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electrical:12v:alternator [2024/12/21 16:47]
frater_secessus [lithium-specific VSR] |
electrical:12v:alternator [2025/06/23 15:42] (current)
frater_secessus orton |
| * relays and DC-DC that are triggered solely by D+ can be disabled by a switch on the D+ wire. [[https://www.reddit.com/r/VanLife/comments/1c4vjl0/is_this_renogy_a_good_dcdc_option_for_a_200ah/kzuc78v/|Additional control could be introduced]] with a relay and or delay ([[https://amzn.to/3TUEbmu|example]]) | * relays and DC-DC that are triggered solely by D+ can be disabled by a switch on the D+ wire. [[https://www.reddit.com/r/VanLife/comments/1c4vjl0/is_this_renogy_a_good_dcdc_option_for_a_200ah/kzuc78v/|Additional control could be introduced]] with a relay and or delay ([[https://amzn.to/3TUEbmu|example]]) |
| * VSR triggered by voltage can can be disabled by a switch on the thin ground wire on the VSR itself.((the VSR requires a ground to make a complete circuit to run internal electronics. Breaking this circuit turns off the VSR)) | * VSR triggered by voltage can can be disabled by a switch on the thin ground wire on the VSR itself.((the VSR requires a ground to make a complete circuit to run internal electronics. Breaking this circuit turns off the VSR)) |
| * some DC-DC can be //derated//((output intentionally reduced)) by providing a 12v signal to the CURRENT LIMIT terminal ([[electrical:12v:b2b#renogy1|Renogy DC1212 series]], [[electrical:12v:b2b#leaptrend|Leaptrend]]) or through a setting in an app (Renogy DCC50S). | * some DC-DC can be //derated//((output intentionally reduced)) by providing a 12v signal to the CURRENT LIMIT terminal ([[electrical:12v:b2b#renogy1|Renogy DC1212 series]], [[electrical:12v:b2b#leaptrend|Leaptrend]]) or through a setting in an app (Renogy DCC50S), etc |
| * some DC-DC can be //disabled// by providing a 12v signal to a remote ON/OFF terminal ([[electrical:12v:b2b#victron|Victron Orion-TR]]), [[electrical:12v:b2b#disabling_the_kisae|Kisae]]. | * some DC-DC can be //disabled// by providing a 12v signal to a remote ON/OFF terminal ([[electrical:12v:b2b#victron|Victron Orion-TR]]), [[electrical:12v:b2b#disabling_the_kisae|Kisae]]. |
| * on units that have a dedicated NEG ("ground", negative return) to the starter battery there may be no easy disable method. The brute force method would be to insert a relay between the starter battery POS and the unit's POS input, and control the relay with a switch. | * on units that have a dedicated NEG ("ground", negative return) to the starter battery there may be no easy disable method. The brute force method would be to insert a relay between the starter battery POS and the unit's POS input, and control the relay with a switch. |
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| It's also possible to run a separate and (much) heavier & more expensive cable/connector from the TV to the trailer; this would minimize voltage sag. | It's also possible to run a separate and (much) heavier & more expensive cable/connector from the TV to the trailer; this would minimize voltage sag. |
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| ===== isolator without a house battery ===== | ===== isolator without a house battery ===== |
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| **Q.** An isolator is typically used to charge a house battery, so why install [[electrical:12v:alternator#combiners|a relay]] if you have no house battery? | **Q.** An "isolator" (combiner, relay, etc) is typically used to charge a house battery, so why install [[electrical:12v:alternator#combiners|a relay]] if you have no house battery? |
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| **A.** because an isolator can bring Big Current into the cabin for other uses, and do so //only when the engine is running//. Ciggy ports are typically limited to 10A (120-150w). | **A.** because it can bring Big Current into the cabin for other uses, and do so //only when the engine is running//. Ciggy ports are typically limited to 10A (120-150w). |
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| **Examples:**((while driving, not while idling)) | **Examples:**((while driving, not while idling)) |
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| | ===== the Orton method ===== |
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| | Similar to the above, [[https://www.ortontransit.info/electrical|the Orton method]] uses a combiner to control power to an inverter. The inverter in turn runs AC-DC battery chargers and other shore power loads. |
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| ===== tweaking the current ===== | ===== tweaking the current ===== |
