• stoy@lemmy.zip
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        3 months ago

        It is interesting to see old tech having clever solutions for stuff like this, these days the answer is 98% of the time is to slap a CPU on it.

        It’s boring!

      • rain_enjoyer@sopuli.xyz
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        3 months ago

        ok fine i’d put there a current limiter which you can make with 2 transistors and a diode. no need for an entire microcontroller. it’s often included with batteries these days anyway

        • terranoid@lemmy.cafe
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          3 months ago

          I believe lithium ion batteries need custom chips just to charge and discharge smartly

          Shit, even connecting to modern USB c to negotiate voltage you need a controller

          • rain_enjoyer@sopuli.xyz
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            3 months ago

            i think you can get away with resistors when you can work with 5V, up to 1.5A. lithium batteries need current limiter in series with voltage limiter, and this alone can be made in a very simple way, unless you want to know when battery is charged, or if you want extra efficiency that smps gives you, but this only makes sense for larger batteries (phone-sized and up) or when you want to handle everything to charger and connect battery to charger directly. then i think you need controller

    • Tollana1234567@lemmy.today
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      3 months ago

      probably more expensive to make different mechanical components when a simple chip does it all for cheaper. how ev are cheaper than ice cars,