Electrical Efficiency #2
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I'm afraid I cannot give you exact numbers on efficiency, only on power draw and details on specific components. I don't have an electrical engineering background, so my knowledge on the topic is very limited. The reason that I picked a 2S (2 cell) setup is due to increased efficiency: most step up converters that I've used get hot, while my step down converters don't. My understanding is that this heat is lost energy and thus implies lower efficiency. That's also why I believe that the USB BMS efficiency isn't great. It gets hot while charging. It needs to step up However, when the device is powered on (and not charging), the battery voltage is stepped down to I'm not an electrical engineer, so the best I can do towards providing you real numbers is giving you some of the component datasheets. For the power switching, I'm using: Efficiency is always on the back of my mind though. Mainly due to heat generation, because heat escapes where lots of power is lost/converted. Heat requires cooling, and cooling is tricky. The tiny 2006 fan easily draws 0.3-0.6W all by itself. |
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Hello there !
I am dreaming of a PDA similar to yours.
Me thinks that 18650 batteries are the best choice for PDA in this time of being.
What is the total electrical efficiency of the intermediary circuit boards between the 18650 batteries and the Raspberry Pi board ?
Thank you.
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