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electrical:inverter

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electrical:inverter [2023/09/25 19:58]
frater_secessus [inverter chargers] 		electrical:inverter [2024/04/05 12:23]
frater_secessus [Sizing your inverter]
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 AC-only items will require an inverter.  [[electrical:12v:wallwart|Devices that run off a "wall wart" adapter]] almost never require an inverter.   AC-only items will require an inverter.  [[electrical:12v:wallwart|Devices that run off a "wall wart" adapter]] almost never require an inverter.  
 +
 +===== efficiency =====
 +
 +Inverting from DC to your local shore power spec will necessarily incur losses.  These might be 10-30%, depending on the inverter, the inverter's efficiency spec, etc.  In the absence of hard information you might use 20% losses as a rule of thumb.  This means it will require 20% more power to run your load than the rating spec.
 +
 +50w * 0.8 efficiency = 60w demanded from the system
  
  
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   * In [[https://www.youtube.com/watch?v=wimTJw_Gpgk|an apples-to-apples comparison]] knurlgnar24 found a microwave to run 10% less efficiently and at 20% less power on MSW.   * In [[https://www.youtube.com/watch?v=wimTJw_Gpgk|an apples-to-apples comparison]] knurlgnar24 found a microwave to run 10% less efficiently and at 20% less power on MSW.
  
 +Also see [[https://www.reddit.com/r/diySolar/comments/yyd20a/pure_sine_wave_inverters_what_is_real_and_what_is/ix136m7/|this technical post]] on the topic by therealtimewarren.
  
 ===== Pure Sine Wave ===== ===== Pure Sine Wave =====
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 Once you have made your MSW vs. PSW decision the next step is **sizing the inverter** (picking the right capacity). Once you have made your MSW vs. PSW decision the next step is **sizing the inverter** (picking the right capacity).
  
 +==== smallest uses ====
 +
 +For ~120w loads you can use a small inverter intended for the cigarette lighter port.  They are typically fused at 10A, hence the wattage limit (12v x 10A = 120w).  
  
 +If you go this route, consider using [[https://amzn.to/3UgnTWF|a soft wire extension]] so the inverter can rest on a flat surface.  That way it is not hanging out of and stressing the already-delicate ciggy port. 
 ==== estimating your needs ==== ==== estimating your needs ====
  
electrical/inverter.txt · Last modified: 2024/04/20 22:18 by frater_secessus

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