@cm0002@lemmy.world to Technology@lemmy.worldEnglish • 4 months agoCoin-sized nuclear 3V battery with 50-year lifespan enters mass productionwww.techspot.commessage-square47fedilinkarrow-up11arrow-down10cross-posted to: technology@lemmy.ml
arrow-up11arrow-down1external-linkCoin-sized nuclear 3V battery with 50-year lifespan enters mass productionwww.techspot.com@cm0002@lemmy.world to Technology@lemmy.worldEnglish • 4 months agomessage-square47fedilinkcross-posted to: technology@lemmy.ml
minus-square@Blue_Morpho@lemmy.worldlinkfedilinkEnglish0•4 months agoGoogle says a Casio watch needs .004mA so not quite enough.
minus-square@mesamunefire@lemmy.worldlinkfedilinkEnglish0•4 months agoI wonder how much we really need for a clock (555 eq) to work?
minus-square@piecat@lemmy.worldlinkfedilinkEnglish0•4 months agohttps://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.
minus-square@Tangent5280@lemmy.worldlinkfedilinkEnglish0•4 months agoIsnt the refresh rate just 1 Hz?
minus-square@dnick@sh.itjust.workslinkfedilinkEnglish0•4 months agoDid you typo or did he? .03 is significantly bigger than .004
minus-square@sugar_in_your_tea@sh.itjust.workslinkfedilinkEnglish0•edit-24 months agoThat’s definitely in the ballpark though. Surely they could cut 25% power draw to support a 50 year battery.
minus-square@Blue_Morpho@lemmy.worldlinkfedilinkEnglish0•4 months agoYou are right! I didn’t count the 0’s!
Google says a Casio watch needs .004mA so not quite enough.
I wonder how much we really need for a clock (555 eq) to work?
https://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.
Isnt the refresh rate just 1 Hz?
Yep.
Did you typo or did he? .03 is significantly bigger than .004
That’s definitely in the ballpark though. Surely they could cut 25% power draw to support a 50 year battery.
0.03 is 7.5x more than 0.004 tho?
You are right! I didn’t count the 0’s!