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electrical:relay

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electrical:relay [2017/07/08 23:37]
frater_secessus [Relays] 		electrical:relay [2017/07/08 23:42]
frater_secessus [normally open vs normally closed]
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 The most common relay campers are exposed to is the solenoid for [[electrical:12v:alternator|charging house batteries from the coach's alternator]].  When the vehicle is turned on power activates the solenoid and connects the house and vehicle electrical systems. The most common relay campers are exposed to is the solenoid for [[electrical:12v:alternator|charging house batteries from the coach's alternator]].  When the vehicle is turned on power activates the solenoid and connects the house and vehicle electrical systems.
  
-Relays are also useful for powering loads from [[electrical:12v:lvd|LVD]] or [[electrical:solar:charge_controller|Charge Controller]] LOAD outputs.+Relays are also useful for powering loads from [[electrical:12v:lvd|LVD]] or [[electrical:solar:charge_controller|Charge Controller]] LOAD outputs.  This allows powering larger loads than the controller is rated for. 
  
 ===== normally open vs normally closed ===== ===== normally open vs normally closed =====
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 Relays come in two basic types:   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.
  
  
electrical/relay.txt · Last modified: 2020/10/11 19:48 (external edit)

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