Differences

This shows you the differences between two versions of the page.

--- electrical:relay [2017/07/08 23:39]
frater_secessus [Relays]
+++ electrical:relay [2017/07/08 23:42]
frater_secessus [normally open vs normally closed]
@@ Line 13: / Line 13: @@
 Relays come in two basic types:
-  - **Normally Open (NO)** - the output circuit is open/incomplete when the relay is resting.  No power flows.  The controlled device is **off**.  //This is usually the default.//
+  - **Normally Open (NO)** - the output circuit is open/incomplete when the relay is resting.  No power flows.  The controlled device is **off** until the relay is triggered.  //This is usually the default.//
-  - **Normally Closed (NC)** - the output circuit is closed/complete when the relay is resting.  Power flows.  The controlled device is **on**.
+  - **Normally Closed (NC)** - the output circuit is closed/complete when the relay is resting.  Power flows.  The controlled device is **on** until the relay is triggered.

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