Differences

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--- glossary:glossary_a [2019/09/09 22:01] – [Address] Add some useful context to Address. tgerbic
+++ glossary:glossary_a [2021/09/22 09:51] – used the correct syntax for linking to Wikipedia (so the icon is correct) Wayne
@@ Line 59: / Line 59: @@
-===== Amps =====
+===== Amps or Ampere =====
-The unit of current. It is defined as the constant current which if maintained in two straight parallel conductors of infinite length, of negligible cross-section and placed one metre apart in vacuum, will produce between the conductors a force equal to 2×10-7newton per metre length.
+An ampere is a measure of current flow. It is roughly defined as 6.28 X 10^18 electrons passing a point in one second. From a formula perspective one amp equals one volt divided by one ohm. If you had a one volt battery connected across a one ohm resistor, you would expect to measure one amp of current flow around the circuit.  Current values are often shown in formulas and on datasheets with the letters “A”, mA or uA.  In formulas current is generally shown as the letter “I”. For example E = I x R.  The letter “I” would most often be a value in amps, milliamps or microamps.
+In the model railroad context, you would expect to see a DC supply or a DCC booster providing several amps of current to a track, and most other circuits  or LED signals using ones to hundreds of milliamps.
+In a home environment, you would expect to see outlets in the 13 amp to 20 amp range and mains breaker panels working in the 50 amp to 200 amp range.
@@ Line 85: / Line 90: @@
 American Standard Code for Information Interchange
 [[glossary:asciicode|Table of Codes]]\\
-[[http://en.wikipedia.org/wiki/ASCII|Wikipedia article]]
+[[wp>ASCII|ASCII]]
 ===== Aspect =====
@@ Line 99: / Line 104: @@
-An auto reverse module is used in DCC to prevent shorts in reversing loops and other situations where the polarity of two lines must be reversed for a train to run through. It works by reversing the polarity if a short is detected. If the short is eliminated then the new polarity is accepted and is kept. One auto reverse module can protect several track sections provided that only section break is being bridged by a loco at any one time.
+An auto reverse module is used in DCC to prevent shorts in reversing loops and other situations where the polarity of two lines must be reversed for a train to run through. It works by reversing the polarity if a short is detected. If the short is eliminated then the new polarity is accepted and is kept. One auto reverse module can protect several track sections provided that only one section break is being bridged by a loco at any one time.
+===== AVR =====
+AVR is the name of a microcontroller family used in many [[:other:arduino|Arduino]] boards.
+See [[wp>AVR_microcontrollers | AVR microcontrollers]].
 ===== AWG =====