battery power car lights but only if there's an interruption in track power.  They're also good if you don't understand yet why and how one would use a multimeter.     

Regards, Bob

rperego@qwest.net  

 

 

 

  • Member since
    February 2005
  • From: Peak District UK
  • 809 posts
Posted by cabbage on Tuesday, January 15, 2008 1:45 AM
This is what I use:

"Complete Book of Model Railway Electronics" by Roger Amos

The following is a cut and paste from amazon.

quote:

Synopsis
This reference work on model railway electronics introduces the novice to the subject through simple projects before going on to more advanced applications. The projects cover everything from basic train control and detection of trains by means of signalling systems, through to the automatic operation of the layout. The book includes information on: the use of electronics in model railways; controllers and their accessories, train detection, automatic signalling and point control; train lighting and sound effects; the tools required; how to make effective soldered joints; and fault finding. It also includes appendices which explain current, voltage, resistance and power, transistors and operational amplifiers.

unquote:

regards

ralph

The Home of Articulated Ugliness

  • Member since
    April 2003
  • 305,205 posts
Posted by Anonymous on Tuesday, January 15, 2008 11:30 AM

Turns out the lessons I have are on the web - www.openbookproject.net//electricCircuits/

The "Experiments" volume has info on using meters. 

The electronics forums are helpful for getting answers to questions.  For a project I'm working on to use a servo to rock a loco bell, I've also received help from folks on robotics forums. 

Have fun,

Bob 

 

 

 

  • Member since
    April 2003
  • 305,205 posts
Posted by Anonymous on Tuesday, January 15, 2008 4:04 PM

Thank you guys! Brush up and learn more!!!

Toad

  • Member since
    December 2006
  • From: Florissant, Missouri
  • 493 posts
Posted by hoofe116 on Tuesday, January 15, 2008 8:20 PM

TF:

Electronics is electronics; electricity is electricity, no matter what scale. Now, the biggest difference is between AC and DC. AC comes out of your wall, DC comes out of a battery. (Or a power supply that plugs into the wall.) All else is applicable to any scale. If you're wanting specific circuits, well so'm I. I've been surfing under 'board bending', 'robotics', and 'sound boards'. The idea is to find something that works for your needs and build it. Have to admit, I haven't found much directly useful.

(About five minutes later). I can't figure out how to post some of the choicer links I've found, so I'll go away, get 'em together and copy 'em out and mail you again.

Was that Cabbage that said to ask on the robotics forum? Geez, 2000hrs and my brain shuts off. Sigh [sigh] I have CRS real bad, man. Real bad. Eight Ball [8]

Les W.

  • Member since
    February 2005
  • From: Peak District UK
  • 809 posts
Posted by cabbage on Wednesday, January 16, 2008 1:44 AM
Hoofe,

No, it was not me! But, rather than drive yourself into the ground, go and order the Roger Amos book listed above from Amazon. It is only £12 and I have recouped more than that in circuit information and ideas from it.

regards

ralph

The Home of Articulated Ugliness

  • Member since
    April 2003
  • 305,205 posts
Posted by Anonymous on Wednesday, January 16, 2008 2:29 PM

I was the one who mentioned robotics, just as an example of using non-train oriented forums for help depending on your project.

BTW, if you don't own a multimeter yet, my advice is to spend a little more and get one with more features.  I just kicked myself for buying another meter because my old one wouldn't measure AC current, and passed on the slightly more expensive one that included a temperature sensor.   Just a few days later I found myself wanting to monitor the temperature of the voltage regulator in a circuit I built.

Have fun, Bob 

 

   

  • Member since
    December 2006
  • From: Florissant, Missouri
  • 493 posts
Posted by hoofe116 on Thursday, January 17, 2008 9:34 PM

Cabbage:

Please go take a look at the 'battery power' thread where I posted a bunch of questions.

It's very late and I'm having problems thinking, so if I come off terse that's why. These 'how to' train books tell me a whole lot that I already know about electronics. That's why I haven't risked my 30 US$ on one. I really appreciate your input, make no mistake. But for awhile I troubleshot airborne weapons delivery/nav computers to the component level for the air force. I know how to use a four-channel oscilloscope--or did, a good while back. A VOM holds no mysteries for me. I don't want 'experimenter circuits. If it had schematics for optical controllers, sound cards, flasher circuits and the like, I'd lay my money down right off. And, to repeat here what I posted there, I'm badly dated on modern terminology as it applies to this particular hobby. What I need is an overview, a block diagram, of how these various boards, sound card, motor controller, receiver and what they call 'decoders' all fit together. Then I need schematics to see if it's cheaper to build one or buy commercial. Certain chips might be hard to come by in less than lots of 1,000, for instance.

I've found a website that describes the use of a common tv IR controller to work a remote circuit. I can't figure out how to adapt that to RRing, and haven't done the simple obvious thing of posting on their boards to ask. Why? Complex answer.

The one thing I really like about this board, above all else, is that the level of warfare is nearly non-existent. I want to enjoy my RR, talk to/with others, and avoid the BS.

If I've in any way sounded offensive, I apologize in advance. It's really far too late for me to be trying to think. I always am pleased with yours and others inputs to my questions.

Les W. (Bedward bound!)

  • Member since
    February 2005
  • From: Peak District UK
  • 809 posts
Posted by cabbage on Friday, January 18, 2008 1:38 AM
I normally design liquid cooled mainframe computers, (I am actually Head of Design for a Swiss based Multinational). Can I adapt what I normally use to my railway? The answer has to be precious little...

The book I have mentioned above, while simplistic, covers: Locomotive block detection, Signalling, TTL and its applications to track route programming, Sound, Power supplies PWM PWAM and "classical", Inertia and Acceleration circuits.

All the information held within its covers is relavent to a Model Railway -and infact it normally sits by my bed along with books by Henry Greenly and LBSC.

I rank it that highly

I have tried IR control using Velleman kits, they do work well -but the range is more suited to Matthew (8) and his locos rather than Daddy -who uses Radio Control. The system uses a commercial RF modem capable of 32K at 422Mhz -more than enough to handle the 19.2k requred for DCC. The control program is GNU and I run on my Mac portable using X11. There are equivalent PC programs under GNU as well.

http://www.vellemanusa.com/us/enu/engine.php

That is the US Velleman site -I am normally more familar with the Belgian one, (but most of the kit stuff is there). My meter is a trusty AVO type 7 dating from the 1950's, my scope is a Farnel from the 1990's. My books on how to build locomotives date from the 1920's.

Go back to bed and get some sleep. I am typing this on the commuter train to London at 125mph at just after 4.30am...

regards

ralph

EDIT

Sorry -you can tell my mind is elsewhere. This is MERG -although MERG and I parted company a long time ago, they are still a good source of ideas and plans...

http://www.merg.org.uk/links.htm

The Home of Articulated Ugliness

  • Member since
    December 2006
  • From: Florissant, Missouri
  • 493 posts
Posted by hoofe116 on Friday, January 18, 2008 8:10 PM

Quite impressive credentials you have. I've gone to the sites you were kind enough to list, and launched an email at one unsuspecting soul in quest of detailed information.

The reason I don't want an Airwire or the like is, obviously, cost. Another reason is, most are rather complicated to learn, and I'm afraid I'm at the age where 'KISS' is my watchword. And my proposed layout will be small and simple--multi-engine operation is not contemplated.

I suppose a good deal more info might be gotten were I to join some of the other model RR boards and ask around. Or one of the robotics boards. I'm intent upon determining if it is feasible to build my own circuitry, given the reasons stated above, plus the ability to do it if I had a schematic. I spent the latter part of my working life as an XP machinist and tool & die maker, so much of my electronics knowledge is dated.

But, thank you again for your information.

Les W.

  • Member since
    February 2005
  • From: Peak District UK
  • 809 posts
Posted by cabbage on Friday, January 18, 2008 9:15 PM
Hoofe,

This is the power supply and PWM system that I use for my Heilmann loco.



The dynamo is turned by the steam motor and then the 2n3055 setup provides the stabilsed power supply that the two PWM boards feed from. A servo simply turns a potentiometer common to both NAND gates. I based to idea on one of the circuits from the book above. There is also Progressive Cab Contol listed in the book and block circuit working.

MERG are nice people, but I have moved up from OO and N to 16mm and Gauge 3. The circuits I have to use are more like "real" locomotive circuits... I now use 2n3055's where I used to use bc108's !!!

regards

ralph

The Home of Articulated Ugliness

  • Member since
    July 2006
  • 11 posts
Posted by Del Tapparo on Friday, January 18, 2008 9:42 PM

 hoofe116 wrote:
I've been surfing under 'board bending',

What in the world is "Board Bending" in the world of electronics?

  • Member since
    April 2003
  • 305,205 posts
Posted by Anonymous on Friday, January 18, 2008 9:48 PM

My poor ole head hurts now......

Toad

  • Member since
    December 2006
  • From: Florissant, Missouri
  • 493 posts
Posted by hoofe116 on Saturday, January 19, 2008 3:30 PM

Cabbage:

Hmm.... apparently you run live steam? I'll assume by 'dynamo' you have what we call 'generators'. Looks like an AC gen--er, dynamo? If so, why don't you put a bridge rectifier in in place of all those caps? On the other hand, if it's pulsed DC output from the dynamo, then it's obvious why you'd go with the 8 capacitors. It appears you have two motor controllers. And that you have track electric? Is that a correct assumption? I've copied the schematic, hope you have no objections.

In my case, the track will be dead, so to speak: but an ornament for keeping the wheels of the train in line. Wink [;)] Thus, I need a receiver circuit to connect to your circuit, and a transmitter to send my desires to the receiver. PWM is preferred for motor control, then?

Thank you for the input.

Les W.

  • Member since
    December 2006
  • From: Florissant, Missouri
  • 493 posts
Posted by hoofe116 on Saturday, January 19, 2008 3:38 PM
 Del Tapparo wrote:

 hoofe116 wrote:
I've been surfing under 'board bending',

What in the world is "Board Bending" in the world of electronics?

Del:

Well, it's apparently a generational term. In the Olden Days we called it 'homebrewing' in the ham radio hobby. You take a circuit board out of some programmed toy--the circuit board must have a microprocessor on it--and you figure out how it works. Then you proceed to rewire it to make it do something you want it to do. Most of the guys are musicians--or seem to be--so they make various sound boxes. I've always found musicians to be a tad ... otherworldly ... so I'm really sorta reluctant to get on a board and say, "Hey, about making my choo-choo train do stuff, like make a bell noise and a 'chuff-chuff' sound...."

Hope this helps.

Les W.

 

  • Member since
    February 2005
  • From: Peak District UK
  • 809 posts
Posted by cabbage on Sunday, January 20, 2008 2:50 AM
Hoofe,

I have at the moment only two live steam engines... The rest of my stable are battery electric and the track is as you say: "dead". The Heilmann is a steam electric and has a 4 cylinder steam motor turning a 6 pole windings 8 field windings dynamo of the Gramme Ring type. It has generated 9 Volts at 23A on test -it generates its "pulse" every 15 deg of rotation.

I had to cut all the steel laminations by hand and had to wind the armature by hand as well...

A Dynamo generates DC only and increases the magnetic flux of the field by transferring some of the generated current into the field windings. The reason that there are two PWM boards is that there is one in each power bogie -cooled by the fans there. In one bogie the fan draughts the boiler and in the other it cools the windings of the Dynamo.

Information about the Heilmann steam electric locos may be found here

http://www.dself.dsl.pipex.com/MUSEUM/LOCOLOCO/heilmann/heilmann.htm

This is my Home Page feel free to look around and examine or grab any of the information there, that is afterall what I wrote it for!!!

http://homepage.ntlworld.com/sheila.capella/cabbage/default.html

PWM is pulse width modulation ie chopping a Square wave
PWAM is pulse width amplitude modulation ie chopping a rising Sine wave

There is some debate (both technical and philosophical) as to wether PWM or PWAM or Classical power supplies are best. What follows is my own personal piece of "philosophy"...

(Philosophy = I cannot prove it with measurements!)

Three windings motors seem to work better with classical power supplies (at any speed)
Five (+) windings motors work with any of the above.
For LOW speed working I find that PWAM at low pulse rate is better than PWM at a high rate
For HIGH speed working I find that PWM at a high pulse rate is better.

The Heilmann being an express locomotive has PWM boards. It has actually exceeded a scale 100KPH at which point it slowed down and had to corner -very badly!!! (I am still learning to "drive" it...)

As to your RC problems just connect a servo to a "pot" and let it turn it, I use Futaba equipment -it comes with two servos and cost me about £50 for the setup. The same servo can also alter the pot for the speed of the chuffer board, (as it does on my sons 16mm scale locos TOBY and PERCY).

regards

ralph


EDIT

I suppose I should have put this link in at the start!

http://www.rogeramos.co.uk/index_m.htm

The Home of Articulated Ugliness

Search the Community

FREE EMAIL NEWSLETTER

Get the Garden Railways newsletter delivered to your inbox twice a month

By signing up you may also receive occasional reader surveys and special offers from Garden Railways magazine. Please view our privacy policy