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MERG
Members' Benefits |
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MERG
Technical
Bulletins are circulated or supplied for personal or club use only.
Commercial exploitation, re-publication, or re-copying is NOT PERMITTED
without the written consent of the Model Electronic Railway Group, and,
where practicable, the author. The use or misuse for the sale,
design, supply, process, installation, delivery, test, repair,
servicing, and alteration of the designs, instructions, computer code,
photographs, circuits, and any other information that appear on this
web site is entirely at the risk of the user or visitor to the web
site. The information is made available in good faith without warranty
of any kind strictly on the basis that no liability will attach to the
Model Electronic Railway Group (MERG), its officers and members. |
| Ref |
Description |
Date |
|
| A1/1 | A high frequency oscillator | Jul 1994 | |
| |
Construction & use of HF Oscillator to A1/1 | Jul 1994 | |
| A2/1 | A simple dirt buster | Feb 2001 | |
| A3/1 | Point motor capacitor discharge power packs | Aug 2000 | |
| A5/1 | Sustained Tail Lamps | Oct 1986 | |
| A6/1 | Point motors: types, operation & indication | Feb 1999 | |
| A6/2 | Comparative tests of three Motor-driven Point Motors | Feb 2001 | |
| A6/3 | 'Tortoise' Point Motor - Data Sheet | Dec 1995 | |
| A7/1 | Reed switches | Jan 1995 | |
| A7/2 | Hall effect switches | Jan 1995 | |
| A7/3 | Magnets - use with Reed and Hall Effect Switches | Jan 1995 | |
| A7/4 | Hall effect switch as Train-on-Track Indicator | Dec 1998 | |
| A8/1 | Fast recharge capacitor discharge unit | Jun 1995 | |
| A9/1 | Capacitor discharge units using transistors (Issue 2) | Jun 1995 | |
| A10/1 | Light Emitting Diodes (LEDs) | Jan 1998 | |
| A11/1 | Twinkling gas lamps (Use this link to download a free sample) | Sep 1996 | |
| A11/2 | Twinkling gas lamps - the PCB, assembly & other applications | Feb 1998 | |
| A11/3 | Flaming Hot Air Balloons, another use for twinklers | Feb 2002 | |
| A12/1 | Motorised turntable control unit(see also A17/1) | Sep 1993 | |
| A13/1 | Resistance soldering - a unit design | Dec 1998 | |
| A14/1 | A Measured Pulse capacitor discharge unit | Nov 1993 | |
| A15/1 | Meters - in model railway service | Nov 1999 | |
| A15/2 | Meters - interpreting the readings | Jan 1995 | |
| A15/5 | Connecting Meters to a Pentroller | Aug 2000 | |
| A16/1 | The 'Heiniken' track cleaner | Jul 1995 | |
| A16/2 | The 'Flying banana' motored track cleaner | Sep 2001 | |
| A17/1 | Turntable Operation using SCRs (see also A12/1) | Jul 1995 | |
| A17/2 | Turntable indexing using an Infrared photoreflective sensor | Dec 2003 | |
| A18/1 | Welding Arc Simulator (using CMOS) | Dec 1995 | |
| A19/1 | High Frequency Train Lighting (and Train-on-Track Indication) | Jul 1996 | |
| A19/2 | A High Quality Sine Wave generator | Aug 1999 | |
| A20/1 | The MERG Simple Shuttle (Demonstration track) (Issue 2) | Aug 1997 | |
| A21/1 | Low Cost Current Display using a LED bargraph | Nov 1996 | |
| A23/1 | An Overload protected Controller Output stage | Sep 1996 | |
| A24/1 | Road Traffic Lights sequencer | Oct 1996 | |
| A25/1 | A Touch Switch for Control panels | Nov 1996 | |
| A26/1 | Servo Motor Driver (applied to loco water crane swing in & out!) | Dec 1996 | |
| A27/1 | Digital Clock Modules - 'make time go faster' | May 1997 | |
| A28/1 | In-Plug Power Supplies and their modification | Sep 1997 | |
| A29/1 | Single Wire Point Motor Switching Unit | Jan 1998 | |
| A30/1 | Matrix Operation of Point Motors | May 1998 | |
| A31/1 | Matrix Control for Point Motors | May 1998 | |
| A32/1 | A Fast Analogue Clock | Aug 2000 | |
| A32/2 | An Analogue Scale Time Clock | Aug 2000 | |
| A33/1 | Section Isolating Switch with Isolation and Occupation Indication | Feb 2003 | |
| A33/2 | Pulse generator for Isolated/occupied indication | Aug 1999 | |
| A34/1 | Development of a Dual Point Motor (Solenoid type)Driver | Aug 1999 | |
| A35/1 | Instrumentation for a 7 1/4" Gauge Battery Loco | May 2001 | |
| A36/1 | The Faller Road System - Introduction | Mar 2003 | |
| A36/2 | The Faller Road System - Route Selection and Parking | Oct 2004 | |
| Ref | Description | Date | |
| B1/1 | Preferred Values for electronic components | ||
| B2/1 | Resistor colour coding | ||
| B4/1 | A Summary of Op Amps | Jul 1996 | |
| Ref | Description | Date | |
| CC1/1 | ZERO-1 Command link | Feb 1998 | |
| CC1/2 | ZERO-1 Slave controller unit - including modification for double heading | Feb 1998 | |
| CC1/3 | ZERO-1 Slave controller (operation & modifications) | Jan 2001 | |
| CC1/5 | ZERO-1 Display console & module (MicroMimic/Phase 3) | Jan 2000 | |
| CC1/6 | ZERO-1 Point accessory module amplifier | Apr 1990 | |
| CC1/7 | ZERO-1 MicroMimic console - battery & inspection | Nov 1998 | |
| CC1/8 | ZERO-1 Loco module - a quick look | Dec 1998 | |
| CC1/9 | ZERO-1 MicroMimic Display System (Mfrs. brochure plus comments) | May 1995 | |
| CC1/10 | ZERO-1 Loco module coding chart | Jan 1999 | |
| CC1/12 | ZERO-1 Master Controller Replacement Keyboard (Kit instructions) | Sep 1998 | |
| CC1/14 | ZERO-1 Accessory Module R956 (Technical description and schematic) PB003 | Oct 1998 | |
| CC1/15 | ZERO-1 Slave Cable Buffer (Slave connections at over 2 metres) PB001 | Oct 1998 | |
| CC1/17 | ZERO-1 Modification of AC locos for Zero-1 operation PB002 | May 1998 | |
| CC1/18 | ZERO-1 Loco module current booster PB004 | Jan 2000 | |
| CC1/20 | ZERO-1 Stabilised Power Booster PB005 | Oct 1998 | |
| CC1/22 | ZERO-1 Accessory Module Extender | Oct 1998 | |
| CC1/23 | Coding ZTC Loco Modules using ZERO-1 Controllers (Hornby and H&M) | Feb 2000 | |
| References to 'PB00x' are to Hornby Product Briefs on which the TB is based, | |||
| CC2/1 | The Interlocker System (Computer Control of Model Railways) | Jul 1998 | |
| CC2/2 | The Interlocker System - the Hardware (Issue 3) | Jul 1998 | |
| CC2/6 | The Signalman System (Peter J. Day M508) | Jul 1995 | |
| CC2/11 | Computer Control in the Vale (Pendon Museum) | May 1995 | |
| CC3/1 | The I2C Interfacing system and its relevance to Model Railways | Dec 1998 | |
| CC4/1 | Command Control Route Indication | Aug 1999 | |
| CC4/2 | Command Control Train on Track Indication using MERG TOTIs and Power supply | Aug 1999 | |
| CC5/1 | The Airfix Multiple Train Control System | Aug 2000 | |
| CC21/1 | Route Setting using a Microcontroller | Aug 1996 | |
| CC22/1 | Computer-controlled Fiddle Yard project | Jul 1996 | |
| CC23/1 | What you need to know to use the PIC Microprocessor | Aug 1997 | |
| CC23/2 | Programming a PIC Microprocessor | Aug 1997 | |
| CC24/1 | Computers and Model Railways - an Overview | Oct 1997 | |
| Ref |
Description |
Date |
|
| DCC1/1 | Getting into DCC - a review of several commercial systems | Jan 1999 | |
| DCC2/1 | Introduction to NMRA Digital Command Control | Jan 2001 | |
| DCC2/2 | NMRA Decoder Configuration Variables (CVs) for ZTC / Lenz / Digitrax | Jan 2001 | |
| DCC3/1 | Building a DCC decoder for N gauge | Mar 1998 | |
| DCC11/03 | MERG DCC handset HS2 (Rev B): Technical description and use | Oct 2003 | |
| DCC11/11 | MERG DCC Accessory System: Overview, & Testing Assembled Kits | Oct 2003 | |
| DCC11/12 | The MERG DCC Accessory Encoder (Version 2B) | Oct 2003 | |
| DCC11/13 | The MERG DCC Pulsed Output Accessory Decoder (Version 2B) | Oct 2003 | |
| DCC11/14 | The MERG DCC Accessory Decoder Version 3B - Steady State outputs. | Feb 2004 | |
| Ref | Description | Date | |
| G1/1 | Transistors | Mar 2001 | |
| G2/1 | Relays - updated | Apr 2001 | |
| G2/3 | Latching Relays (and use for vehicle directional lighting) | May 2001 | |
| G5/1 | Microprocessors and model railways - updated | Apr 2001 | |
| G6/1 | Computer interfacing (Parts 1 & 2) | Feb 2001 | |
| G7/1 | Multiplexing | May 2001 | |
| G8/1 | A practical introduction to logic circuits | Oct 1985 | |
| G9/1 | A loco controller using the Sinclair Spectrum with postscript | Jan 2001 | |
| G10/1 | Sound and model railways | May 2000 | |
| G12/1 | Diode - FET logic - a new family ? | Jan 1989 | |
| G13/1 | A novel approach to layout wiring diagrams | May 2000 | |
| G14/1 | The on-board controller | Feb 1992 | |
| G15/1 | Loco controller using the Centronics interface | Feb 1992 | |
| G16/0 | Remote Panel Control(RPC) System - Progress Report No. 1 | Aug 1995 | |
| G16/1 | Remote Panel Control(RPC) System - Progress Report No. 2 | Dec 1995 | |
| G16/xx | RPC System - The Nottingham Exhibition report (RPC's first public outing) | Dec 1995 | |
| G16/2 | RPC System - Index to bulletins G16/3 - G16/24 | Feb 1999 | |
| G16/3 | RPC System - System Overview | Mar 1996 | |
| G16/4 | RPC System - Interface Specification | Nov 2001 | |
| G16/5 | RPC System - RPI Remote Panel Interface | Nov 2001 | |
| G16/6 | RPC System - DPR Module (8 Relay switching) | Feb 1997 | |
| G16/7 | RPC System - SR04 Module (32 bit O/C Digital O/P) | Dec 2002 | |
| G16/8 | RPC System - FTC Floating Track Circuit Module (8 track circuits) | May 1997 | |
| G16/12 | RPC System - RTC Train Speed Controller | Jan 1996 | |
| G16/13 | RPC System - PMD1 Solenoid Point Motor Driver (see G16/26 for On-board DPDT relay module) | Mar 2003 | |
| G16/14 | RPC System - PMD2 Slow-action Point Motor Driver | Jun 1999 | |
| G16/15 | RPC System - PMS2 Slow-action Point Motor Slave | Jun 1999 | |
| G16/16 | RPC System - SD4 Multi-aspect Colour Light Signal Driver | Jun 1999 | |
| G16/18 | RPC System - RSA RS232/RS485 Adaptor | Sep 1999 | |
| G16/19 | RPC System - SRI4 32 bit shift register logic input module | Feb 1999 | |
| G16/21 | RPC System - Alternative Uses (non-computer applications) | Jul 1998 | |
| G16/22 | RPC System - Serial/Shift register techniques (A general description but with special reference to the RPC system) | Feb 1999 | |
| G16/23 | RPC System - PTP Point to Point data transfer "Multiplexing put into practice" | Feb 1999 | |
| G16/24 | RPC System - RSE Remote Stack Extension system - to extend any RPC module stack | Nov 1999 | |
| G16/25 | RPC System - RDD Remote Data Display | Oct 1999 | |
| G16/26 | RPC System - PMR1 Solenoid Point Motor/Relay driver with on board relay. | Mar 2003 | |
| G16/27 | RS232 - RS485 Buffer | Feb 2001 | |
| G16/51 | A Computer-controlled Throttle unit | Sep 2000 | |
| G16/55 | An introduction to Tcc (Train control centre) software | Apr 2004 | |
| G16/71 | Layout Wiring: a radically new approach | Sep 2000 | |
| G16/72 | Layout wiring Part 2: Assembling PtP and RPC kits: Installation and testing | Feb 2001 | |
| G16/72 | Layout wiring Part 2: Assembling PtP and RPC kits: Installation and testing | Feb 2001 | |
| G16/81 | RPC Application on 'Horton' | Apr 2005 | |
| G16/85 | Model Railway Computer Control Centre (MRCCC): Overview | Jul 2005 | |
| G16/86 | Model Railway Computer Control Centre (MRCCC): User Guide | Jul 2005 | |
| G16/87 | Computer Assisted Cab Control (CACC) | Mar 2006 | |
| G18/1 | CARLOS unveiled - Your Control Panel on your PC Screen | Nov 1999 | |
| G19/1 | Notes on the use of Memory Wire | Apr 1997 | |
| G19/2 | Memory Wire for Points Actuation - comparison of 'One Way' and 'Reversing' wire | Oct 1997 | |
| G20/1 | A simple voltage indicator | Aug 1998 | |
| G21/1 | A simple current overload trip | Jan 1999 | |
| G22/1 | A Memory wire Turnout Operating Unit - MWTOU | Dec 1998 | |
| G23/1 | Constant current driver for Memory wire | Feb 1999 | |
| G23/2 | Adjustable drive circuit for Memory wire | Dec 2000 | |
| G24/1 | Analogue Controllers for a G gauge Garden Railway | Nov 1999 | |
| G24/2 | Train servo amplifier Testing (as used for G24/1) | Dec 1999 | |
| G25/1 | Using the 555 timer | Jan 2000 | |
| G26/1 | A Moving Message Simulator | Feb 2001 | |
| G27/1 | Solid State Overload Protectors | Jun 2000 | |
| G28/1 | Diode Controlled Slow and Stop sections | Aug 2000 | |
| G30/1 | Lighten your layout with LEDs | Sep 2000 | |
|
|
||
| Ref | Description | Date |
| LC1/1 | Guidance for Cabling Model Railways | Feb.2006 |
| Ref | Description | Date | |
| P1/1 | Practical Guide to Crimping and Insulation Displacement Connectors (IDC) | Apr.2003 | |
| Ref | Description | Date | |
| R2/1 | Bibliography 1949-68 (Bibliographies are A5 format) | - | |
| R2/2 | Bibliography 1969 | - | |
| R2/3 | Bibliography 1970 | - | |
| R2/4 | Bibliography 1971 | - | |
| R2/5 | Bibliography 1972 | - | |
| R2/6 | Bibliography 1973 | - | |
| R2/7 | Bibliography 1974 | - | |
| R2/8 | Bibliography 1975 | - | |
| R2/9 | Bibliography 1976 | - | |
| R2/10 | Bibliography 1977 | - | |
| R2/11 | Bibliography 1978 | - | |
| R2/12 | Bibliography 1979 | - | |
| R2/13 | Bibliography 1980 | - | |
| R2/14 | Bibliography 1981 | - | |
| R3/2 | NMRA (US) Preliminary proposed revision to Electrical Standard S9 | - | |
| R3/3 | MERG recommendations for a code of practice | Jul 1979 | |
| R4/1 | Radio interference suppression | - | |
| R5/1 | Bibliography:'Electrical and Electronics' Series, NMRA Bulletin (US) | - | |
| R6/1 | Book List (Model Railway Electric/Electronic) | Nov 1998 | |
| R7/1 | Model Railway Electronics (Roger Amos magazine) Index, Issues 1-4 | Nov 1990 | |
| R8/1 | Model Railway Electronics (book - author Roger Amos) Index to Vols. 1,2 and later Combined Volume | Mar 1993 | |
| R9/1 | Model Railway Electronics - Index to Friberg books 1, 3 & 4. | Jun 2001 | |
| R9/2 | Model Railway Electronics - Index to Friberg book 2. | Jun 2001 | |
| R9/3 | Model Railway Electronics - Index to Friberg books 5 & 6. | Jun 2001 | |
| R10/1 | Book Index- A Practical Introduction to Surface Mount Devices, Paul King | Jan 2003 | |
| Ref |
Description |
Date |
|
| S1/1 | Wiring complex pointwork | Dec
2004 |
|
| S2/1 | ENtrance EXit (NX) Route switching | - | |
| S3/1 | MERG Train On Track Indicator (ToTI) (incorporating S10/1) | - | |
| S4/1 | NMRA dc 2-rail track circuiting system (with additional notes) | - | |
| S5/1 | Controllers, train control and the operator (in draft) | - | |
| S6/1 | Signal Operation and Automatic restoration | Jun 1998 | |
| S7/1 | Locomotive Isolated Detector | May 1995 | |
| S8/1 | Train Detection - report on meeting (talk and discussion) | - | |
| S9/1 | Transducers - or where is it? | Mar 1985 | |
| S9/2 | Appendix to S9/1 - Transducers | May 1986 | |
| S11/1 | I.R.I.S. - Independant Remotely Interlocked Section | Aug 1991 | |
| S12/1 | Four Aspect Signals - Multiplex operation over 1 or 2 wires | Feb 1995 | |
| S13/1 | The ENtrance EXit (NX) Panel - Prototype information | Jul 1996 | |
| S14/1 | Simple Colour Lights signals for two sections (uses reed switch detection) | Jul 1996 | |
| S15/1 | A Noise Resistant Bistable - includes use for reed switch operated 2-aspect signal | Jan 1998 | |
| S16/1 | 2-wire control for 4-aspect signals | Apr 1999 | |
| S17/1 | A Damped Motor for 2mm scale Semaphore Signals | Apr 1999 | |
| S18/1 | Electrical Interlocking of Points and Signals | Feb 2001 | |
| Ref | Description | Date | |
| T1/1X | Some new ac motors and thoughts thereon | - | |
| T2/1 | A fixed height pulse controller | Jun 1997 | |
| T3/1 | MERG MILLION controller | - | |
| T4/1 | The Walshaw variant of the MERG MILLION controller | - | |
| T5/1 | Motor control | Jun 1996 | |
| T6/1 | Closed loop motor control | Feb 1997 | |
| T7/1 | CMOS in model railway electronics | Dec 1996 | |
| T8/1 | Traction supply (draft only) | - | |
| T9/1 | 2-rail track circuits | Dec 1995 | |
| T9/2 | HYPOTRAC - a 2-rail circuit | - | |
| T11/1 | Jeumont Schneider high voltage track circuits (protoype information) | - | |
| T12/1 | An integrated controller using the LM317 | Jul 1999 | |
| T14/1 | Controlling dc permanent-magnet motors used in model locomotives | May 2001 | |
| T15/1 | A simple overload trip - theory | Dec 1996 | |
| T15/2 | A simple overload trip - construction | May 1990 | |
| T16/1 | A Linear controller with overload protection | Feb 1997 | |
| T17/1 | A single knob controller | Feb 1997 | |
| T18/1 | Wired and cordless controllers using joysticks | Dec 1991 | |
| T19/1 | A hybrid pulse-width modulated controller | Nov 1993 | |
| T20/1 | Diesels with "real engines" using a free motor | Jun 1999 | |
| T21/1 | Train-on-track indicator by comparator | Oct 1996 | |
| T21/2 | Train-on-track indicator by comparator (Assembly & Test Instructions) | Oct 1996 | |
| T21/4 | Dual Power Supply Module for T21/1 ToTIs, etc. (incl. Kit Instructions) | Jan 1997 | |
| T21/5 | Train-on-track indicator by comparator: version 3 | May 2006 | |
| T22/1 | Train-on-Track Indication using Reed or Hall Effect switches | Feb 1995 | |
| T23/1 | A Computer-compatible Pulse Controller | May 1996 | |
| T24/1 | DC Motor Control by Negative Resistance | Oct 1996 | |
| T25/1 | The Ultimate Track Circuit Detector ? | Mar 1998 | |
| T26/1 | Single Knob Walkaround Control | Aug 1998 | |
| T27/1 | A Pulsed Linear Controller | Jan 2000 | |
| T27/2 | A Timed-reset Current Trip | Jan 2000 | |
| T28/1 | Track-based Cab Control | Apr 2000 | |
| T29/1 | Train on track indication using a Flip Flop | Jan 2001 | |
| T30/1 | Yet another Train on track indication (YaToTi) | Nov 2001 | |
| T31/1 | A Fixed Width Pulse Controller (FWP) | Feb 2002 | |
| T32/1 | Reversed Linked Section Control (RLSC) | Apr 2002 | |
| T33/01 | The SuperBloc Concept and the BC3 Controller | Jun 2002 | |
| T33/02 | Block Control Philosophy | Dec 2002 | |
| T33/11 | SuperBloc BC3 Technical Description and Schematics | Jun 2003 | |
| T33/13 | SuperBloc Power Supplies | Jul 2003 | |
| T33/14 | SuperBloc Control of Turnouts/Points/Switches | Dec 2002 | |
| T33/15 | How to create a Macroblock 'Cookbook' for SuperBloc design. | Apr 2003 | |
| T33/16 | A Single Track End to End Layout for SuperBloc | Jul 2003 | |
| T33/17 | SuperBloc Control of a Fixed Twin Track Layout | Jul 2003 | |
| T33/18 | SuperBloc Controls for a Modular Layout | Jul 2003 | |
| T33/20 | SuperBloc Control of Signals - John Matthews and Bob McGregor | Dec 2002 | |