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--- electrical:relay [2017/07/08 23:35]
frater_secessus
+++ electrical:relay [2017/07/08 23:37]
frater_secessus [Relays]
@@ Line 1: / Line 1: @@
 ====== Relays ======
-Electrical relays are devices used to **turn relatively heavy loads on/off**.  They are triggered by small amounts of power from an external source (usually a switch operated by the user) but can pass larger amounts of power to the load.
+Electrical relays are devices used to **turn relatively heavy loads on/off**.  They are //triggered by small amounts of power// from an external source (usually a switch operated by the user) but //can pass larger amounts of power// to the load.  This reduces the cost and physical requirements of the switch and can help automate some processes.
 A typical setup looks like this:  switch (and house power) --> relay --> load

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