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electrical:12v:alternator

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electrical:12v:alternator [2018/12/28 06:10]
frater_secessus [isolators]
electrical:12v:alternator [2018/12/28 07:35] (current)
frater_secessus [isolators]
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     - [[http://​amzn.to/​2h2tDxp|single voltage sensing]] - this type reads the voltage of only one battery. ​ In the case of an RV it would read the voltage of the starting battery. ​ When it is high enough (ie, charged or being charged by alternator) it connects the starting and house batteries. ​  ​Example:​ [[http://​amzn.to/​2h2tDxp|Sure Power 1314]]. ​ [secessus says: "IMO the practical benefit (if any) to charging the starter battery "​first"​ is keeping the load on the alternator reasonable."​]     - [[http://​amzn.to/​2h2tDxp|single voltage sensing]] - this type reads the voltage of only one battery. ​ In the case of an RV it would read the voltage of the starting battery. ​ When it is high enough (ie, charged or being charged by alternator) it connects the starting and house batteries. ​  ​Example:​ [[http://​amzn.to/​2h2tDxp|Sure Power 1314]]. ​ [secessus says: "IMO the practical benefit (if any) to charging the starter battery "​first"​ is keeping the load on the alternator reasonable."​]
     - [[http://​amzn.to/​2gVmLFU|dual voltage sensing]] - this type reads the voltage from both batteries and when either is high enough it connects the batteries. ​  This may or may not be what an RVer wants, as it could consume some solar power to to engergize the solenoid and charge the starter battery. It would also backfeed excessive [[electrical:​12v:​charging|equalization]] voltages to the coach system. Example: [[http://​amzn.to/​2gVmLFU|Sure Power 1315]]     - [[http://​amzn.to/​2gVmLFU|dual voltage sensing]] - this type reads the voltage from both batteries and when either is high enough it connects the batteries. ​  This may or may not be what an RVer wants, as it could consume some solar power to to engergize the solenoid and charge the starter battery. It would also backfeed excessive [[electrical:​12v:​charging|equalization]] voltages to the coach system. Example: [[http://​amzn.to/​2gVmLFU|Sure Power 1315]]
-  - DC-DC isolators (aka //b2b isolators//​) that boost charging voltage to [[electrical:​12v:​charging|Absorption]] voltages+  - DC-DC isolators (aka //[[electrical:​12v:​b2b|b2b]] ​isolators//​) that boost charging voltage to [[electrical:​12v:​charging|Absorption]] voltages
   - [[http://​amzn.to/​2gVwmKw|solid state isolator]] -  an electronic device which uses diodes to prevent depletion of the starter battery. ​ **Isolators are generally brick-shaped**. ​ Diode-based isolators have a **0.5v - 1v drop** between the alternator and house battery. This may be desirable if the house battery is a lower-voltage chemistry like [[electrical:​12v:​lifepo4_batteries_thread|LiFePO4]]. ​ Some solid state isolaters use FETs and diodes in tandem to reduce voltage drop. \\ Note:  solid state relays can't combine batteries for self-jumpstarting.   - [[http://​amzn.to/​2gVwmKw|solid state isolator]] -  an electronic device which uses diodes to prevent depletion of the starter battery. ​ **Isolators are generally brick-shaped**. ​ Diode-based isolators have a **0.5v - 1v drop** between the alternator and house battery. This may be desirable if the house battery is a lower-voltage chemistry like [[electrical:​12v:​lifepo4_batteries_thread|LiFePO4]]. ​ Some solid state isolaters use FETs and diodes in tandem to reduce voltage drop. \\ Note:  solid state relays can't combine batteries for self-jumpstarting.
   - manual switch - A [[http://​amzn.to/​2gsDtNc|manual battery switch]] normally has 4 positions: A, B, A+B, and Off. A would be for the starter battery and used during starting. B would be used for house use when one is not driving. A+B could be used to combine both sets for starting or for charging while driving. This kind of setup is prone to user error. A manual switch has no current or voltage losses.   - manual switch - A [[http://​amzn.to/​2gsDtNc|manual battery switch]] normally has 4 positions: A, B, A+B, and Off. A would be for the starter battery and used during starting. B would be used for house use when one is not driving. A+B could be used to combine both sets for starting or for charging while driving. This kind of setup is prone to user error. A manual switch has no current or voltage losses.
electrical/12v/alternator.txt ยท Last modified: 2018/12/28 07:35 by frater_secessus