Comment on Coin-sized nuclear 3V battery with 50-year lifespan enters mass production

• dnick@sh.itjust.works ⁨20⁩ ⁨hours⁩ ago

  Did you typo or did he? .03 is significantly bigger than .004

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• libra00@lemmy.world ⁨20⁩ ⁨hours⁩ ago

  0.03 is 7.5x more than 0.004 tho?

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  • Blue_Morpho@lemmy.world ⁨20⁩ ⁨hours⁩ ago

    You are right! I didn’t count the 0’s!

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• sugar_in_your_tea@sh.itjust.works ⁨21⁩ ⁨hours⁩ ago

  That’s definitely in the ballpark though. Surely they could for 25% power draw to support a 50 year battery.

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• mesamunefire@lemmy.world ⁨21⁩ ⁨hours⁩ ago

  I wonder how much we really need for a clock (555 eq) to work?

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  • piecat@lemmy.world ⁨21⁩ ⁨hours⁩ ago

    www.ti.com/lit/gpn/LM555

    2mA minimum, and that’s just q current. It’s gonna be much higher when you’re actually using it for a clock.

    I’m sure the casio’s main power sink is the display. I bet the refresh rate could be reduced for better battery life.

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    • Tangent5280@lemmy.world ⁨20⁩ ⁨hours⁩ ago

      Isnt the refresh rate just 1 Hz?

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      • piecat@lemmy.world ⁨15⁩ ⁨hours⁩ ago

        Yep.

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  • cubism_pitta@lemmy.world ⁨21⁩ ⁨hours⁩ ago

    A lot more than that. 2ma

    Smaller packages may be more efficient.

    Analog circuits are weird though

    www.ti.com/lit/ds/symlink/ne555.pdf

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