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glossary:glossary_l [2014/11/11 13:29]
127.0.0.1 external edit
glossary:glossary_l [2019/10/20 12:29] (current)
tom_shenton [LED] the picture is incorrect, because the longest leg is conventionally the positive leg
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-A pulse method ​to change the state from on to off or vice versa. ​    ​\\ ​[[http://www.heathcote-electronics.co.uk/RelayBrd.htm|http://www.heathcote-electronics.co.uk/RelayBrd.htm]]  \\  +Latching can apply to both mechanical devices and electronic circuits. 
-[[http://​www.4qdtec.com/trd.html|http://www.4qdtec.com/trd.html]] +An example of mechanical latching would be a push on / push off switch, ​[[https://en.wikipedia.org/wiki/​Latching_switch|see here.]] See also description of a [[https://en.wikipedia.org/wiki/​Relay#​Latching_relay|latching relay.]] (e.g. [[http://​www.digikey.ca/product-detail/​en/​EE2-5NU/​399-11056-5-ND/​4291122|relay]])\\ 
- +An example of an electronic latch would be [[https://en.wikipedia.org/wiki/​Flip-flop_(electronics)|a flip-flop]] or bistable circuit.\\ 
 +A standard relay may be made self latching by supplying a current path for the coil through one of its normally open contact sets. 
 +===== Layout Command Control ===== 
 +{{ :​lcb:​lcc.png?​100|}} 
 +[[:​lcb:​start&#​layout_command_control_lcc|Layout Command Control]] (LCC) s a system for controlling all the functions on your layout that don’t have to do with how fast the locomotive is moving -- things like signals, or sounds, or passenger car lighting. ​ LCC is NMRANet, just under a different name.  LCC is designed as a separate, generic control bus which is positioned to take the load off your throttle bus. It is a bi-directional data bus that can send and receive data.  Since it is an NMRA Standard, you are not confined to one manufacturer'​s products. Any manufacturer can make LCC compatible devices.  ​
 ===== Lead free ===== ===== Lead free =====
  
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 ===== LED ===== ===== LED =====
  
-Light Emitting Diodes (LEDs) emit light when an electric current passes through them+Light Emitting Diodes (LEDs) emit light when an electric current passes through them. The longest leg is the +ve leg which is also called the anode (not as in the picture)
  \\ {{:​glossary:​led-1.gif}}  \\ {{:​glossary:​led-1.gif}}
 \\Circuit symbol: \\Circuit symbol:
  \\ {{:​glossary:​led-2.gif}}  \\ {{:​glossary:​led-2.gif}}
-\\ [[http://​www.merg.org.uk/​merg_resources/​led.php]]  +\\ [[https://​www.merg.org.uk/​merg_resources/​led.php]]  
-\\ [[http://www.kpsec.freeuk.com/components/​led.htm|http://​www.kpsec.freeuk.com/components/​led.htm]]+\\ [[http://electronicsclub.info/leds.htm|http://​electronicsclub.info/leds.htm]]
  
 ===== LENZ ===== ===== LENZ =====
  
  
-A German dcc system and decoder manufacturer+A German ​[[glossary:​glossary_d#​dcc|DCC]] ​system and decoder manufacturer
 + 
 +=====LiFo===== 
 +__L__ast __i__n __F__irst __o__ut, data buffer where the most recent entry is the first to be retrieved. Commonly referred to as a '​Stack'​ it is used to save the return address (Program Counter) and other data that must be restored when a Sub Routine terminates. ​
  
  
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-A DCC decoder made especially for lights for a loco or carriages.+[[glossary:​glossary_d#​dcc|DCC]] decoder made especially for lights for a loco or carriages.
  
  
glossary/glossary_l.1415712585.txt.gz · Last modified: 2015/07/03 07:19 (external edit)