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glossary:glossary_p [2018/10/20 14:15] – [PEI] Bob Vetterlein | glossary:glossary_p [2020/01/27 11:56] – Bob Vetterlein |
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===== PCB ===== | ===== PCB ===== |
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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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**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]]. |
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| =====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 |
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===== PMP ===== | ===== PMP ===== |
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]].\\ |
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===== Pulse ===== | ===== Pulse ===== |