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electrical:inverter [2016/11/20 11:32] frater_secessus [understanding the specs] |
electrical:inverter [2019/03/13 15:35] frater_secessus [sharing power] |
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+ | [[lifestyle: | ||
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+ | [[lifestyle: | ||
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Inverters take 12v DC and turn it into 110v AC. For shore power charging see [[electrical: | Inverters take 12v DC and turn it into 110v AC. For shore power charging see [[electrical: | ||
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+ | It is **more efficient to use DC power directly** whenever possible. In particular it is more efficient than running a laptop of phone charger off an inverter.((http:// | ||
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+ | AC-only items will require an inverter. | ||
====== Modified Sine Wave ====== | ====== Modified Sine Wave ====== | ||
- | Originally called " | + | Originally called " |
Pro: | Pro: | ||
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* can cause motorized items to run warmer | * can cause motorized items to run warmer | ||
* can cause some electronics to malfunction | * can cause some electronics to malfunction | ||
- | * there is anecdotal evidence that MSW can damage some electronics. | + | * some reports of damage to electronics; |
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+ | ===== MSW and electronics ===== | ||
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+ | there is anecdotal evidence that MSW can damage some electronics. | ||
====== Pure Sine Wave ====== | ====== Pure Sine Wave ====== | ||
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Note that motorized equipment like the drill likely have **different current requirements for startup and for running**. | Note that motorized equipment like the drill likely have **different current requirements for startup and for running**. | ||
- | The best way to understand how much your 110v equipment needs during startup/ | + | The best way to understand how much your 110v equipment needs during startup/ |
===== understanding the specs ===== | ===== understanding the specs ===== | ||
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+ | ====== sharing power ====== | ||
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+ | Because higher voltage power has less losses over long wires, it may be most efficient to share power between RVs as 120v. The donor vehicle would invert to 120v, plug in an extension cord to their inverter and run it to the recipient. | ||
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+ | ====== differences from shore power 12vac ====== | ||
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+ | Inverters make 120vac in different way than [[electrical: | ||
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+ | > ... inverter outputs are usually two 60 VAC lines driven 180 degrees out of phase, so that there is a net 120 VAC potential across them.((http:// | ||
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+ | > | ||
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+ | > The situation gets more complicated when there' | ||
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+ | > You can see that the neutral and ground wires [in shore power] are tied together at the panel. | ||
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+ | > In fact, the situation with an inverter is very similar to the 240 VAC circuit shown in that drawing, which has 2 120 VAC lines driven 180 degrees out of phase, i.e., " | ||