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--- glossary:glossary_b [2020/09/14 14:55] – [Bus] grovenor
+++ glossary:glossary_b [2021/08/08 04:03] – Corrected the link to Wikipedia Wayne
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-Back EMF generally refers to the voltage generated by the rotation of a motor but also to the voltage that will appear across an inductor if the current is changed or stopped suddenly.\\
+Back Electromotive Force ([[wp>Electromotive_force|EMF]]) generally refers to the voltage generated by the rotation of a motor but also to the voltage that will appear across an inductor if the current is changed or stopped suddenly.\\
 [[:glossary:back_emf|Main article]]
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-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 about it is available from MERG - TBs T33/0-20.\\
+The BC3 is an automatic block control system otherwise known as SuperBloc (QV). It is a development of and compatible with BloNg (Block oriented N gauge). 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 about it is available from MERG - Technical Bulletins T33/01 to T33/28 although kits have been discontinued.\\
-although kits have been discontinued. The BC3 kit is No38 Nos 39 and 40 are a test jig and a setting up kit.
+[[:glossary:blong|Main article]]
-[[:glossary:blong|Blong]]
 ===== Bell signals =====
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 ===== BGA =====
 Ball Grid Array; a method of permitting a large number of connections in a smaller footprint for large scale Integrated Circuits.
-See https://en.wikipedia.org/wiki/Ball_grid_array
+See [[wp>Ball_grid_array|BGA]]
 ===== Bipolar =====
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-The Block Oriented N-Gauge (or "BloNg") system was a method for automatic block control developed originally for an exhibition layout by the South-West Area Group of the N-Gauge Society (now the Exeter N-Gauge Railway Modellers). It employed a controller per block, colloquially known as "the BloNg". The MERG superBloc system with its [[:kits:38|BC3]] controller resulted from a collaboration between that Group and the Oxford MRS, who also model in 00. The BC3 therefore now replaces "the BloNg", with which it is electrically compatible.
+The Block oriented N-Gauge (or "BloNg") system was a method for automatic block control developed originally for an exhibition layout by the South-West Area Group of the N-Gauge Society (now the Exeter N-Gauge Railway Modellers). It employed a controller per block, colloquially known as "the BloNg". The MERG superBloc system with its [[:kits:38|BC3]] controller resulted from a collaboration between that Group and the Oxford MRS, who also model in 00. The BC3 therefore now replaces "the BloNg", with which it is electrically compatible.
 [[:glossary:blong|Main article]]\\
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-    * Unordered List ItemBuffers are allocated by various processes to use as input queues, etc. Most of the time, buffers are some processes output, and they are file buffers. A simplistic explanation of buffers is that they allow processes to temporarily store input in memory until the process can deal with it.
+    * Buffers are allocated by various processes to use as input queues, etc. Most of the time, buffers are some processes output, and they are file buffers. A simplistic explanation of buffers is that they allow processes to temporarily store input in memory until the process can deal with it.
-    * Unordered List ItemCache is typically frequently requested disk I/O. If multiple processes are accessing the same files, much of those files will be cached to improve performance (RAM being so much faster than hard drives), it's disk cache.
+    * Cache is typically frequently requested disk I/O. If multiple processes are accessing the same files, much of those files will be cached to improve performance (RAM being so much faster than hard drives), it's disk cache.
 In Hardware a buffer is a digital or analog stage used to isolate a signal source from the following circuit's loading. This might be the case in Digital where a single output is required to fan out to multiple inputs. In analog it is usually the means to connect a high impedance signal source to much lower impedance circuits, normally with unity gain.