Basic Electronics for Model Railways
Provides a grounding in the basics – and some pointers on what you could do next.
Covers the practical application of electronics to model railways, showing how components are used to construct useful projects.
The workshop is not heavy on theory and is mostly supported by practical demonstrations.
Workshop contents
• Review of basic terms – voltage, current, resistance.
• Simple electrical calculations (e.g. voltage drop and motor current).
• Look at differences between AC and DC.
• Electro-magnetism (relays, solenoids, transformers).
• Identify electronic components (resistors, capacitors, diodes, etc.) a
• Reading a simple circuit diagram, recognising components and their connections.
• Make simple measurements with a multimeter.
• Stage-by-stage construction of a power supply (see the effect of diodes, capacitors, voltage regulators)

  Electronics 2

Provides further training to those who have attended the “Basic Electronics for Model Railways” workshop, or have some previous electronic knowledge.

Workshop contents

Digital signals
• How do we store numbers (e.g. inside a DCC decoder or inside the Servo4 module)
• How do we pass numbers (e.g. from a command station to a loco, CBUS, etc.)

Transistors
• How do transistors work.
• Using transistors as switches and operating high power devices.

Integrated Circuits
Demonstrations of popular ICs.
• Driving a 7-segment display
• LED chasers
• Route selection
• Power drivers, including motors
• Comparators (DCC TOTI)

555
How this very popular (and cheap) IC works and its three operating modes:
• Bistable – as in the shuttle
• Monostable – one shot timer as in the automatic lights kit
• Astable – as a LED flasher and a pulse generator

Want to join us?
You can get all the benefits of MERG activities and support by becoming a member.
Membership is open to all those aged 18 and over. The annual subscription is £16 per year. There is an initial joining fee of £5, so it costs £21 in the first year.
You can join online at http://www.merg.org.uk/joinform.php
Alternatively, contact us at wosag@merg.org.uk and we will send you on a membership form

Free book

Want to find out a bit more about electronics?

Then go to our website at www.merg.org.uk and you can download a free book called “Electronics for Model Railways”
It is in two sections and the contents of each part are:


Part A
Chapter 1 – Basic electronics . . . . . . . . . . . 6
Chapter 2 – Loco controllers . . . . . . . . . . . 35
Chapter 3 – Layout wiring . . . . . . . . . . . . . 49
Chapter 4 – Track wiring . . . . . . . . . . . . . . 60
Chapter 5 – Voltage problems . . . . . . . . . . 78
Chapter 6 – Point wiring . . . . . . . . . . . . . . 87
Chapter 7 - Point motors & servos . . . . . . 99
Chapter 8 – Scenic lighting . . . . . . . . . . . . 123
Chapter 9 – Coach lighting . . . . . . . . . . . . 142
Chapter 10 - Adding sound . . . . . . . . . . . . 157
Chapter 11 - Track occupancy detectors . 184
Chapter 12 – R F I D . . . . . . . . . . . . . . . . . 202
Chapter 13 – Digital Command Control . . 212
Chapter 14 – CBUS . . . . . . . . . . . . . . . . . 240

Part B
Chapter 15 – Transistors, ICs & PICs . . . . . . 5
Chapter 16 - Interfacing techniques . . . . . . .16
Chapter 17 – Computers & model railways . 37
Chapter 18 – Assembling a tool kit . . . . . . . 70
Chapter 19 – Soldering . . . . . . . . . . . . . . . . 92
Chapter 20 – Using test equipment . . . . . . 108
Chapter 21 - Pocket Money Projects . . . . . 130
Chapter 22 – Abbreviations & Acronyms . . 194
Appendix - About M E R G . . . . . .. . . . . . . 200