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Dave Plowman (News) Dave Plowman (News) is offline
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Default "Kinetic door bell"

In article ,
Jethro_uk wrote:
On Sun, 20 Dec 2020 17:37:18 +0000, Dave Plowman (News) wrote:


In article ,
Jethro_uk wrote:
On Sun, 20 Dec 2020 14:55:09 +0000, Dave Plowman (News) wrote:


In article ,
Harry Bloomfield wrote:
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Lots of these sort of things use 'tactile' switches. My car remote
control does. And they all seem relatively short lived.


If they are pizeo, surely there's quite a high voltage to be dealt with
?


Not quite sure why they'd be 'pizeo'?


*Shrug*


I saw an array of IoT crap at IBM a while back. "Kinetic" switches etc.
They were pizeo powered. Meaning you could stick them anywhere with no
need for wiring.


Ah - right. Didn't think of that. But wouldn't the push button move the
crystal mechanically to generate the power rather than being a switch?

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