Electrical Handbook for Model Railroads Vol 1 Basic Electrical Concepts Mallory

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Electrical Handbook for Model Railroads Vol 1 Basic Electrical Concepts Mallory
 
Electrical Handbook for Model Railroads Volume 1 Basic Electrical Concepts by Paul Mallery
Soft Cover
Copyright 1998 THIRD edition  
64 pages

CONTENTS
Chapter 1, Basic Electricity                                                                                                                           
Voltage, Resistance, Current, Power     Page 4
Chapter 2, Electrical Devices                                                                                                         
Switches, Resistors, LEDs, Fuses, Circuit Breakers, Meters, Transformers, Capacitors, Diodes, Transistors, Relays, Integrated Circuits         Page 9
Chapter 3, Motors                                                                                                                                 
DC, AC       Page 20
Chapter 4, Power Sources                                                                                              
Transformers, Rectifiers, Protection, Mounting, Meters, Filters     Page 23
Chapter 5, Locomotive Control                                                                                             
Direction, Speed, Pulse Power, Dirt Button, Protection    Page 28
Chapter 6, Common Rail                                                                                                    
Description, Advantages    Page 34
Chapter 7, Turnouts and Special Work                                                                                                                     
Power Feed, Switch Contacts, 3-Way Switches, Slip Switches, Crossings      Page 38
Chapter 8, Track Sections                                                                                                               
Purpose, Size, Designation, Gaps, Section Breaks, Block Joints, X-Sections   Page 45
Chapter 9, Basic Cab Control                                                                                                        
Principal, Simple 2-Cab System    Page 52
Chapter 10, Reversing Loops and Wyes                                                                              
Problems, Bridge Rectifier, X-Section    Page 56
Wire Table                                                                                                                                            
Gage, Diameter, Resistance     Page 59
Schematic Symbols                                                                                                                                    
Conductors, Devices      Page 59
Ratings of Resistors and Capacitors                                                                                           
Color Code, Standard Values     Page 62
Alphabetical Index   Page 62

This two-volume Handbook is intended as a reference manual of electrical information required by model railroaders. Volume I contains basic information needed on all layouts (such as Ohm's Law). Explanations of how individual electrical devices (such as transistors) operate are included in Vol. I. Volume II, although encompassing more basic information, primarily covers advanced aspects of the hobby, for example, signals and independent control of several locomotives. Emphasis in both volumes is heavily on methods which have proven effective, particularly those widely used. Special attention has been given to reliability. The first edition of this Electrical Handbook, 1955, covered all aspects, basic and advanced, in one volume and is counted as the first edition of both Vol. I and Vol. II. Because basics change more slowly than advanced subjects, in 1971 these two general areas were split apart primarily as a matter of economy to readers.
Although basics remain virtually unchanged over years, not so means of implementation. Selenium rectifiers took over completely for model RR DC power sources shortly after World War II but now have disappeared. Relays, once the backbone of logic circuits and detection on layouts, have been replaced in large measure by transistors and integrated circuits. The same is true of rheostats for speed control.
There are extensive cross-references by page number within Volume I and by figure number, chapter, or section to Volume II. References to Volume II will remain valid for any future edition of Volume II. The alphabetical index contained in this volume does not cover Volume II.
In the interest of preserving some history of the hobby and to give credit where credit is due, the earliest known publication or demonstration of an advance of an electrical nature in model railroading is cited. If any reader knows of an earlier reference, the author would appreciate being so informed. In the case of The Model RR Club, Inc., Union, NJ, any reference prior to 1972 uses its original name, Summit-New Providence HO RR Club. There are two major reasons why there are so many references to it in comparison with other clubs. One: The author has been able to observe their efforts on two different layouts starting in 1949. Two: Failures as well as successes can be reported.
Although a discussion of basic electricity seldom becomes involved in model versus prototype practice, when it does the assumption is made the prime objective of model railroaders is to duplicate appearance and operation of real railroads in the simplest, most effective, and least-expensive way feasible. For example model track circuits detect only cars and locomotives within a block, they do not guard against broken rails. Because language has a prototype too, railroad practice is followed whenever applicable rather than model aberrations. Nevertheless the latter are referenced.

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