Most of them kind of are powered by radio waves but they do not need that
much power as the whole thing is a close coupled system as indeed are the
cards that are contactless.
I'm sure we all remember Crystal sets which were powered by the signals they
received. I built a single transistor one using an old Germanium transistor
when I could see and that was even more efficient if you were in a high
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On Thursday, 22 August 2019 21:22:22 UTC+1, Rod Speed wrote:
Well there is with cat microchips so I assume the same with dogs.
Most implants contain three elements: a 'chip' or integrated circuit; a coil inductor, possibly with a ferrite core; and a capacitor.
Try powering one of these from an antennae and see how far you get
These are the normal ones like in credit cards, the sort I can
read/write using my phone. Not that you can write much to a credit card
chip as they have the security fuse blown and have an inbuilt CPU to
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