Changes between Version 9 and Version 10 of ControlSystems/Electrical/Training/Arduino/Lesson2

Timestamp:

Sep 27, 2015, 3:20:15 PM (10 years ago)

Author:

David Albert

Comment:

--

ControlSystems/Electrical/Training/Arduino/Lesson2

@@ -11 +11 @@
 * Electricity
    * [https://learn.sparkfun.com/tutorials/what-is-electricity What is electricity]
-   * Units of measure: Volts, Amperes, Watts, Joules, Ah, KWh
    * The [http://hyperphysics.phy-astr.gsu.edu/hbase/electric/watcir.html water analogy]
+   * Units of measure: 
+       * Volts - the pressure behind the electrons (potential energy)
+       * Amperes - the number of electrons flowing 
+       * Watts = Volts x Amperes - a measure of the actual work being done
+       * Joules = A measure of energy = Watts-per-second
+       * KWh = Kilowatt-Hours (another measure of energy) = Watts-per-hour/1000
    * Who's who (literally): [https://en.wikipedia.org/wiki/Alessandro_Volta Volta], [https://en.wikipedia.org/wiki/Andr%C3%A9-Marie_Amp%C3%A8re Ampere], [https://en.wikipedia.org/wiki/James_Watt Watt], [https://en.wikipedia.org/wiki/James_Prescott_Joule Joule], [https://en.wikipedia.org/wiki/Georg_Ohm Ohm]
 * Batteries
-   * What is a battery
+   * [http://engineering.mit.edu/ask/how-does-battery-work What is a battery]
    * [http://mechanicalmania.blogspot.com/2011/07/types-of-battery.html Primary vs. secondary]
        * FIRST bots use sealed [https://en.wikipedia.org/wiki/Lead%E2%80%93acid_battery lead-acid] batteries (1800s technology!)
        * Mini-bots use primary alkaline batteries (developed 1899-1901)
+       * [https://www.youtube.com/watch?v=7-xPHopebiE Why we aren't using lithium batteries]
    * Voltage:
        * Nominal voltage (alkaline=1v5/cell, SLA=2v15/cell)