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--- glossary:glossary_o [2013/05/11 18:18] – [Octal Darlington Arrays] Bob Vetterlein
+++ glossary:glossary_o [2021/08/08 05:20] (current) – Moved the entry to OP to make it alphabetical Wayne
@@ Line 7: / Line 7: @@
-Circuit diagram of Darlington configuration \\ {{:glossary:2803-schematic.png?nolink& |}} {{ :glossary:2803-package.png?nolink&200|}} In electronics, the Darlington transistor is a semiconductor device which combines two bipolar transistors in tandem (often called a "Darlington pair") in a single device so that the current amplified by the first is amplified further by the second transistor. This gives it high current gain (written β or hFE), and takes up less space than using two discrete transistors in the same configuration. The use of two separate transistors in an actual circuit is still very common, even though integrated packaged devices are available.\\ \\ \\ \\ \\ \\ \\ \\ \\ ULN2803 package used as the output stage of several MERG Kits. \\ \\ \\
+Circuit diagram of Darlington configuration \\ {{:glossary:2803-schematic.png?nolink& |}} {{ :glossary:2803-package.png?nolink&200|}} In electronics, the Darlington transistor is a semiconductor device which combines two bipolar transistors in tandem (often called a "Darlington pair") in a single device so that the current amplified by the first is amplified further by the second transistor. This gives it high current gain (written β or hFE), and takes up less space than using two discrete transistors in the same configuration. The use of two separate transistors in an actual circuit is still very common, even though integrated packaged devices are available.\\ \\ \\ \\ \\ \\ \\ \\ \\ **[[kits:88:outputdrive|ULN2803]]** package used as the output stage of several MERG Kits. \\ \\ \\
+For new designs the {{ :glossary:tbd62083apg_datasheet_en_20160511-769640.pdf |TBD62083}} is recommended, this uses [[:glossary:glossary_f#FET|FET]]- Field Effect Transistor technology.\\
+{{:glossary:tbd62083-pinout.png?direct&400|}}{{:glossary:tbd62083-circuit.png?direct&400|}}
 ===== Ohms =====
 Definition: >An ohm (SI symbol Ω but commonly is R) is a resistance that produces a potential difference of one Volt when a current of one Ampere is flowing through it. 10 Ω resistor can be represented as 10R. Ohms law formula: voltage (V) = amps (I) x resistance (R) or V=I.R or I=V/R or R=V/I
+===== OP =====
+Context sensitive:
+OP - Original Poster - The person starting a topic, thread or discussion.\\
+OP - Original Post - The first post in a topic, thread or discussion.\\
+OP - Original Post - The first post made by a particular person in a topic, thread or discussion.\\
 ===== Op amp =====
@@ Line 24: / Line 32: @@
-Open-collector configuration In an integrated circuit, an output scheme utilizing no internal pull-up resistor. Wired-OR outputs can thus have opposite states without risk of damage to the device.
+Open-collector configuration In an integrated circuit, an output scheme utilizing no internal pull-up resistor. Wired-OR outputs can thus have opposite states without risk of damage to the device.\\
+An example of this type of device can be seen above under [[glossary_o#octal_darlington_arrays|Octal Darlington Arrays]]
 ===== OpenLCB =====
+{{ :lcb:logo-ajs-dph.png?100|}}
-Refers to the Open Layout Control Bus, a publicly developed MRR accessory [[glossary_b#bus|bus]] which is designed to work along side a traction bus, such as [[glossary_d#DC Control|DC]] or [[glossary_d#DCC Digital Command Control|DCC]].  It uses a variety of physical buses, including CAN, Ethernet and Wifi.  It is the basis for [[glossary_n#NMRAnet|NMRAnet]].  See: [[http://openlcb.org|OpenLCB website]].
+Refers to the [[https://merg.org.uk/merg_wiki/doku.php?id=lcb:start&#openlcb|Open Layout Control Bus]], a publicly developed MRR accessory [[glossary_b#bus|bus]] which is designed to work along side a traction bus, such as [[glossary_d#DC Control|DC]] or [[glossary_d#DCC Digital Command Control|DCC]].  It uses a variety of physical buses, including CAN, Ethernet and Wifi.  It is the basis for [[glossary_l#Layout Command Control|Layout Command Control™]].  See: [[http://openlcb.org|OpenLCB website]].
 ===== Optical detector =====
@@ Line 42: / Line 51: @@
 ===== OR =====
 OR [[logicgates#or|Logic Gate]]\\
 ===== Oscillation =====