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B_r_a_d
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Would this make it truly zero power?
B_r_a_d   1/6/2017 6:20:08 AM
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Great idea. Hope you're successful. Could it be made to be truly zero power using the UB20M chip shown here? http://www.bristol.ac.uk/engineering/research/em/research/zero-standby-power/

They have two demo videos at https://www.youtube.com/channel/UCvh4MNL1kIq-tqw_YQSJWGg

Don Herres
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think of crystal radios
Don Herres   6/22/2016 2:44:40 PM
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Remembering the crystal radio I built as a kid, this seems to be a novel approach using a new technology that has only been around for a bit over a century (not me, just the radios).  They really use no external current source other than the radio waves.

junko.yoshida
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Re: 3uA is low, but not "zero power"
junko.yoshida   6/22/2016 12:18:58 PM
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@amfitzgerald, thanks for the clarification.

Understood. Your points well taken.

amfitzgerald
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3uA is low, but not "zero power"
amfitzgerald   6/22/2016 12:12:57 PM
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Hi Junko,

The academic research I presented and remarked upon at the 2015 MSIG MEMS Executive Congress consumes zero power in standby. As in really zero. The Vesper product you feature here is *not* zero power in listen mode - it is ultra low power.

A 3uA quiescent current will still eventually drain a battery. A true zero power device will never do so. That's the significant difference.

While a 3uA quiescent current may be news for MEMS microphones, it is old news for MEMS accelerometers, which have had a low power standby-mode feature for some time. Check out the ST LIS3DH 3-axis accel. Its ultra low power standby mode consumes only 2uA.

 

 



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