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Digital Model Railway Control Systems
Digital model railway control systems are an alternative to control a layout and simplify the wiring and add more flexibility in operations. A number of control systems are available to operate locomotives on model railways. Analog systems where the speed and the direction of a train is controlled by adjusting the voltage on the track are still popular while they have recently given way to control systems based on computer technology. Digital model railway control system basics Some digital control systems provide the ability to independently control all aspects of operating a model railway using a minimum of wiring, the rails themselves can be the only wiring required. Other systems are wireless. Control is achieved by sending a digital signal as well as power down the rails or wirelessly. These digital signals can control all aspects of the model trains and accessories, including signals, Railroad switch, turnouts, lighting, level crossings, cranes, turntables, etc. Constant powe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hornby Railways
Hornby Hobbies Limited is a British-owned scale model manufacturing company which has been focused on rail transport modelling, model railways. Its roots date back to 1901 in Liverpool, when founder Frank Hornby received a patent for his Meccano construction toy. The first clockwork train was produced in 1920. In 1938, Hornby launched its first OO gauge train. In 1964, Hornby and Meccano were bought by their competitor, Tri-ang Railways, and sold when Tri-ang went into receivership. Hornby Railways became independent again in the 1980s, and became listed on the London Stock Exchange, but due to financial troubles reported in June 2017, became majority owned by British turnaround specialist Phoenix Asset Management. Hornby Hobbies bought model paint manufacturer Humbrol and their scale model kit subsidiary Airfix in 2007. The die-cast model car brand Corgi Toys, Corgi was added in 2008. Hornby's other brands include for model railways Bassett-Lowke, Jouef, Lima (models), Lima, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Model Railway
Railway modelling (UK, Australia, New Zealand, and Ireland) or model railroading (US and Canada) is a hobby in which rail transport systems are Model building, modelled at a reduced Scale (ratio), scale. The scale models include locomotives, rolling stock, streetcars, rail tracks, tracks, Railway signal, signalling, Crane (machine), cranes, and landscapes including: countryside, roads, bridges, buildings, vehicles, harbors, urban landscape, model figures, lights, and features such as rivers, hills, tunnels, and canyons. The earliest model railways were the 'carpet railways' in the 1840s. The first documented model railway was the Railway of the Prince Imperial (French: Chemin de fer du Prince Impérial) built in 1859 by Emperor Napoleon III for his then 3-year-old son, also Louis-Napoléon, Prince Imperial, Napoleon, in the grounds of the Château de Saint-Cloud in Paris. It was powered by clockwork and ran in a figure-of-eight. Electric trains appeared around the start of t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Märklin Digital
Märklin Digital was among the earlier digital model railway control systems. It was a comprehensive system including locomotive decoders (based on a Motorola chip), central control (Märklin 6020/6021), a computer interface (Märklin 6050), turnout decoders (Märklin 6083), digital relays (Märklin 6084) and feedback modules (Märklin s88/6088). The initial system was presented at the 1979 Nürnberg International Toy Fair, released in Europe in 1985 and the USA in 1986 under the name Digital H0. Operation Conventional analog control of model railways works by varying the track power and any locomotive on the track will respond by running at a speed roughly proportional to the power. For multiple trains, sidings must have a switch to isolate trains standing there and leave the track dead. For multiple controllers, the layout must be divided into sections isolated from each other and each with its own controller and current supply. All accessories such as signals and turnouts req ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Model Railroader
''Model Railroader'' (''MR'') is an American magazine about the hobby of model railroading. Founded in 1934 by Al C. Kalmbach, it is published monthly by Firecrown Media of Chattanooga, Tennessee. Commonly found on newsstands and in libraries, it promotes itself as the oldest magazine of its type in the United States, although it is the long-standing competitor to '' Railroad Model Craftsman,'' which - originally named ''The Model Craftsman'' - predates MR by one year. ''MR'' is considered to be a general-interest hobby magazine, appealing to a wide range of hobbyists, rather than specializing in a particular scale, or facet of the hobby (such as prototype operations or scratch building and kitbashing). ''Model Railroader'' covers a variety of scales and modeling techniques for engines, rolling stock, right-of-way, structures, and scenery. It reviews products including ready-to-run models as well as kits, tools and supplies. The magazine presents blueprints and photographs of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Receivership
In law, receivership is a situation in which an institution or enterprise is held by a receiver – a person "placed in the custodial responsibility for the property of others, including tangible and intangible assets and rights" – especially in cases where a company cannot meet its financial obligations and is said to be insolvent. The receivership remedy is an equitable remedy that emerged in the English chancery courts, where receivers were appointed to protect real property. Receiverships are also a remedy of last resort in litigation involving the conduct of executive agencies that fail to comply with constitutional or statutory obligations to populations that rely on those agencies for their basic human rights. Types of receivership Receiverships can be broadly divided into two types: *those related to insolvency or enforcement of a security interest *those where either: **a person is incapable of managing their affairs and a court has appointed a receiver to ma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Airfix
Airfix is a British brand and former manufacturing company which produced Injection moulding, injection-moulded plastic model, plastic scale model kits. In the UK, the name 'Airfix' has become practically synonymous with plastic models of this type, "they became a sort of generic name for any plastic, injection-moulded model kit". Airfix manufactured a wide range of plastic model products such as model car, cars, model aircraft, aircraft, model ship, ships, commercial vehicles, model military vehicle, military vehicles, rail transport modelling, railways, and model figure, figures. Founded in 1939, Airfix was owned by Humbrol from 1986 until the latter's financial collapse on 31 August 2006. Since 2007, both Humbrol and Airfix have been owned by Hornby Railways, Hornby. History Airfix was founded in 1939 by Hungarian businessman Nicholas Kove, initially to manufacture inflatable rubber toys. The brand name was selected so that it would be alphabetically the first in trade direct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silicon-controlled Rectifier
A silicon controlled rectifier or semiconductor controlled rectifier (SCR) is a four-layer solid-state current-controlling device. The name "silicon controlled rectifier" is General Electric's trade name for a type of thyristor. The principle of four-layer p–n–p–n switching was developed by Moll, Tanenbaum, Goldey, and Holonyak of Bell Laboratories in 1956. The practical demonstration of silicon controlled switching and detailed theoretical behavior of a device in agreement with the experimental results was presented by Dr Ian M. Mackintosh of Bell Laboratories in January 1958. The SCR was developed by a team of power engineers led by Gordon Hall and commercialized by Frank W. "Bill" Gutzwiller in 1957. Some sources define silicon-controlled rectifiers and thyristors as synonymous while other sources define silicon-controlled rectifiers as a proper subset of the set of thyristors; the latter being devices with at least four layers of alternating n- and p-type mate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRIAC
A TRIAC (triode for alternating current; also bidirectional triode thyristor or bilateral triode thyristor) is a three-terminal electronic component that conducts current in either direction when triggered. The term TRIAC is a genericized trademark. TRIACs are a subset of thyristors (analogous to a relay in that a small voltage and current can control a much larger voltage and current) and are related to silicon controlled rectifiers (SCRs). TRIACs differ from SCRs in that they allow current flow in both directions, whereas an SCR can only conduct current in a single direction. Most TRIACs can be triggered by applying either a positive or negative voltage to the gate (an SCR requires a positive voltage). Once triggered, SCRs and TRIACs continue to conduct, even if the gate current ceases, until the main current drops below a certain level called the holding current. Gate turn-off thyristors (GTOs) are similar to TRIACs but provide more control by turning off when the gate s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DPDT Switch
In electrical engineering, a switch is an electrical component that can disconnect or connect the conducting path in an electrical circuit, interrupting the electric current or diverting it from one conductor to another. The most common type of switch is an electromechanical device consisting of one or more sets of movable electrical contacts connected to external circuits. When a pair of contacts is touching current can pass between them, while when the contacts are separated no current can flow. Switches are made in many different configurations; they may have multiple sets of contacts controlled by the same knob or actuator, and the contacts may operate simultaneously, sequentially, or alternately. A switch may be operated manually, for example, a light switch or a keyboard button, or may function as a sensing element to sense the position of a machine part, liquid level, pressure, or temperature, such as a thermostat. Many specialized forms exist, such as the toggle switch ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pulse-width Modulation
Pulse-width modulation (PWM), also known as pulse-duration modulation (PDM) or pulse-length modulation (PLM), is any method of representing a signal as a rectangular wave with a varying duty cycle (and for some methods also a varying period). PWM is useful for controlling the average power or amplitude delivered by an electrical signal. The average value of voltage (and current) fed to the load is controlled by switching the supply between 0 and 100% at a rate faster than it takes the load to change significantly. The longer the switch is on, the higher the total power supplied to the load. Along with maximum power point tracking (MPPT), it is one of the primary methods of controlling the output of solar panels to that which can be utilized by a battery. PWM is particularly suited for running inertial loads such as motors, which are not as easily affected by this discrete switching. The goal of PWM is to control a load; however, the PWM switching frequency must be sele ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coaches Of The London, Midland And Scottish Railway
The London, Midland and Scottish Railway (LMS) inherited several styles of coaching stock from its constituents. Stock built by the LMS itself can be categorised into three separate periods, numbered I to III. Coaches inherited from pre-grouping companies Various types of coaches were inherited from pre-grouping companies. Ex-Glasgow and South Western Railway A 1914 seven-compartment side-corridor third built by Birmingham Railway Carriage and Wagon for the Glasgow and South Western Railway is preserved by the Scottish Railway Preservation Society at Falkirk.Harris (1976) Ex-Highland Railway From 1897 bogie stock was generally introduced for main line services on the Highland Railway. However, six-wheelers appeared as late as 1908. An example of a six-wheel composite coupé, No. 89, latterly in service stock, is preserved by the Scottish Railway Preservation Society at Falkirk.Harris (1976) Ex-Lancashire & Yorkshire Railway Many hundreds of carriages built for the L&Y ( ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LMS Stanier Class 5 4-6-0
The London, Midland and Scottish Railway (LMS) Stanier Class 5 4-6-0, commonly known as the Black Five, is a class of steam locomotives. It was introduced by William Stanier and built between 1934 and 1951. A total of 842 were built, initially numbered 4658-5499 then renumbered 44658-45499 by BR. Several members of the class survived to the last day of steam on British Railways in 1968, and eighteen are preserved. Origins The Black Five was a mixed-traffic locomotive, a "do-anything go-anywhere" type, designed by Stanier, who had previously been with the Great Western Railway, GWR. In his early LMS days, he designed his LMS Stanier Mogul, Stanier Mogul , experimenting with the GWR school of thought on locomotive design. A number of details in this design he would never use again, realising the superiority of details not used on the GWR. Stanier realised that there was a need for larger locomotives. These were to be the LMS version of the GWR 4900 Class, GWR Halls, but they wer ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
