Felix wrote: > I was curious about that and find some data on stackoverflow: > http://electronics.stackexchange.com/questions/37173/low-power-micro-sd-card-storage/123386#123386
Ah, nice ! Pity he didn't have a better meter that would let him monitor also the short peaks. > it seems that you would need a ยก50mf one! Yeah, I ended up with this sort of monsters, too :-) Now, there would be fairly small and not too expensive supercaps in that range. However, they have an even worse ESR (Equivalent Series Resistance) than the coin cell: about 15-20 Ohm for the cell, about 100 Ohm for a compact supercap, so they couldn't deliver nearly enough current. However, I also found supercaps with a low ESR. But they're quite large and pretty expensive. Here is a 50 mF model with a stunning 100 mOhm: http://www.digikey.com/product-detail/en/BZ013B503ZSB/478-3521-ND/1014116 That's when I decided that this is probably not where I'll find a solution ... - Werner _______________________________________________ Qi Hardware Discussion List Mail to list (members only): [email protected] Subscribe or Unsubscribe: http://lists.en.qi-hardware.com/mailman/listinfo/discussion
