electrical:12v:diysmartpass
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electrical:12v:diysmartpass [2022/09/10 13:26] frater_secessus [how it works] |
electrical:12v:diysmartpass [2023/06/23 15:13] frater_secessus [20A combo DC-DC + isolator: $172] |
This is the simplest and cheapest option, but requires ingenuity to keep boosted voltage from leaking back to the chassis. In this case the isolator (solenoid) is turned off by the HVD at Vfloat (conservative) or just below alternator voltage (power-maximizing). | This is the simplest and cheapest option, but requires ingenuity to keep boosted voltage from leaking back to the chassis. In this case the isolator (solenoid) is turned off by the HVD at Vfloat (conservative) or just below alternator voltage (power-maximizing). |
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* [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. [[https://amzn.to/3QGwihC|Cole-Hersee continuous duty solenoid]], $55. [[https://amzn.to/3AhdNti|High voltage disconnect]], $13. | * [[https://amzn.to/3pCW5eY|Renogy 20A DC-DC]], $104. |
| * [[https://amzn.to/3QGwihC|Cole-Hersee continuous duty solenoid]], $55. |
| * [[https://amzn.to/3AhdNti|High voltage disconnect]], $13. |
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The HVD mentioned here is actually LVD/HVD. You can use it to make the isolator a [[electrical:12v:alternator#voltage-sensing_relays|VSR]], turning on at 13.2v (engine running) and turning off at just under alternator voltage, if Valt > Vfloat.((and it probably is)) Alternatively, the HVD might turn off >Vfloat. | The HVD mentioned here is actually LVD/HVD. You can use it to make the isolator a [[electrical:12v:alternator#voltage-sensing_relays|VSR]], turning on at 13.2v (engine running) and turning off at just under alternator voltage, if Valt > Vfloat.((and it probably is)) Alternatively, the HVD might turn off >Vfloat. |
electrical/12v/diysmartpass.txt · Last modified: 2024/03/20 16:06 by frater_secessus