glossary:glossary_b
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glossary:glossary_b [2018/11/21 10:45] – Bob Vetterlein | glossary:glossary_b [2020/09/14 14:43] – [Block Control] grovenor | ||
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- | Back EMF generally refers to the voltage that will appear across an inductor if the current is stopped suddenly | + | Back EMF generally refers |
[[: | [[: | ||
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===== Baud ===== | ===== Baud ===== | ||
- | Most people use baud to describe modem speeds in bits per second–but they are wrong. They may say a 9,600-bps modem transmits at 9,600 baud, but really | + | Baud in communications refers |
- | [[http:// | + | [[wp>Baud|Baud]] |
===== BC3 ===== | ===== BC3 ===== | ||
- | The BC3 is an automatic block control system otherwise known as SuperBloc (QV). It controls the speed of a model train depending on the occupation of the block ahead. If the block ahead is occupied the train will slow to a creep speed and stop at a designated point. Otherwise the train will accelerate to a preset speed. Manual control is also allowed for. Kits for the [[: | + | The BC3 is an automatic block control system otherwise known as SuperBloc (QV). It controls the speed of a model train depending on the occupation of the block ahead. If the block ahead is occupied the train will slow to a creep speed and stop at a designated point. Otherwise the train will accelerate to a preset speed. Manual control is also allowed for. Literature |
- | The BC3 kit is No38 Nos 39 and 40 are a test jig and a setting up kit. Kit instructions for 38 and 39 are available from MERG.\\ | + | although kits have been discontinued. |
- | [[https:// | + | [[: |
- | [[: | + | |
===== Bell signals ===== | ===== Bell signals ===== | ||
- | Bell Signals were used to convey information | + | Bell Signals are used as part of a block signalling protocol. |
- | [[http://www.signalbox.org/ | + | |
+ | The cadence of the Bell Signals were used to convey information. | ||
+ | |||
+ | Though there are some commonly used bell signals, different railways at different times have had their own signaling schemes. | ||
+ | \\ | ||
+ | [[https:// | ||
===== BGA ===== | ===== BGA ===== | ||
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- | Block control is the philosophy that a railway should be divided into blocks and that no train should normally be allowed to enter a block which is already occupied. This means that each block has a stop signal at which a train is required to wait if the block ahead is occupied. This will be set back 0.25 mile from the start of the next block. Further back there will be a distant signal which informs the driver that he needs to slow because the signal ahead is at stop.\\ | + | Block control is the philosophy that a railway should be divided into blocks and that no train should normally be allowed to enter a block which is already occupied. This means that each block has a stop signal at which a train is required to wait if the block ahead is occupied. Further back there will be a distant signal which informs the driver that he needs to slow because the signal ahead is at stop.\\ |
Modern electric signalling systems allow for more variation in slow signals with the a double yellow as a preliminary caution as well as the yellow caution to give two stages of slowing.\\ | Modern electric signalling systems allow for more variation in slow signals with the a double yellow as a preliminary caution as well as the yellow caution to give two stages of slowing.\\ | ||
[[http:// | [[http:// | ||
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- | Byte per second. In telecommunications and computing, bit rate (sometimes written bitrate or Rbit) is the number of bits that are conveyed or processed per unit of time. In digital multimedia, bit rate is the number of bits used per unit of time to represent a continuous medium such as audio or video. It is quantified using the bit per second (bit/s) unit or some derivative such as Mbit/ | + | Bits per second. In telecommunications and computing, bit rate (sometimes written bitrate or Rbit) is the number of bits that are conveyed or processed per unit of time. In digital multimedia, bit rate is the number of bits used per unit of time to represent a continuous medium such as audio or video. It is quantified using the bit per second (bit/s) unit or some derivative such as Mbit/ |
While often referred to as " | While often referred to as " | ||
glossary/glossary_b.txt · Last modified: 2022/10/10 21:55 by Bob Vetterlein