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N Gauge
N scale is a popular model railway scale. Depending upon the manufacturer (or country), the scale ranges from 1:148 to 1:160. In all cases, the ''gauge'' (the distance between the rails) is . The term N ''gauge'' refers to the track dimensions, but in the United Kingdom in particular British N gauge refers to a 1:148 scale with 1:160 () track gauge modelling. The terms N scale and N gauge are often inaccurately used interchangeably, as scale is defined as ratio or proportion of the model, and gauge only as a distance between rails. The scale 1:148 defines the rail-to-rail gauge equal to 9 mm exactly (at the cost of scale exactness), so when calculating the rail or track use 1:160 and for engines and car wheel base use 1:148. All rails are spaced 9 mm apart but the height can differ. Rail height (in thousandths of an inch) is expressed as a "code": thus, Code 55 rails are high while Code 80 rails have a height of . Common real railroad rails are at least tall and can b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bachmann Industries
Bachmann Industries (Bachmann Brothers, Inc.) is a Bermuda-registered, Chinese-owned company, globally headquartered in Hong Kong; specialising in model railroading. Founded in Philadelphia, Pennsylvania, the home of its North American headquarters, Bachmann is today part of the Kader group, whose model products are made at a Chinese Government joint-venture plant in Dongguan, China. In the past, Bachmann specialised in entry level train sets. In 1988, the Spectrum line of high-quality, detailed models was introduced to cater to more experienced hobbyists. In the past few years, Bachmann has retooled most of its product line, increasing the quality of its standard line products and discontinuing most of the Spectrum line. Many of the Spectrum products have been slightly modified and are now sold as higher-quality standard line models. Bachmann produces models in HO scale, N scale (1:160 and 1:148), On30, 00 gauge, HOn30 (H0 scale on N tracks) and G scale. They also own the Wil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Prototype
A prototype is an early sample, model, or release of a product built to test a concept or process. It is a term used in a variety of contexts, including semantics, design, electronics, and Software prototyping, software programming. A prototype is generally used to evaluate a new design to enhance precision by system analysts and users. Prototyping serves to provide specifications for a real, working system rather than a theoretical one. In some design workflow models, creating a prototype (a process sometimes called materialization) is the step between the Formal specification, formalization and the evaluation of an idea. A prototype can also mean a typical example of something such as in the use of the derivation 'prototypical'. This is a useful term in identifying objects, behaviours and concepts which are considered the accepted norm and is analogous with terms such as stereotypes and archetypes. The word ''wikt:prototype, prototype'' derives from the Greek language, Greek ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Digital Command Control
Digital Command Control (DCC) is a standard for a system to operate model railways digitally. When equipped with Digital Command Control, locomotives on the same electrical section of track can be independently controlled. The DCC protocol is defined by the Digital Command Control Working group of the National Model Railroad Association (NMRA). The NMRA has trademarked the term DCC, so while the term ''Digital Command Control'' is sometimes used to describe any digital model railway control system, strictly speaking it refers to NMRA DCC. History and Protocols A digital command control system was developed (under contract by Lenz Elektronik GmbH of Germany) in the 1980s for two German model railway manufacturers, Märklin and Arnold. The first digital decoders that Lenz produced appeared on the market early 1989 for Arnold (N) and mid 1990 for Märklin (Z, H0 and 1; Digital=). Märklin and Arnold exited the agreement over patent issues, but Lenz continued to develop the system. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Surface Mount
Surface-mount technology (SMT), originally called planar mounting, is a method in which the electrical components are mounted directly onto the surface of a printed circuit board (PCB). An electrical component mounted in this manner is referred to as a surface-mount device (SMD). In industry, this approach has largely replaced the through-hole technology construction method of fitting components, in large part because SMT allows for increased manufacturing automation which reduces cost and improves quality. It also allows for more components to fit on a given area of substrate. Both technologies can be used on the same board, with the through-hole technology often used for components not suitable for surface mounting such as large transformers and heat-sinked power semiconductors. An SMT component is usually smaller than its through-hole counterpart because it has either smaller leads or no leads at all. It may have short pins or leads of various styles, flat contacts, a matrix ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Direct Current
Direct current (DC) is one-directional flow of electric charge. An electrochemical cell is a prime example of DC power. Direct current may flow through a conductor such as a wire, but can also flow through semiconductors, insulators, or even through a vacuum as in electron or ion beams. The electric current flows in a constant direction, distinguishing it from alternating current (AC). A term formerly used for this type of current was galvanic current. The abbreviations ''AC'' and ''DC'' are often used to mean simply ''alternating'' and ''direct'', as when they modify ''current'' or ''voltage''. Direct current may be converted from an alternating current supply by use of a rectifier, which contains electronic elements (usually) or electromechanical elements (historically) that allow current to flow only in one direction. Direct current may be converted into alternating current via an inverter. Direct current has many uses, from the charging of batteries to large power sup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
NMRA
The National Model Railroad Association (NMRA) is a non-profit organization for those involved in the hobby or business of model railroading. It was founded in the United States in 1935, and is also active in Canada, Australia, the United Kingdom, and the Netherlands. It was previously headquartered in Indianapolis, Indiana, and was based in Chattanooga, Tennessee next to the Tennessee Valley Railroad Museum (TVRM) from 1982 to 2013 and has since relocated to Soddy Daisy. General The classifications listed below are from the A.A.R. Individual roads may use other designations. Illustrations show a typical member of the class detailed underneath the following a class description indicates a rare or obsolete type. Industry involvement The best-known activity of the NMRA is the defining of standards, and advisory documents known as Recommended Practices (RP), for model railroad equipment. Many standards defined by the NMRA are widely followed by the industry and modellers, including ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
MOROP
MOROP is a European association that federates national associations of railroad and model railroad enthusiasts. MOROP was founded in Genoa, Italy by Italo Briano in 1954, and now has its headquarters in Bern, Switzerland. In 2006, MOROP federated 22 national associations from 17 European countries, with a total of more than 30,000 members. The term "MOROP" is a portmanteau derived from "''MOdellbahn''" (German for "model railway") and EuROPe. The most important activity of MOROP is to define and maintain the ''Normen Europäischer Modellbahnen'' (NEM) ("European Standards for Railway Modelling") standards for model railroads. Since 1994, close ties have been established with the National Model Railroad Association (NMRA) which defines model railroad standards for the United States. For example, the NEM standards for Digital Command Control (DCC) have been defined by working with the NMRA. The NEM standards and other official documents of MOROP are published in French and German. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lms 4-6-0
LMS may refer to: Science and technology * Labeled magnitude scale, a scaling technique * Learning management system, education software * Least mean squares filter, producing least mean square error * Leiomyosarcoma, a rare form of cancer * Lenz microphthalmia syndrome * Computerised Library management system * Licentiate in Medicine and Surgery, a degree in India * LMS color space * Laboratory information management system (but usually LIMS) Organisations * Latin Mass Society of England and Wales * List of Marjan Šarec, a Slovenian political party * London Mathematical Society * London, Midland and Scottish Railway * London Missionary Society * ''League of Legends'' Master Series * Loving Municipal Schools Entertainment * Last man standing (gaming), a type of video game * LMS, family band of Denroy Morgan Other uses * Leamington Spa railway station code, England * Local Mitigation Strategy * Local Management of Schools, in the Education Reform Act 1988 The Education Refo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Minimum Gauge Railway
Minimum-gauge railways have a gauge of most commonly , , , , , or . The notion of minimum-gauge railways was originally developed by estate railways and the French company of Decauville for light railways, trench railways, mining, and farming applications. History The term was originally conceived by Sir Arthur Percival Heywood, who used it in 1874 to describe the principle behind his Duffield Bank Railway, specifically its gauge, distinguishing it from a "narrow gauge" railway. Having previously built a small railway of gauge, he settled on as the minimum that he felt was practical. The original text of Heywood's article defining minimum gauge railways is available online. In general, minimum-gauge railways maximize their loading gauge, where the dimension of the equipment is made as large as possible with respect to the track gauge while still providing enough stability to keep it from tipping over. Standard gauge railways have vehicles that are approximately twice, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
