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electrical:12v:diysmartpass [2023/06/23 15:13] frater_secessus [20A combo DC-DC + isolator: $172] |
electrical:12v:diysmartpass [2023/06/23 15:17] frater_secessus [20A DC-DC + 20A solar controller + isolator: $191-$252] |
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>> There are no solutions. There are only trade-offs. ― Thomas Sowell | >> There are no solutions. There are only trade-offs. ― Thomas Sowell | ||
- | ==== 20A combo DC-DC + isolator: $172 ==== | + | ==== 20A DC-DC + isolator: $172 ==== |
This is the simplest and cheapest option, but requires ingenuity to keep boosted voltage from leaking back to the chassis. | This is the simplest and cheapest option, but requires ingenuity to keep boosted voltage from leaking back to the chassis. | ||
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- | ==== 20A combo DC-DC + diode isolator: $173 ==== | + | ==== 20A DC-DC + diode isolator: $173 ==== |
This option is requires no HVD, but has two possible drawbacks: | This option is requires no HVD, but has two possible drawbacks: | ||
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- drop of ~0.5v. | - drop of ~0.5v. | ||
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- | ==== 20A combo DC-DC + MOSFET isolator: $224 ==== | + | ==== 20A DC-DC + MOSFET isolator: $224 ==== |
Same technology as the Smartpass. | Same technology as the Smartpass. | ||
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Similar to the diode isolator setup above, but with MOSFETS instead of diodes. | Similar to the diode isolator setup above, but with MOSFETS instead of diodes. | ||
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The main benefit of a separate MPPT is we get to normal PV input limits, 100v+. | The main benefit of a separate MPPT is we get to normal PV input limits, 100v+. | ||
- | * [[https:// | + | * MPPT |
- | * [[https:// | + | * [[https:// |
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