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glossary:glossary_p [2018/01/24 11:34]
Bob Vetterlein [PSU]
glossary:glossary_p [2020/01/27 11:56] (current)
Bob Vetterlein
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 ===== PCB ===== ===== PCB =====
  
-Printed Circuit Board. Are usually made of [[http://​en.wikipedia.org/​wiki/​FR-4|Fibreglass]] or [[http://​en.wikipedia.org/​wiki/​FR-2|SRBP]] (Synthetic Resin Bonded Paper) with a copper laminate on one or both sides, forming the electrical circuit. A detailed Wikipedia article is available [[http://​en.wikipedia.org/​wiki/​Printed_circuit_board|here]]. Most MERG [[glossary_k#​kits|Kits]] contain a PCB, the majority of them are single sided through hole construction. As the electronics become more sophisticated so double sided and surface mount technologies are being introduced.+Printed Circuit Board. Are usually made of [[wp>FR-4|Fibreglass]] or [[wp>FR-2|SRBP]] (Synthetic Resin Bonded Paper) with a copper laminate on one or both sides, forming the electrical circuit. A detailed Wikipedia article is available [[wp>Printed_circuit_board|here]]. Most MERG [[glossary_k#​kits|Kits]] contain a PCB, the majority of them are single sided through hole construction. As the electronics become more sophisticated so double sided and surface mount technologies are being introduced.
  
  
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 The PECO implementation of the Point motor, notable because they are constructed so as to be directly attached to both N and 00 gauge PECO track, thus making it easier to line up the pull and throw of the point The PECO implementation of the Point motor, notable because they are constructed so as to be directly attached to both N and 00 gauge PECO track, thus making it easier to line up the pull and throw of the point
 +
 +===== PEI =====
 +
 +[[wp>​Polyetherimide|Polyetherimide]]\\ ​
 +Used for the printable surface on some 3D printers, especially the Prusa range
  
  
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 A brand of micro processor chip from Microchip, often used in MERG projects. Eg  PIC18F2480. A brand of micro processor chip from Microchip, often used in MERG projects. Eg  PIC18F2480.
 ===== PICKit ===== ===== PICKit =====
-A device marketed by [[http://​www.microchip.com/​Developmenttools/​ProductDetails.aspx?​PartNO=PG164130|Microchip]] for programming their PIC microcontrollers. Beware of imitations.+A device marketed by [[http://​www.microchip.com/​Developmenttools/​ProductDetails.aspx?​PartNO=PG164130|Microchip]] for programming their PIC microcontrollers. Beware of imitations.\\ \\  
 +The pin out of the PICKit differs from that of the programming connector on MERG CBUS boards, see **[[helpsystem:​pickit2cbus|here]]** for details of how to build a connecting lead. A useful pdf is available from the [[http://​picprojects.org/​projects/​ICSP/​icsp-info.pdf|Picprijects website]], detailing the pin out of various PIC packages.
 ===== PiSo ===== ===== PiSo =====
 **P**arallel **i**n **S**erial **o**ut, refers to a type of [[glossary_s#​shift_register|Shift Register]] where data present on a set of input pins is captured by application of a strobe pulse and then presented on a single output pin under control of a [[glossary_c#​clock|clock]]. For a graphic description see [[glossary:​shiftinout|Shift in/out]]. **P**arallel **i**n **S**erial **o**ut, refers to a type of [[glossary_s#​shift_register|Shift Register]] where data present on a set of input pins is captured by application of a strobe pulse and then presented on a single output pin under control of a [[glossary_c#​clock|clock]]. For a graphic description see [[glossary:​shiftinout|Shift in/out]].
  
 +=====PLA=====
 +[[wp>​Polylactic_acid|Polylactic Acid]] a plastic used in 3D printing\\ ​
 +[[wp>​Programmable_logic_array|Programmable Logic Array]] a kind of programmable logic device used to implement combinational logic circuits.
 ===== PM - Phase Modulation ===== ===== PM - Phase Modulation =====
  
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-Solenoid Point motor /relay driver with onboard ​relay see TBG16/26+Solenoid Point motor /relay driver with on board relay see TBG16/26
  
 ===== PMP ===== ===== PMP =====
  
-Pocket Money Project. Excellent simple, basic and inexpensive kits to learn basic electronic theory and techniques such as soldering. Currently there are 17 Kits and none cost more than £2.15. You can find them in the Kit Locker [[http://​www.merg.org.uk/​merg_kitlocker/​section.php?​id=31|here]].+Pocket Money Project. Excellent simple, basic and inexpensive kits to learn basic electronic theory and techniques such as soldering. Currently there are 23 Kits and most cost less than £2.00. You can find them in the Kit Locker [[https://​www.merg.org.uk/​merg_kitlocker/​section.php?​id=31|here]].
 ===== PNP ===== ===== PNP =====
  
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 Multiplex system using a RS485 bus, matching pairs of input and output modules communicate under the control of a master module.\\ ​ Multiplex system using a RS485 bus, matching pairs of input and output modules communicate under the control of a master module.\\ ​
 For details see these TBs: For details see these TBs:
-[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1054&​userid=62|LC02/01]],  +[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1054|LC02/​01]],​  
-[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1055&​userid=62|LC02/02]],  +[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1055|LC02/​02]],​  
-[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1056&​userid=62|LC02/03]],  +[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1056|LC02/​03]],​  
-[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1066&​userid=62|LC02/04]] &  +[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1066|LC02/​04]] &  
-[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1067&​userid=62|LC02/​05]].\\ ​+[[http://​www.merg.org.uk/​merg_tbs/​download.php?​fileid=1067|LC02/​05]].\\ ​
  
 ===== Pulse ===== ===== Pulse =====
glossary/glossary_p.1516793640.txt.gz · Last modified: 2018/01/24 11:34 by Bob Vetterlein